Om648 boost pressure. Have googled for this info all day long but no dice.

Om648 boost pressure youtube. Boost Pressure and Actuator Behaviour: 2. This is electronically controlled unlike the predecessor model. 2L DIESEL ENGINE MAP MANIFOLD PRESSURE SENSOR. 65bar Map sensor so no 3000mbar pressure is possible. jpg. And it fooked me all week. I read a bit on your fueling thread and wish I could speak intelligently about the OM648 fueling profiles - I will offer a parallel from the 7. When revved the intake (one near maf) drops When OM648 smokes alot - intake pressure test is needed, this time it was obvious - holes in intercooler. This variability suggests that the actuator may not consistently achieve the desired boost pressure set by Our W211 320CDi has now dropped into a permanent state of low boost and hence low power with reduced rpm available. Has been tested with extreme boost pressures. J. Turbo; HP pump coupling (essential) 400 CDI HP pump (Up to 450hp) Billet rail pump gear (500hp) OM648 Race piston; om648 H-Profile connection rod (Recommended) ARP Bolts for connection can someone please point out where the boost pressure sensor is and advise me on how to replace a faulty one in lay terms? Attached are some poor quality pictures (apologies) Regards Ali . Joined Nov 13, 2020 Messages 4 - Test B5/1 boost pressure sensor as per guided test in DAS for proper operation and plausibility A6480960299 Turbocharger 1 OM648, EU3 Diagnostics Engineer40022. I just got back the car from service, the boost pressure sensor has been replaced, but still lost power sometimes. Weird that it sounds and loook to be hunting. This is an area where an electronic injection pump (EDC) excels. 5 Plus boost temp. And the bigger intercooler does as well not create more air, therefore you need to increase boost pressure and this will lead to much higher turbo rpm. The rev reaches only 3000rpm. 2-liter 6-cylinder in-line engine was manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the previous Mercedes-Benz OM612 inline-5 and OM613 inline-6 cylinder 67 likes, 1 comments - mattdobbsmedia on January 24, 2025: " for the antilag sounds #blacksmokeracing #drifting #driftmastersgp #driftmasters #benz #mercedes #holset #turbo #om648 #boost". 9 KB · OM648 220-270hp Tuning Guide Level: Easy, no modification or difficult work. Interesting, it used to cut boost and the boost came back after restart. What I'm unsure of though is star gives a read out of atmospheric, air intake and boost pressure yet I can only find two pressure sensors. I had neglected to properly I've just been through the exact same headache with the symptoms you describe on my W211 OM648 engine - it turned out to be a blocked exhaust after the cat which was preventing the turbo from spooling correctly. If your car is equipped with a boost pressure gauge, you can also see if the boost pressure has increased or decreased. Anyway plugged in Star and the codes stored are below: - 2510-001 Check component Y100/1 (Right charge pressure positioner) Positioner signals fault. . Bigger intercooler 3 inch exhaust CP3L110 pump off an OM628 • Boost pressure • Pilot injection Smooth Running Engine Maintain smooth running engine at idle • N3/9 receives engine speed signal (OM647/OM648) engines are supposed to sound like, that's half of the reason I wanted a Sprinter. One next to the maf and one on the pipe bolted to the intake manifold. One upgrade that can be worth the money to do is the high pressure pump coupling kit, but it should not be needed below 300hp. I haven't yet torn back into the engine, but I have swapped many parts: HPFP, the van has 5x brand new OEM part numbers A6480960299 A6480960099 A648096029980 Fits to the following models Mercedes Benz E-Class 320 CDI (W211) Engine: OM648 Displacement: 3222 cc Power: 150 Kw Year of construction: Jan 2003 to Dec 2006 Mercedes Benz S-Class 320 CDI (W220) Engine: OM648 Displacement: 3222 cc Power: 150 Kw Year of construct Fellas, I recently hooked upo a ScanGageII to my car, and have been monitoring boost pressures vs engine loading. duration) peaks at +35% increase on high load (+47% at the most on lower rail pressure The OM648 is an amazing engine and quite a jump up from the OM606 Mechanical setup. The boost pressure sensors are most commonly used on om648 low rail pressure errors - SOLVED! Jump to Latest 21 - 40 of 96 Posts. Danspain New Member. Besides I'm not interested in building the car up for 350 hp. Apart from this you shouldn’t need any mechanical changes up to 270hp. Can be done OM648, OM647, OM613, OM612, Hybrids with same spec. (Stored) - 2632-008 Check system ‘charge pressure control’ Charge pressure is Intake manifold for om648/om613. particularly the O2 sensor voltage on the OM648 cars. Of course your engine needs to be working properly to begin with Ths strange thing is the boost pressure sensor reading going all the way down to -0. IMG_0090. I understand the important thing is the relationship between drive pressure and boost pressure but I only know boost pressure. 137 posts · Joined 2013 Add to quote; Only show this user #1 · Feb 23, 2014. You need a map Plugging it into star reported faulty EGR and turbo boost pressure low. Forums Too low boost pressure") and because I had removed the air filter box/heat shield and replaced with a cone filter to look at the operation of the vane position actuator on the turbine a code for the MAF (SDS code 2011-001 Check component B2/5 (hot film mass air flow sensor). Share: The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance from 2003 on. Nov 16, 2020 #12 D. The stock high pressure pump will word up to 350hp and the 400cdi up to 450hp. The boost pressure controlis achieved by adjusting the vanes. Nor'Easter said: Not really. 1 4 of 5 Go to page. 5 at the June 2017 Gatebil Mantorp Park. 4227631134 Any advice welcomed. ENGINE: 3. 90x. I have another video of it running and the flaps going through full range of motion. DieselBound · Registered (2) 2005 E320 CDI Our OM648 320cdi engine is controlled by Bosch EDC16 engine control unit (ECU). E270 Owner MB Enthusiast. Registered User : Join Date: Jul 2004. Flow optimized with simulation software. The manifold has welded rods in middle to strenghten it and avoid deformation. Go. I have scanned it with my iCarsoft MB 2. I tried most everything I could think of to trick it, such as moving the target dome high, low at the time of the spike, and even went to timing when the spike hits and trying to compensate after it. Testing the actuation of the vanes showed no change in boost pressure. 5. This compressor forces air into the engine’s intake manifold, increasing the intake air pressure and therefore air density – whenever we have pressure in the intake manifold that is greater than the pressure in the atmosphere we call that boost. air filter, turbo, intake, egr, exhaust 2003 CHEVY CC D/A 4x4 SB ,AFE magnum flow stage 2 cold air intake w/ pre-filter, PPE boost valve, 4" catback magna flow exhaust, Sulastics, airbagged with firestone compressor and in-cab gauges, A pillar boost and EGT Autometer Z-Series, predator on 65, US Acoustic power, kicker components, kicker 10's behind the seat, 285/75/17's on Moto Metal 2007 Sprinter with Turbo Diesel Engine OM642 3. Europe has so many options that I may have to move! you just need to have tight control over fuelling in relation to turbo boost pressure. the quantity control valve (mounted with the pump) is known to play up, and might be at fault. I'll dig out the resistor I used before and see if it improves. 3L. Then we have the HP pump, which is unlikely to be at fault. 0 Liter V6 What is a Boost Pressure Sensor? A boost pressure sensor (BPS) uses to monitor the boost pressure within the intake manifold. Jump to Latest 11K views 13 replies 5 participants last post by 65aircooled Mar 14, 2015. If you do not know what pressure do on the combustion efficiency please look it up and there is some report 648 can give 300PS without touching or upgrading anything other than ECU. Variable Geometry Turbocharger (VGT): The OM648 features a variable geometry turbocharger, which optimizes boost pressure based on the engine’s RPM and load. Exhaust leaks or Boost leaks, you can usually hear a boost leak as a high pitched squeal under load. 0 kPa * The reason is the same as for lost boost- REDUCED AIR INTAKE. Pretty I think om648 with 100mm3 should get requested boost quite quickly even with lower gears. One major problem was that OM648 Fuel Knock. Production time 1 – 2 weeks. youcanic. Richteo. These are the most common oil leaks locations of the Symptoms Of A Bad Boost Pressure Sensor. raise the vnt map and check if there is any difference if it dosent work than you have to check boost pressure system. Dec 15, 2024. They require no machining to fit OM606 OM613 OM648 dual valve springs set - (6 cylinder) - NJ Performance quantity which allows safe lifting of the working rpm’s even over 6000 and as much boost pressure as you On full throttle application, boost will peak close to or above 20 PSI, but as RPMs increase, the boost levels slowly drop to about 15 PSI as RPM approaches redline. Went the diagnose the car and the following faults was Check component Charge pressure positioner. The OM606 dual valve springs set prevents valve float under high boost pressures due to springs greater stiffness (+40%) . Thanks. -Do not try this at home - Save Share Reply Quote Like. I understand the desire from the manufacturers (and from EPA and similar organizations) to retard the timing and throw more fuel in to keep most things consistent, but I'm curious as to how Bigger turbo spins up more slowly than smaller turbo inescapable physics. Current and stored So closed vanes = boosting and open vanes = no (or reduced) boost. 6bar pressure when it happens, so mu thought was it's cutting fuelling to match . Any help where the VNT maps are? Greetings, Jura! jursi Posts: 22 2020 10:56 pm . On your snapon machine check live data for boost pressure and check for excessive difference from specified boost and actual boost 010501 B5/1 (Boost Pressure Sensor) - The Signal Voltage Is Too High 010502 B5/1 (Boost Pressure Sensor) - The Signal Voltage Is Too Low / Charge Pressure Is Too Low 2003 E320CDI OM648 - Limp Mode - Turbo Actuator? Richteo; Nov 24, 2024; Engine; Replies 2 Views 483. DieselBound · Registered (2) 2005 E320 CDI Joined Mar 1, 2023 · 1,627 Posts Why is the Y74 at 29% when, clearly, there's a need to increase rail pressure? Perhaps this is a normal requested percentage and the Y74 was sticking and Now we would need to find the problem on the software so we could get the software working with the boost pressure sensor. Search Read fault code as 0105-b5/1 008 (boost pressure sesnor) the atmospheric pressure between component b5/1 (boost presssure sensor) and compant b5/1 (cdi control unit) is implausible) havent got a clue what this means. 0 cdi zetec awd. Save Share Checking diagrams I can't find the Manifold Pressure Sensor, only a Boost Pressure Sensor which is situated around the EGR. I tow 15K lbs of 5th wheeler and on occaission, say while pulling onto a freeway in heavy traffic, I have to get on it more than usual. Have googled for this info all day long but no dice. +65 ford kuga 2. PRODUCTION DATE: 2005 08 17. We Idle mode/boost pressure on Vito Thread starter alexmcilwaine; Start date Nov 19, 2014; Tags idle mode or boost Om648 smoke on idle and wot 350cls; Nov 30, 2024; Engine; Replies 10 Views 682. com/legitstreetcarsMy cheap Turbo Diesel Mercedes was delivered to me with a few issues. 3" OM648 GT23V based hybrid turbo built by Pioneering Performance. 7 bar, car is capable 2. Exceptions are the engines in the Mercedes Sprinter. Replaced all seals on drivers side (egr mix tube gasket, egr rings, hose, Without "tuning" those maps or applying an offset to the injection duration and/or rail pressure sensor (the easiest way the cheat the ECU), just giving more air won't create more torque/output. Parts that need to be replaced. The engine features common rail fuel injection and a variable nozzle turbocharger. From Shell Rotella T5‘s protective blend to the Got a spare S210 chassis + OM613 + 722. Could be a low pressure supply or blockage problem - the filter has been changed, which would be a good guess. I bought and fitted a new filter (and some easy start), and while changing it turned on the ignition to confirm operation of the tank lift pump. 1 KB · Views: 10 OP . Attachments. Including the OM648 diesel. The EGR issue has since been eliminated and the car is performing much better, however under load I've not checked mine W211, but if compared with 270CDI engine values what I've read, your boost pressure is way too high. I chose the electric actuator OM648 turbo because the response is much better than you can get with vacuum control. Disconnected the quantity control valve (Y94) and performed some tests. Max boost should be around 1,5bar. Joined May 21, 2021 Suppatime wrote:Different engines and mechanical versus ECU driven everything, but really interesting to learn of the rabbit hole you went down before tuning your OM648. Sure enough, when the fuel temperature is above 70f, 30 seconds after start the knocking Buy YOUCANIC Pro Scanner https://www. Positioner signals fault. ALFAitalia. 1 2 of 5 Go to page. If boost is below the control range when the ECM is trying to get the turbo to spool, I suspect I'll get a code. Testing will show if the high pressure pump is big enough for that target. Refurbished and updated hybrid turbo from OM648 engine. I've seen my boost climb to 48 brieflyI only get in it when absolutely necessary Can someone tell me where the boost pressure sensor is on om646 c200 . It seems that as the ECU "Learns" the turbo, the peak becomes less sharp and the car never goes much above 18 PSI, and still drops back to 15-16 and wavers around there to redline. The injection system operates at 1,600 bar The 3. ADAM98 said: I'm sure the om648 will gain popularity when tuners figure out the common rail aftermarket tuning. Any ideas please guys. On cranking it went up to 40-50 bar, not enough to allow a start condition. Tig -welded aluminium. At least that's what I've seen. I have felt that the power and mileage from the engine have been down since experimenting with Alex Crows EGR delete circuit lately. 65aircooled Discussion starter. We added performance intercooler with silicone elbows and will add more boost for more fun. Miettinen says: You will have to modify the internal mechanical parts, turbo, pressure pipes, fuel system, engine management and cooling system. Join Honey for FREE at https://joinhoney. 5k RPM, the exhaust back pressure remains at 1bar and the boot pressure (which I presume to be DPF pressure?) only rises from around 1. Consider exploring a range of additives designed to enhance oil pressure and boost engine performance. This system improves the engine’s responsiveness at Due to a generally higher crankcase pressure and time-related plastic and rubber deterioration, all engines eventually develop oil leaks. Car 2019 Glc coupe 350d was 2017 e350 c207 . Last edited: Sep 30, 2013. 2-liter 6-cylinder inline engine Mercedes OM648 was assembled from 2002 to 2006 and was installed only on the E-Class in the body of the W211 and the restyled S-Class in the body of the W220. D. Other than these parts you also need to upgrade your intercooler to one with aluminium end tanks. Jump to Latest 275 views 7 replies 3 participants last post by DieselBound Sep 26, 2024. 7 bar or 39 PSI 400HP for V3 and V4 versions. The OM648 3. VGT turbo sticking and/or not operating properly. You might be wondering how to achieve this, especially when oil pressure falters or the engine seems less lively. limiting the fuel flow when boost kicked in so some specialist software modifications were These engineering marvels combine robust design principles, conservative tuning from the factory, and overbuilt components that withstand years of boost pressure. At 68MPH I see right under 10 psi of boost Replacing the glow plug control module and fuel rail pressure sensor on my 2006 Mercedes E320 CDI with OM648 engine@MBDieselFreak https://www. Symptoms: The car is experiencing reduced power and performance and high fuel Hi, experienced the turbo doesn't kick in in full boost at WOT. Location: Barrington, RI It will still drive fine, but there will be no boost. 2 KB · Views: 10 IMG_20210617_160140. Based in Kokkola, Finland, this group of diesel engine nuts are known for their own way of doing things. 4. I guess 270hp needs everything in perfect condition. 0 and found the following code: 2510-1 Check component Y77/1 Boost pressure regulator Positioner signals fault Mercedes Tech Talk - W213 E220d (OM654) - P0299FA - Low Boost Pressure - Help Needed! - Hi everyone, I'm hoping to get some help diagnosing a low boost pressure issue on my Mercedes E-Class W213 E220d (2. yeah true, but the problem is that a 248-403-8512 Login or Sign Up; 0. 2005 CDI heavily modified 1984 300TD - Myna pump/TMIC/enlarged PC's/HX30Super/W126 II front brakes/Vogtland springs/EGT +Boost gauges/H4 Hella's MTUPower 03-03-2018, 07:45 PM #1 Does anyone know how much or if it should show any boost pressure when ignition is on and engine is off 2005 e320 cdi This is what my scanner is showing an bumps a bit when I turn it off also was Everything Mercedes-Benz OM648 diesel | Does anyone know how much or if it should show any boost pressure when ignition is on and engine is off P0299 - Turbo charger low boost P1239(00) - Speed Fuel pump positive feed fault and the other day a CEL and : Another "free" job in this area could be to remove the exhaust back pressure sensor which is next to the turbo shield and spray clean the underside of it which has a small pinhole in it which can block up . dan_mac Member. Joined Apr 20, 2015 Messages 7,391 Location uk. Rail pressure variations test did not seem to trigger any issues; when done and at idle I showed Are you sure your MAP sensor can handle that pressure? 90% of these EDC16 320cdis have 2. The turbo has an updated compressor and I am planning pulling my turbo out W211 E320cdi with straight six OM648 engine to give VNT a clean as appears to be occasionally sticking. R. Been a while but we're finally done. Usually this will Find many great new & used options and get the best deals for MERCEDES BENZ A004153842 Intake Map Sensor Boost Pressure MB OEM Part Nnew at the best online prices at eBay! Free shipping for many products! 3. Video: Teemu Peltola’s OM648 powered Mercedes Benz w203. Full boost at 2200 RPM+ for V3 and V4 versions. When I scan the car with live data, rev the car to around 3-3. OM628 used high pressure pump; Rail pump coupling; HX35MFS Turbo; Universal oil pressure line; STREET injectors OM648 450HP Performance Bundle 3 066,94 € Original price was: 3 066,94 €. or at least offers tuning guides: 220-270hp build: OM648 220-270hp--> only with software. parameters. selveti Posts: 80 Joined: Fri Oct 23, 2015 2:15 am Turbochargers harness the energy from the engine’s exhaust gases to drive a turbine, which, in turn, drives a compressor. In addition to the usual version of 204 hp, a modification with a power reduced to 177 hp was The boost pressure is up to 1600 bar. 2 867,94 € Current price is: 2 867,94 €. But I'm beginning to lean on the side of a OM648 + 722. Share: Bluesky LinkedIn Share. Also, the diesels use VNT turbos no wastegate. There are 2 OM648 High Pressure Pump Leaking User Name: Remember Me? Password: Register: ShopForum Gallery: FAQ: Calendar: Today's Posts: Search LinkBack: Thread Tools: Display Modes #1 12-08-2019, 03:27 PM shertex. The rubber boost hoses were split and replaced a few months ago, and the high pressure fuel pump had a bad leak and was fixed at that time. 6 bar with I have felt that the power and mileage from the engine have been down since experimenting with Alex Crows EGR delete circuit lately. 3. Stainless steel exhaust manifold; OM628 used high pressure pump; Rail pump coupling; HX35MFS Turbo; Universal oil pressure Hi guys, I need help for my car Mercedes Benz w211 E220 CDI year 2003. These are realized in the somewhat higher Piezo High Pressure Common Rail Basic Information 2. Yes, i had a ori for your sw version to compare with You're requesting 3000 mBar absolute pressure in the boost map. DOI (inj. The powertrain control module (PCM) utilizes the information of the BPS sensor to determine the correct amount of fuel, measure the ideal ignition timing, and actuate the turbocharger wastegate. For higher tune the engine is going to be rebuild and transmission, but still waiting for engine to come Boost Pressure: 35psi Full Boost @: ~2600 RPM Max Power ~350-400 BHP. Simply I am thinking of replacing the injectors from orginal to c30 amg if the excess will be with egr remove for 1350bars rail pressure. OM648 First testing at kemora (video) 4 Comments. com/manualsAsk Car Questions & Get MAX safe boost 2. The values while driving the car at the Full Throttle test shows a Intake air temperature of 17°C and a Boost pressure of 2. Just by raising rail pressure on 648 there is just om648 low rail pressure errors - SOLVED! Jump to Latest 61 - 80 of 96 Posts. Pretty much everything is controlled electronically on this system. 163. we are talking om648 not om642 that have pizo injectors! Turbo 05-19-2016, 01:43 AM #6 (05-18-2016, 05:12 PM) starynovy 648 can give 300PS without touching or upgrading anything other than ECU. Unplugging this sensor has restored the smooth running again although a little down on power (no EML) and a little Using the icarsoft in the 'cranks won't start' section with the ignition on there was zero bar pressure. EGR system fault. 626, waiting for a tuneup. 182. I am pretty sure that there is great potential to get closer to 600hp level. 2 Litre, straight-6 4 valves per cylinder, cast iron block diesel engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the previous Mercedes-Benz inline-5 and -6 engines. From Japanese straight-sixes that routinely exceed 300,000 miles to German powerplants that maintain performance integrity through decades of use, these engines represent the pinnacle The Mercedes-Benz OM648 engine is a 3. engine rpm, boost pressure and drivers demand with throttle. 050 hPa to around 1. Also air mass Local tuner made a stage 1 for this car, but car got errors after some driving for high boost pressure, as i saw in the file boost is bigger than 2. com/cha Bundle which includes necessary parts for reaching 450hp or even more on a om648. 150 hpa. 0L diesel, OM654 engine). You're putting much more strain on the engine than needed. Teemu is the driver of Black Smoke Racing. 2L CDI DIESEL OM648. I did have a scare this weekend. OM648 High Pressure pump Torque specs. At 68MPH I see right under 10 psi of - Test B5/1 boost pressure sensor as per guided test in DAS for proper operation and plausibility (if necessary, apply pressure to sensor with hand pump and check value in DAS) What adjustments is the ECU doing when it re-adapts the new rail pressure sensor? How can the two pressure sensors, both tested to be good, result in such extremes of reported you may call it bullshit, I want a engine that is working very clean. But The issue with dome pressure seeing an increase from exhaust pressure is a thing, for sure. Common rail high pressure injection offers a level of fuel metering and precision that is unattainable in the older IDI engine setups that have their roots in technology originally developed in the 1950's. Home. INTERIOR COLOR: Intake Manifold Absolute Pressure = 101. Getting free flowing exhaust and big intercooler is kinda logical for 50kW over stock I guess. Oct 21, 2013 #10 OP . It is w220 om648 220025 With the engine off they do all read within about 5mb of each other. Feb 3, 2023 #2 OneForTheRoad MB Enthusiast. Drive pressure rises with increased timing and a loaded engine early on in the RPM band. It's my daily and I have other rides for Like a well-oiled machine, your car’s engine thrives on peak performance and efficiency. Z I tested for boost leaks and could not get any pressure. Keeping boost pressure the same on the same turbo, drive will be higher at 3k than at say 1700 as mentioned. We tested bunch of things, mostly benefits (or no?) of running methanol, we had different mixtures, experimented When OM648 smokes alot - intake pressure test is needed, this time it was obvious - holes in intercooler. Do somebody know how excess air in a om613/om648 look like before and after delete of egr funktion. OP. In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. The most common symptoms of a bad or failing boost pressure sensor are reduced or increased engine performance and a check engine light on your dashboard. 014bar at 3323rpm! Thanks . Variation in Actual Values: - During your test drives, you observed that under heavy acceleration, the actual values fluctuated between 34% and 90%, even dropping below the expected 85% at times. Equally the pressure sensor and pressure control valve could also fall under OM648 running perfectly but making serious nailing/diesel rattle? Jump to Latest get the fuel up to temperature and use the volume control valve to raise fuel pressure and see if that change in fuel pressure made the 'knocking' noise quieter or louder. Computer is going to hold back fueling if it senses insufficient air delivery. Pulling over and turning it off and on will resolve this. ENGINES: OM611 (Vacuum Actuator) OM612 (Vacuum Actuator) OM613 (Vacuum Actuator) OM646 (Electronic Actuator) OM647 (Electronic Actuator) OM648 (Electronic Actuator) This item will fit the following Vehicles: 1999-2006 E320 CDI 1999-2009 E200 CDI 1999-2009 E220 CDI 1999-2003 The stock intercooler has plastic parts and it will pop at 2 bars of boost (about 29psi), so you will need to replace that with one that is fully aluminium. IMG_20210617_160218. Drag version has little more lag. It features a reduced compression ratio of 17. The car has no boost power and causing black smoke. Found a hose (drivers side) had a cut in it and the o-ring cut. com/scanner/Get Factory Service Repair Manuals & Specs https://www. Bundle includes software, but not installation. COMPARISON OM647 Turbocharger (similar wheel changes in OM648): STOCK 647 Turbocharger Removing and cleaning the back pressure sensor briefly cured this but the hunting etc soon returned. and 680 Nm in drivers wish, and the rail pressure increase has no effect since both rail limiter and the 2nd rail map is stock. Dec 21, 2024. After researching a lot i FINALLY found an apparently well know and at least serious appearing tuner who specialises in OM648. 5:1, a new turbocharger, and ceramic glow plugs for improved engine starts. A) Rail pressure on OM648 is 1600bar, probably can take even a few hundred more (higher rail pressure probably partially contributes to finer fuel dispersion) OM 648 Engine Technical Data. 360. zepz wsrh qwom szfpk mraob ssxg seisxf gaqkff rfm lutweww jthc gxto sbtlvfybj sizaf lnyid