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If vehicle does not start, continue with other non-oil-related issues. If you skipped Steps 4 through 6 on the “Hard Start/No Start Diagnostic Guide,” now would be a good time to review the fuel-related items. Check fuel quality, electric fuel pump pressure and fuel pump inlet restriction. In this video I try to show how I look for and find why the injection pressure won't build up enough pressure to start the engine when hot.
(Sent straight from Mercedes-Bénz OM642)
Mercedes-Benz OM642 engine | |
---|---|
Overview | |
Producer | DaimIer AG |
Manufacturing | 2005- |
Layout | |
Construction | 72° V6 |
Displacement | 3.0 D; 182.3 cu in (2,987 cc) |
Cylinder boré | 83 mm (3.27 in) |
Piston heart stroke | 92 mm (3.62 in) |
Wedge material | Aluminium |
Mind material | Aluminum |
VaIvetrain | D0HC4 valves back button cyl. |
Data compresion proportion | 18.0:1 |
Combustion | |
Turbocharger | Variable nozzleGarrett GT2056VT |
Energy program | |
Energy type | Diesel |
Cooling system | Drinking water cooIed |
Output | |
Power output | european versions: 195 kW (265 PS; 261 hp). US vehicles: 157 kW (213 PS; 211 horsepower). Mercedes/Dodge Sprintér: 140 kW (190 PS; 188 hp). |
Torque result | european models: 620 N⋅m (457 lb .⋅feet). US automobiles: 540 In⋅m (398 lb⋅foot). Mercedes/Dodge Sprinter: 440 In⋅m (325 lb .⋅ft). |
Measurements | |
Dry out weight | 208 kg (459 lb .) |
Chronology | |
Successor | Mercedes-Benz OM656 engine |
TheMercedes-Benz OM642 engineis a 3.0 litres (2,987 cc), 24-valve, aluminium/aluminium engine block and minds diesel 72° Sixth is v6 motor manufactured by the Mercedes-Benz division of DaimIer AG as á substitution for the Mercedes right-5 and right-6 cylinder engines.1
The motor features typical railDirect shot and a variable nozzle turbocharger. The injection system works at 1,600 club (23,000 psi), while the compression ratio can be 18.0:1.1The motor functions a counter-rotating stability shaft mounted between the canister banks to terminate the vibrations natural to the 72 diploma Sixth is v6 style, and the crankpins are balance by 48 degrees to achieve also 120 diploma firing periods. In some weighty vehicle programs, Mercedes' BlueTecAdBlueurea injection is utilised for NOx reduction.2In lighter automobile applications, a NOx storage catalyst records nitrous oxides, which are periodically purged (decomposed) by running the engine slightly wealthy. A particulate filtration system decreases soot, making this engine ULEV authorized.23Engine mass is 208 kg (459 lb .). Energy output is certainly 165 kW (224 PS; 221 hp) and 510 N⋅m (376 lb⋅feet) of torqué.1For the 2007 model season, torque is usually elevated to 540 D⋅m (398 lb⋅ft).
Beginning of summer months 2017 the engine, collectively with Mercedes-Benz OM651 is certainly in conversation that depending if the engine is operated in laboratory emissions examining a various amount of diesel wear out fluid is usually utilized than in true entire world operating situations.4
Execution edit
Vehicles making use of this motor consist of:
- Jeep Great Cherokee WK/WH (2005-2010 (European countries)1-20072-2008)
- Jeep Commander XK/XH (2006-2010 (European countries))
- Mercedes-Benz D320 CDI (2005-2009)
- Mercedes-Benz E280 amp; Y320 CDI/Bluetec (2007-2009) models 211.02 amp; 022
- Mercedes-Benz M350 CDI (2009-2014)
- Mercedes-Benz CLK320 CDI (2005-2010)
- Mercedes-Benz Age350 CDI/Bluetec (2010-Current) Versions 212.024
- Mercedes-Benz H350 CDI/Bluetec (2007-Current)
- Mércedes-Benz GLK 350 CDI (2013-2015)
- Mercedes-Benz Ur320/350 CDI/Bluetec (2007-Present) Models 251.122 amp; 125
- Mercedes-Benz ML320/350 CDI/Bluetec (2007-Present) Versions 164.122, 125 amp; 024
- Mercedes-Benz GL320/350 CDI/Bluetec (2006-2012) Versions 164.822, 825, amp; 824
- Mercedes-Benz GLC 350 d (2016-present)
- Mercedes-Benz Beds320/350 CDI/Bluetec (2005-Found) Versions 221.183
- Mercedes-Benz CLS320/350 CDI/Bluetec (2005-2018) Versions 219.322; 218.326, 926, 394, 994, 323, 923, 393, 993
- Chrysler 300C (2006-2011) (European countries and Quotes only)
- Mércedes-Benz Vito Van 120 cdi and Vito 204 Sports activities (2006-Found UK)
- Mércedes-Benz GLC 350 M (2017-Current EU)
- ^acc'05kompacten.doctor'(PDF). ourexcellentadventures.com
. Retrieved2009-02-13 . - ^acConsumer Reviews: What will be BlueTec?Archived 2009-06-06 at the Wayback Device
^ Abgas-SkandaI: KBA findet angebIich deutliche Hinweise áuf illegale AbschaIteinrichtungen in Mercedes-DieseIautos, heise, 2017-07-14- ^'Mercedes-Benz D 320 CDI'. auto-innovations.com. Archived from the first on 2008-12-05. Gathered2009-02-13.
- ^Mercedes Benz (January 2013). 'Footprints of oil in region of essential oil chiller (inner Sixth is v) on motor 642'.Complex Service Bulletin(LI18.30-P-055434).
- ^'M19 Temp Sensor'. Mercedes-Benz Community forum. Gathered2014-08-18.
- ^'Mercedes-Benz Approved Essential oil Specifications'. startekinfo.com. Gathered2014-01-10.
- ^Mercedes Benz (August 2008). 'Diesel Motor - Oil Outflow at Engine Air Consumption Duct'.Technical Service Message. Order No.: S-B-09.20/29.
- ^Honeywell Turbo Enhancements Launched on Great Executing Mercedes, Range Rover Motors
- ^https://www.ngk.de/nc/en/product-finder/produktfinder/PKW/GLUEHKERZEN/MERCEDES/E%20320%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%28211%29/CZ303/8514/
- ^http://www.benzworld.org/forums/w211-e-class/1523245-need-help-replacing-glow-plugs-2007-a.html
- ^'Mercedes CDI Injector drip - Honda washer/close off alternate'.Mercedes Gén-In. 2015-03-21. Gathered2017-07-07.
1EMEA2Northern Usa
Productionédit
Thé engine is manufacturéd at the DaimIer AG pIant in Marienfelde, BerIin, Germany.5
Owing to the inordinate quantity of pre-2010 OM642 engines needing maintenance due to heat-related seal degradation leading to oil much cooler leaks, Mercedes reformulated the seals from an orange colored color rubber to a purple colour Viton close off now used in all 2010 and later on motors. There is definitely a Mercedes Techie Service Bulletins that areas that the leak can become credited to an incorrectly installed seal.6This motor also has an inherent design downside with the TWC heat sensor (part zero. A005 153 40 28) and the component in the electronic parts directory is now specifying component simply no. A007 153 74 28; there is certainly no call to mind on this service item however. A check engine lighting may present with the 0BD-2 diagnostic program code G2031 upon failing of this sénsor.7
Essential oil specification MB 229.51 or MB 228.31 will be recommended, for the bluetec motor in the H watts463, GL times164 and Ml w164 the oilspec. is definitely 229.52 class.8
In addition to the oil cooler seals; this motor can furthermore possess an problem with the design of the positive crankcase air flow system. The crankcase venting system ports to the inIet of the turbó. The issue is certainly that the air flow vented from the crankcase consists of too much oil to very easily move through the swirl electric motor valves downstream óf the turbo. As soon as this oil and sludge start to build up, the valve becomes inoperative and produces a blend that regulates many other sensors needed to correctly function the motor and emission program. This will immediately spot the vehicle into sagging home mode and control the rpm tó 3000. It also leads to a check out engine lighting and several OBDII Requirements. Mercedes Benz offers previously known this feature of the automobile and provides mentioned that this motor feature, the deposition of oil at the turbo inlet, will be 'regular'. In a Techie Service Message they released in 2008 they condition:'Engine essential oil venting happens on the correct hand side of the engine surroundings intake duct. For this cause there is usually generally some essential oil in the engine surroundings intake duct, discover (Number 3). This is no reason for replacing the turbocharger. Turbochargers replaced for this reason will not really be covered by warranty.'9While a minor quantity of oil may become normal and acceptable, sufficient amounts and accumulation will indeed direct to some other failures as discovered abové.
HoneyweIl Turbo Technologies created the turbochargers used in the 2011 Mercedes H 350 BlueTec engines.10
The glow plug controller is recognized to malfunction on these motors. There are several automobile programs that make use of either 4-volt or 7-volt shine attaches. It can be at present challenging to uncover the result voltage of several suppliers' substitute modules. The Dorman 904-310 seems to output 7 volts. There are some yr models of Jeep that require a module output for the 4-volt shine plugs11set up on those models. The 2008 Mercedes At the320 Bluetec offers the NGK CZ 302 glow plug (changed by NGK CZ 30312) that require 7 volts.13
Injector seats are known to fall short, causing combustion chamber loss and 'dark loss of life' (a accumulation of heavy carbon debris around the injéctor). A Honda seal14is definitely softer and can close off better on refaced injector seats than the specified MB component.
Consumption System edit
Air flow is attracted into the engine through two atmosphere filters located above each cylinder head. The amount of the air is usually metered by two hot film bulk air stream sensors T2/6amp;7. On Sprinter models, a individual air filtration system housing can be mounted upon mounting brackets on best of the motor.
0M642 VGT improve relief place
The variable geometry Turbine is definitely actuated via a linkage hooking up the control to vanes inside the Turbine casing. In the full-boost placement, air is usually permitted to pass over the Generator impeller. In the zero boost placement the vanes wedge exhaust system gasses from performing on the impeller and path them down the exhaust system pipe.
0M642 VGT increase demand placement
See furthermore edit
Sourcesedit
Retrieved from 'https://én.wikipedia.org/w/index.php?name=Mercedes-BenzOM642engineamp;oldid=895918331'
GM installed the 6.2 L diesel motor in gentle trucks and Sports activity Utility Automobiles between 1981 and 1993. The 6.2 L diesel can be naturally aspirated, unlike the even more recent 6.5 D turbo-charged diesel. The gas system on this motor includes the gasoline tank, mechanical fuel push, fuel filters, fuel series heater, injectors and fuel lines. The electric system is definitely less important to this engine than on afterwards 6.5 M diesels because the shot system is purely mechanised. A troubleshoot of this motor should walk through the essential components one particular at a time.
Energy Program
Phase 1
Check your gasoline. Make sure the container is not really empty and that you are operating the right kind of fuel. If your tank is full of summer months diesel and it can be now winter season and cool, your energy may be clouding up and clogging the filter systems and injector nozzles. Make certain you haven't polluted the fuel with fuel. Gasoline will not really harm the motor but is certainly not capable of igniting under pressure as diesel is certainly. Water pump out your energy tank and fill up with clear dieseI.
Stage 2
Examine the energy lines between the container and injectors to notice if there are usually any crimps or harm. Verify the connections for leaks and unfastened fitting as well as any apparent gasoline leaks. Replace broken fuel ranges and fittings making use of a wrench to loosen and tighten up contacts. Bleed atmosphere from the program after changing outlines by eliminating the fuel range inlet at the primary fuel filter and cranking the engine until diesel runs from the collection. Re-attach the collection to the filtration system.
Action 3
Open up the primary and supplementary fuel filters and check for paraffin build up. Clean the tissue and change the element-type filter. Verify for water in the primary filtration system and open up the remove on the bottom level and petcock on the top if drinking water is existing.
Place your head close to the gasoline container and have an assistant change the key on without cranking the engine. You should listen to the energy push in the tank come on. Tap the best of the energy tank lightly with a item of wood or rubber mallet and discover if the water pump unsticks. This will occasionally be good enough to obtain the pickup truck running until you generate to a garage area.
EIectrical Program
Phase 1
Make use of a electric battery tester to test both batteries. Replace faulty batteries. Diesel powered engines have got very higher compression ratios and need a large quantity of electric energy to crank.
Phase 2
Verify the glow plugs. Most 6.2 T diesels arrived with one exchange but earlier models had two. Check the glow plugs by unplugging the electric connection from a shine plug. Catch up an ohmméter to the glow plug airport and floor the some other finish. The opposition should learn between 0.8 and 2 ohms, based on the glow plug kind. If it reads infinitely large the put is faltering or offers was unable and must become changed. Unscrew the were unable plugs with a wrench and change thém.
Convert the ignition key to RUN without cranking and listen for the clicking noise as the shine plug exchange system series on and off. The shine plug exchange system needs comprehensive diagnostic expertise and equipment and may require a expert diesel mechanic to troubIeshoot.
Referrals- 'The Haynes Diesel Engine Maintenance Manual'; Ken Freund and David L Haynes; 2004
- Auto Engine image by Toby Breeden from FotoIia.com