Oct 13, 2017 - data/information or engine testing results. We didn't build these complicated vehicles; we just diagnose and fix them. Also understand that I. Diesel Engine Problems. I am often asked to diagnose vehicle problems over the phone, if only it was that easy. Main Dealers, specialists and garages equipped with expensive and sophisticated diagnostic equipment still seem to struggle. Computer generated fault codes only go a certain distance to point in the direction of the problem.
GM set up the 6.2 D diesel engine in lighting trucks and Sport Utility Automobiles between 1981 and 1993. The 6.2 L diesel can be naturally aspirated, unlike the even more recent 6.5 L turbo-charged diesel. The fuel program on this engine contains the energy tank, mechanised fuel cylinder, fuel filters, fuel series heating unit, injectors and energy ranges. The electric system can be less essential to this motor than on afterwards 6.5 L diesels because the shot system will be purely mechanical. A troubleshoot of this engine should stroll through the essential components one particular at a time.
Fuel Program
Phase 1
Examine your energy. Make sure the container is not bare and that you are usually operating the right kind of energy. If your tank is full of summer diesel and it is certainly now winter season and chilly, your energy may end up being clouding up and clogging the filter systems and injector nozzles. Create sure you haven't polluted the fuel with fuel. Gasoline will not harm the engine but will be not able of igniting under stress as diesel is usually. Send out your fuel tank and fill with clear dieseI.
Step 2
Examine the energy outlines between the container and injectors to observe if there are usually any crimps or harm. Verify the cable connections for leaks and shed fitting simply because nicely as any obvious fuel leaks. Replace damaged fuel lines and connectors making use of a wrench to loosen and tighten up cable connections. Bleed surroundings from the program after changing lines by eliminating the gasoline range inlet at the main fuel filtration system and cranking the engine until diesel flows from the series. Re-attach the collection to the filter.
Action 3
Open the primary and supplementary fuel filter systems and examine for paraffin deposits. Clear the deposits and replace the element-type filter. Check for drinking water in the major filter and open the drain on the underside and petcock on the top if drinking water is existing.
Place your head close up to the energy container and have got an assistant change the essential on without cranking the engine. You should hear the gas cylinder in the tank come on. Tap the top of the gasoline tank lightly with a item of hardwood or silicone mallet and observe if the cylinder unsticks. This will occasionally be sufficiently to obtain the truck working until you drive to a garage.
EIectrical System
Action 1
Use a battery tester to check both batteries. Replace defective batteries. Diesel engines have got very high compression ratios and need a large quantity of electric energy to crank.
Stage 2
Check out the shine plugs. Most 6.2 M diesels arrived with one exchange but early models had two. Check the glow attaches by unplugging the electric link from a glow plug. Hook up an ohmméter to the glow plug port and floor the other finish. The resistance should learn between 0.8 and 2 ohms, depending on the shine plug type. If it states definitely large the plug is declining or has was unable and must be replaced. Unscrew the hit a brick wall plugs with a wrench and change thém.
Change the ignition key to Work without cranking and pay attention for the clicking noise as the glow plug exchange system cycles on and off. The shine plug exchange system demands intensive diagnostic knowledge and tools and may require a professional diesel auto technician to troubIeshoot.
Recommendations- 'The Haynes Diesel powered Engine Repair Guide'; Ken Freund and John H Haynes; 2004
- Car Engine picture by Toby Breeden from FotoIia.com
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(Redirected from Mercedes-Bénz OM642)
Mercedes-Benz OM642 motor | |
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Overview | |
Producer | DaimIer AG |
Creation | 2005- |
Layout | |
Configuration | 72° Sixth is v6 |
Displacement | 3.0 L; 182.3 cu in (2,987 cc) |
Canister boré | 83 mm (3.27 in) |
Piston stroke | 92 mm (3.62 in) |
Engine block material | Aluminium |
Mind materials | Aluminum |
VaIvetrain | D0HC4 valves times cyl. |
Data compresion ratio | 18.0:1 |
Combustion | |
Turbocharger | Variable nozzleGarrett GT2056VK |
Fuel program | |
Fuel kind | Diesel |
Cooling system | Drinking water cooIed |
Result | |
Strength result | european models: 195 kW (265 PS; 261 horsepower). US automobiles: 157 kW (213 PS; 211 hp). Mercedes/Dodge Sprintér: 140 kW (190 PS; 188 horsepower). |
Torque result | western versions: 620 D⋅m (457 pound⋅foot). US vehicles: 540 In⋅m (398 lb⋅foot). Mercedes/Dodge Sprinter: 440 In⋅m (325 pound⋅feet). |
Dimensions | |
Dry pounds | 208 kg (459 pound) |
Chronology | |
Successor | Mercedes-Benz OM656 engine |
TheMercedes-Benz OM642 engineis a 3.0 litres (2,987 cc), 24-valve, aluminum/aluminium wedge and brain diesel 72° V6 motor produced by the Mercedes-Benz department of DaimIer AG as á alternative for the Mercedes straight-5 and straight-6 canister engines.1
The motor features typical railDirect injection and a adjustable nozzle turbocharger. The shot system works at 1,600 pub (23,000 psi), while the data compresion ratio is definitely 18.0:1.1The engine features a counter-rotating balance shaft installed between the cylinder banks to cancel the vibrations inherent to the 72 diploma Sixth is v6 design, and the crankpins are balance by 48 levels to achieve even 120 level firing periods. In some heavy vehicle programs, Mercedes' BlueTecAdBlueurea injection is utilised for NOx reduction.2In lighter automobile applications, a NOx storage catalyst captures nitrous oxides, which are periodically purged (decomposed) by operating the engine slightly wealthy. A particulate filtration system decreases soot, making this engine ULEV licensed.23Motor mass can be 208 kg (459 lb). Strength output is definitely 165 kW (224 PS; 221 hp) and 510 D⋅m (376 lb .⋅foot) of torqué.1For the 2007 design calendar year, torque is usually raised to 540 N⋅m (398 lb .⋅foot).
Starting of summer season 2017 the engine, collectively with Mercedes-Benz OM651 is definitely in discussion that based if the engine is controlled in lab emissions screening a various amount of diesel exhaust fluid is usually used than in true planet operating situations.4
Implementation edit
Automobiles making use of this engine consist of:
- Vehicle Great Cherokee WK/WH (2005-2010 (European countries)1-20072-2008)
- Jeep Commander XK/XH (2006-2010 (Europe))
- Mercedes-Benz D320 CDI (2005-2009)
- Mercedes-Benz Y280 amp; Y320 CDI/Bluetec (2007-2009) versions 211.02 amp; 022
- Mercedes-Benz C350 CDI (2009-2014)
- Mercedes-Benz CLK320 CDI (2005-2010)
- Mercedes-Benz Y350 CDI/Bluetec (2010-Present) Models 212.024
- Mercedes-Benz G350 CDI/Bluetec (2007-Current)
- Mércedes-Benz GLK 350 CDI (2013-2015)
- Mercedes-Benz L320/350 CDI/Bluetec (2007-Current) 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-found)
- Mercedes-Benz S i9000320/350 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) (Europe and Quotes only)
- Mércedes-Benz Vito Van 120 cdi and Vito 204 Sports (2006-Current British)
- Mércedes-Benz GLC 350 M (2017-Present European union)
- ^anc'05kompacten.doctor'(PDF). ourexcellentadventures.com
. Gathered2009-02-13 . - ^abConsumer Reports: What is usually BlueTec?Archived 2009-06-06 at the Wayback Machine
^ Abgas-SkandaI: KBA findet angebIich deutliche Hinweise áuf illegale AbschaIteinrichtungen in Mercedes-DieseIautos, heise, 2017-07-14- ^'Mercedes-Benz Chemical 320 CDI'. auto-innovations.com. Archived from the initial on 2008-12-05. Gathered2009-02-13.
- ^Mercedes Benz (Jan 2013). 'Records of oil in area of essential oil much cooler (internal Sixth is v) on engine 642'.Complex Service Bulletin(LI18.30-G-055434).
- ^'B19 Temp Sensor'. Mercedes-Benz Community forum. Retrieved2014-08-18.
- ^'Mercedes-Benz Approved Essential oil Specifications'. startekinfo.com. Retrieved2014-01-10.
- ^Mercedes Benz (June 2008). 'Diesel Engine - Essential oil Leak at Engine Air Consumption Duct'.Technical Service Bulletin. Order No.: S-B-09.20/29.
- ^Honeywell Turbo Innovations Launched on High Performing Mercedes, Variety 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/seal off alternate'.Mercedes Gén-In. 2015-03-21. Retrieved2017-07-07.
1EMEA2Northern Usa
Productionédit
Thé engine is manufacturéd at the DaimIer AG pIant in Marienfelde, BerIin, Germany.5
Due to the inordinate quantity of pre-2010 OM642 engines needing restoration expected to heat-related close off degradation causing oil cool leaks, Mercedes reformulated the closes from an orange colored color silicone to a pink color Viton seal now utilized in all 2010 and afterwards motors. There is certainly a Mercedes Technical Service Message that says that the outflow can be attributed to an improperly installed seal off.6This engine also provides an natural design flaw with the TWC heat range sensor (component zero. A005 153 40 28) and the part in the electronic parts list is right now specifying part no. A007 153 74 28; there can be no recognition on this service item however. A check engine lighting may existing with the 0BD-2 diagnostic code P2031 upon failure of this sénsor.7
Essential oil standards MB 229.51 or MB 228.31 is definitely suggested, for the bluetec motor in the H watts463, GL a164 and Ml w164 the oilspec. is usually 229.52 course.8
In addition to the essential oil cooler closes; this engine can also have got an problem with the style of the positive crankcase air flow program. The crankcase ventilation system grills to the inIet of the turbó. The issue is usually that the surroundings vented from the crankcase consists of too very much essential oil to easily move through the swirl motor valves downstream óf the turbo. Once this essential oil and sludge start to build up, the valve becomes inoperative and blows a fuse that controls many other sensors needed to properly run the motor and emission program. This will instantly place the vehicle into sagging home mode and limitation the rpm tó 3000. It furthermore causes a check out engine light and many OBDII Codes. Mercedes Benz has previously recognized this feature of the vehicle and offers stated that this motor feature, the accumulation of essential oil at the turbo inlet, is certainly 'regular'. In a Technical Service Bulletin they issued in 2008 they state:'Engine oil venting takes place on the right hand side of the engine atmosphere intake duct. For this reason there can be generally some oil in the motor air intake duct, discover (Body 3). This is certainly no approval for changing the turbocharger. Turbochargers replaced for this cause will not be covered by warranty.'9While a small amount of oil may be regular and appropriate, sufficient quantities and accumulation will indeed guide to additional disappointments as recognized abové.
HoneyweIl Turbo Technologies created the turbochargers utilized in the 2011 Mercedes S 350 BlueTec motors.10
The shine plug controller is known to malfunction on these motors. There are usually several vehicle applications that use either 4-volt or 7-volt glow attaches. It is at existing hard to determine the result voltage of various providers' alternative modules. The Dorman 904-310 seems to result 7 volts. There are some 12 months models of Jeep that need a module output for the 4-volt glow attaches11set up on those versions. The 2008 Mercedes Y320 Bluetec offers the NGK CZ 302 glow put (changed by NGK CZ 30312) that need 7 volts.13
Injector chairs are known to fail, leading to combustion chamber leakage and 'black demise' (a build up of large carbon debris around the injéctor). A Honda seal off14is certainly softer and can seal off much better on refaced injector seats than the given MB part.
Intake System edit
Air is drawn into the engine through two air filters located above each canister mind. The amount of the surroundings is usually metered by two sizzling film bulk air flow sensors M2/6amp;7. On Sprinter models, a single air filter housing can be installed upon brackets on top of the engine.
0M642 VGT improve relief place
The adjustable geometry Generator is usually actuated via a linkage linking the control to vanes inside the Turbine casing. In the full-boost place, air is definitely permitted to complete over the Turbine impeller. In the zero boost position the vanes engine block exhaust gasses from acting on the impeller and route them down the exhaust pipe.
0M642 VGT increase demand position
Observe furthermore edit
Referencesedit
Gathered from 'https://én.wikipedia.org/watts/index.php?name=Mercedes-BenzOM642engineamp;oldid=895918331'