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#1
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Hot Start issue (M111.960)
My W124 E220(M111.960) has trouble starting when hot.
Symptoms 1) When car is hot/warn I need to crank longer. 2) When car starts it shows symptoms of miss-fire, feels like only couple of cylinders have fired, Pressing accelerator fixes the issue. 3) I don't see this issue when Re-starting interval is short ( < 1 min). Diagnosis 1) No error codes 2) Fuel pump starts humming when fuel level is low ( < reserve), otherwise operates normally. Solution ? From what i could gather from previous posts is, it could be 1) Fuel pump ? 2) Accumulator ? 3) Injectors ?
Thank you Last edited by PhantomLord; 06-29-2009 at 05:36 AM. |
#2
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bump!
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#3
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Fuel pressur bleed-off is a good possibility. The fuel pressure regulator is designed to hold fuel pressure in the rail for at least 24hrs.
If you can attach a fuel pressure gauge and check for bleed off.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#4
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I'm not following you here Doc. If the OP's complaint was of cold hard starts I could understand this better (i.e., pressure leaking away overnight). But since cold hard starts apparently aren't a problem, the notion of fuel pressure loss as the cause puzzles me. Symptoms seem more like leaky injectors flooding the engine after it's been running and then sitting awhile, but still hot. What am I missing?
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1988 California version 260E (W124) Anthracite Grey/Palomino Owned since new and still going strong and smooth MBCA member Past Mercedes-Benz: 1986 190E Baby Benz 1967 230 Inherited from mom when she downsized 1959 220S Introduced me to the joys of keepin' 'em goin' There are only 10 kinds of people in the world--those who understand binary and those who don't |
#5
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Ok, will check that, would it bleed into the vacuum line?
Edit: Got this http://forum.mercedes-benz-clubs.com/viewtopic.php?t=20579&sid=d0e649178dccaf14e83c272c4fbb73c4, but I still have same doubt as 'Cal Learner'. |
#6
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AND, Or back to the tank.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#7
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I have the same issue, 90% of the time when cranking cold, it fires up right away... seems that only hot starts are the issue. warm starts are very likely to crank for 5 - 10 secs with holding my foot on the gas and it slowly caughs faster and faster till it finally starts. I did an alldata bulletin search on it and found this... [IMG]file:///C:/Users/James/Desktop/83508998.gif[/IMG]
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#8
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My 300E does it too.....cold starts are pretty quick (less than 2 seconds of crank time)....but randomly it has a hard time when hot and sitting for more than 15 minutes when re-started. Prompt re-starts hot are no issue (within 10 mins).....sometimes I'll crank 5-6 seconds, no go, and will try again, then it starts right up....some times it will run with a lope at like 200rpm for 3-5 seconds, then come up to speed normally and run fine. Strange indeed. It has never "failed to start" though, it always goes by the second try if necessary....and once started it has no issues at all.
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#9
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My E220's symptoms are exactly same as pawoSD's 300E, starts on the second try + sometimes 200rpm issue (mostly one or two cylinders don't fire).
I have postponed it for now, but plan to check fuel pressure first when I start diagnosis. |
#10
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Failure to start after Engine Wash
My MB with an M 111.960 E220 Engine wont start after the e4ngine was washed. what could be the problem?
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