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#1
04-12-2009, 10:38 PM
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Begging for help. 190e 2.6
Newbie to the forum and in need of any help. I am the proud owner of an 89 190e 2.6. Having problems with warm starts. The car starts fine when cold. When its hot and I shut it off, it will start fine unless i let it sit any more than 10 to 15 minutes. In which case it will take about 7 to 10 times of starting and stalling before it starts, huffs and puffs for about 5 to 10 seconds, clears up and once again runs fine. Almost like its choking itself out or something. I recently gave it a complete tune up and changed the coolant temp sensor. Im really racking my brain on this one. Any expertise would be extremely appreciated.
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#2
04-13-2009, 08:18 AM
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Most likely a internal fuel bleed off issue. Common on CIS engines.
TWO most common fuel bleed off places are the fuel accumulator & fuel pressure regulator. Try searching the forum for those items.....of course connecting a gauge & seeing if the pressure bleeds-off would be the starting point.
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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
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#3
04-13-2009, 12:45 PM
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I have a couple of questions about this:
Would the fuel accumulator & fuel pressure regulator be temperature sensitive? If the fuel pressure bleeds down, would it take so long (7 to 10 starts) to get the pressure back?
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#4
04-13-2009, 12:59 PM
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Most likely there is fuel bleed-off all of the time.
But when cold the mixture is so rich that retaining fuel pressure isn't necessary. A Hot soak restart requires that fuel is ready to be injected & no air in closed system.
__________________
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
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