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Old 04-02-2009, 01:45 PM
Registered User
Join Date: Aug 2007
Location: Sealy, Texas
Posts: 58
Another starting issue

1987 260E
Vehicle starts and idles great when its cold.
After a run sufficient to warm up the motor if I turn it off for more than say 20 mins. it takes forever to start. Turns over great but will not fire. Once it fires it idles great and runs fine. When I did a search I found mostly the reverse, poor cold starting, no problems once its running.
Question: is there an accumulator or something like it in the fuel system that maintains fuel pressure while the vehicle is idle (motor off).

Appreciate any input

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Old 04-02-2009, 02:38 PM
Registered User
Join Date: Jun 1999
Location: Albuquerque, NM USA
Posts: 1,947
Hard hot starting is often the result of the motor being flooded due to leaking injectors.

22-year old injectors are ready for replacement.

See if it starts better by holding throttle open when cranking.
Kent Christensen
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles
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Old 04-02-2009, 06:56 PM
home of 4,5,6,8 cylinders
Join Date: Jul 2005
Location: Vancouver BC
Posts: 504
some car u need to floor the gas inorder to start. It does sounds like flooded or no gas

if u have a can of cold start try it, if flooded then should be equally hard to start, if no gas then it should fire up right away.

Or pull a plug to see if its wet.

my fnd's 560 his ATF was disappearing, we think it went into the vacuum too. As modulator diagphragm broken, also find it very hard to start after driving for a while.
1st start is always good. Now car sold we got rid of the prob.
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Old 04-03-2009, 12:50 PM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
likely that fuel adjustment is too lean.try putting foot on gas when starting warm,if it fires more easily then richen the main adjustment a little.

David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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