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-   -   Mystery problem - poor starting when warm any suggestions? (http://www.peachparts.com/shopforum/showthread.php?t=216887)

tino 03-18-2008 09:56 PM

Mystery problem - poor starting when warm any suggestions?
 
Have previously posted that my car would not start at all. In desperation I replaced the fuel pump and filter but that didn't help. Then I re-soldered the contacts on the OVP relay and removed and re-inserted just about any relay I could get my hands on. The car now again starts on the first crank in sub zero weather but frequently when restarting when the engine is warm it starts but labours and shakes as if it's only running on two cylinders and then after a minute or so the engine surges and runs well again. Also have noticed that the cruise control does not work as it should - it engages but then cuts out. Does the cruise and the rough starting have anything in common?
*** Also perhaps a dumb question - where is the cruise control unit?

500selproud 03-19-2008 11:35 AM

300e hot start issue
 
my ole 84 500sel euro had the same problem w/ warm starting. had to crank on it for over 5 seconds when hot and then it'd barely run. When cold it started right up no issues! I replaced the fuel accumulator and it started perfect when hot and got a little more performance out of it since the fuel accumulator was leaking off fuel pressure. So i'd try that but thats just my .02. good luck man!

tino 03-19-2008 11:42 AM

Thanks, please tell me what the fuel accumulator looks like.
 
Quote:

Originally Posted by 500selproud (Post 1797903)
my ole 84 500sel euro had the same problem w/ warm starting. had to crank on it for over 5 seconds when hot and then it'd barely run. When cold it started right up no issues! I replaced the fuel accumulator and it started perfect when hot and got a little more performance out of it since the fuel accumulator was leaking off fuel pressure. So i'd try that but thats just my .02. good luck man!

Thanks, please tell me what the fuel accumulator looks like

500selproud 03-19-2008 02:58 PM

It is similiar looking like the fuel filter here is a link.

http://www.thebenzbin.com/parts/?N=11143+4294966981+1668&Ntt=Fuel%20Accumulator


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