ce 300 intermittent running

streethawk

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Hi guys need help. My mate has a 1990 _91 ce300 which runs fine for 10mins then cuts out and won't start for an hour then same again. Cps?
 

panason1c

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cps is where I would start looking.

During the time it will NOT start, does the rev counter needle bounce slightly while cranking?, if it doesn't, defo cps.
 
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streethawk

streethawk

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cps is where I would start looking.

During the time it will NOT start, does the rev counter needle bounce slightly while cranking?, if it doesn't, defo cps.
Ok thanks I'll ask him. Anychance it could be a air leak? Iam thinking not because it runs sweet for first 10mins?
 

Deadly Dave

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I had similar problems on my 300CE and found the hoses at the rotary idle valve were perished.
 
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streethawk

streethawk

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I had similar problems on my 300CE and found the hoses at the rotary idle valve were perished.
Iam not too clued up with these engines, would that be on the inlet manifold or throttle body? Thanks.
 

Deadly Dave

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Take off air filter housing and its near the dip stick. Spray carb cleaner into the valve to clean it when you're there.
 
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streethawk

streethawk

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leicester
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E320cdi sport
cps is where I would start looking.

During the time it will NOT start, does the rev counter needle bounce slightly while cranking?, if it doesn't, defo cps.
Were is cps on these? Bell housing? Thanks.
 

brigadier

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Could also be the ignition module. One way to check is to spray a little freezer spray on it after engine stalls and see if that changes anything. The heat transfer compound gets old behind them, they may overheat.
 
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streethawk

streethawk

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leicester
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E320cdi sport
Could also be the ignition module. One way to check is to spray a little freezer spray on it after engine stalls and see if that changes anything. The heat transfer compound gets old behind them, they may overheat.
Hi were would that be as I've never even looked under the hood of one of these iam afraid thanks.
 

ray_hennig

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Hi guys need help. My mate has a 1990 _91 ce300 which runs fine for 10mins then cuts out and won't start for an hour then same again. Cps?
When mine did that, it was the rotor arm. Only replace with MB original or, failing that, Beru/Bosch. NOTHING else.

Good luck.

RayH
 

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