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Rough start

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Old 03-24-2005, 08:09 PM
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Rough start

Sl500 95,

Engine cranks fine, but then shakes the whole car really bad until warmed up.

It goes away gradually and there is no abnormal noise that i can hear, but its just a very violent shape until the RPMs drop to 500-600rpm

when it starts (cold) it keeps it at 1000rpm for a while.

Any idea what can be causing hte massive shaking?


~fk
Old 03-28-2005, 02:30 PM
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I found out it only does it in the very cold temps or during the rain. Seems like water/moisture has something to do with it?

~fk
Old 03-28-2005, 02:32 PM
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Check the fuel pressure regulator.
Old 03-29-2005, 03:35 AM
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FYI:

Also check the cam advance plungers under the electro-magnetic covers. Sometimes one will stick open(out), causing one cam to stay advanced and cause a rough idle, common on a M119 engine with high miles and poor oil quality.

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