SL/R129 misfire - MBWorld.org Forums

Mar 31, 2015 | 08:41 AM

MBCox

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Joined: Jan 2015

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Jeep Grand Cherokee Mercedes 300sl 24

misfire

Does anyone know what causes a misfire when engine is warm, 300SL 24 1991.

Apr 5, 2015 | 11:31 PM

cliffyk

Member

Joined: Jul 2013

Posts: 126

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From: Saint Augustine, FL

1998 SL500

Quote:

Originally Posted by MBCox

Does anyone know what causes a misfire when engine is warm, 300SL 24 1991.

You have asked a rather broad question, here is a rather broad answer (pretty much in order of what I would check first):

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Bad spark plugs;

Bad plug wires;

Bad distributor rotor;

Bad distributor cap;

Bad ignition coil wire;

Bad ignition coil;

Bad fuel filter;

Clogged air filter;

Bad fuel;

Low system voltage (possible battery/generator/regulator problems);

Low compression when hot (worn piston rings/leaky valves/bad head gasket);

Worn timing chain;

Worn timing chain guides;

Worn crank/cam pulleys;

and a myriad of other problems...

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