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Old 11-05-2002, 02:18 AM
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Join Date: Sep 2000
Location: beaumont, texas
Posts: 226
can worn valve guide seals cause rough idle?

When i changed the spark plugs on my 300e, I found oil on them. I would suspect the valve guide seals need to be replaced. My car also seems to have a rough idle. I then put in fresh plugs and the idle improved. After several thousands of miles the rough idle returned. Could this be caused from the worn valve guide seals?
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Old 11-05-2002, 08:32 PM
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Join Date: Sep 2002
Posts: 2,486
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Old 11-06-2002, 07:29 AM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Oh yeah. Guide wear will foul plugs pretty guickly, especially if you combine that with a weak secondary ignition.

Project Smoker, '87 603 powered wagon
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Raleigh NC
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Old 11-06-2002, 08:01 AM
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You betcha!

Have a great day,
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