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Old 10-06-2005, 01:45 AM   #1
1st Gear Newbie
Join Date: Oct 2005
Location: guelph
Posts: 22
98 328i cylinder 5 misfire

my check engine light came on a few days ago when i stuck an friends OBD reader it popped up a cylinder 5 misfire i went to one mechanic and he couldnt figure it out its like the car will sometimes run fine and as soon as it revs over 6000 rpm it will run like shit and when you come to a stop the car shakes if anybody knows plz help.(it only runs like shit for bout ten minutes after it revs to past 6k) . i thought it might be the coils but the mechanic said no and i just changed the sparkplugs a month ago.
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Old 10-06-2005, 09:51 AM   #2
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Location: Toronto
Posts: 12,472
ouch.... same thing happened to me when i was down in guelph last week, i think it might be something in the air there!

Do a compression test. I replaced my plugs cause the car was running like shit and it was a misfire, after the compression test, it actually turned out to be fried piston rings. YAY!!
Keven Soldo
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Old 10-06-2005, 10:54 AM   #3
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Switch the coil around with another cylinder.

If the misfire moves to that cylinder its the coil, if it stays on cylinder 5, its something else.
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Old 10-08-2005, 12:24 AM   #4
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aight thanks i'll try that out then
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Old 10-08-2005, 11:00 AM   #5
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also try switching the spark plug with another one just to test it out.

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Old 10-09-2005, 10:42 AM   #6
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misfires are never fun to try and fix man, but do go ahead and try changing the coils around, get new sparks...
and cross your fingers that it won't need head work :S
Always and never are two words you should always remember never to use
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