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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 07-17-2004, 04:03 AM   #1 (permalink)
jib
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Gents

I have a 93 520 (e34) (m50) and it has a misfire, Ive checked the plugs and they seem ok, what else should I check.

Jib
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Old 07-17-2004, 10:45 AM   #2 (permalink)
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not sure on your car does it have coils on top of plugs? I had a misfire on my 3 series 00 it was a bad coil replaced it and works fine now. 2cents worth used
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Old 07-17-2004, 12:45 PM   #3 (permalink)
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Have you checked the HT leads and the distributer cap to make sure each cylinder is actually getting a spark? Is there any blue smoke from the exhaust cos that can be a sign that incorrect combustion is occuring within the block
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Old 07-17-2004, 01:07 PM   #4 (permalink)
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Fit a new set of leads and hopefully the problem will be fixed..........if not as others have mentioned move on to the coil and dizzy.Someone with a smart-scope would quickly identify where the probelm is for you,and would only take half an hour to do so.

Good Luck.

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Old 07-17-2004, 03:24 PM   #5 (permalink)
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Quote:
Originally posted by ali-bumble@Jul 17 2004, 01:25 PM
Have you checked the HT leads and the distributer cap to make sure each cylinder is actually getting a spark? Is there any blue smoke from the exhaust cos that can be a sign that incorrect combustion is occuring within the block
Its the later type leads, not the usual dizzy cap etc, theres no smoke on start up.

jib
Ps what tyre presure should I be running on 205x60's
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