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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 05-16-2008, 02:32 PM   #1 (permalink)
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Angry 535i With Intermittent Misfire

Hi all, Hope you can help.

I have just purchased a 1997 535i (euro V8) and I have some sort of intermittent misfire. The car starts fine and engine sounds sweet when throttle is blipped. Cruising around the high street is also fine with no noticeable issues. However as soon as I make some use of the available power from my newfound gas-guzzler, the car begins to lose power, the revs go up but performance is defiantly reduced. Then when I come to a stop I can feel that the engine is missing and no longer smooth. This problem only disappears after the engine is shut down and re-started. I have changed the spark plugs and all appeared to show minimal signs of fouling.

No ECL appears on dash but saying that I have never seen the light on so bulb could have been removed by previous owner to hide fault (should I be able to see the ECL for a short time when ignition is turned on?).

My list of possible faults so far is:

  • Bad Ignition Coil
  • Fuel Filter
  • Manifold Gasket
  • Bad O2 sensor
  • Dirty Injector
  • Mass Air Flow Sensor

Any advice would be appreciated before I get it to a workshop for diagnostics.

Thanks
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Old 05-16-2008, 02:43 PM   #2 (permalink)
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hmm.... change the fuel filter if you dont know when the last time it was changed... could be your isse... you start demanding alot more fuel maybe it cant get threw so th engine leans out...
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Old 05-16-2008, 02:51 PM   #3 (permalink)
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hmm.... change the fuel filter if you dont know when the last time it was changed... could be your isse... you start demanding alot more fuel maybe it cant get threw so th engine leans out...
Thanks

This is what I was hopeing but starting with low cost fix first sounds good to me anyway. Will give it a try.

Fingers Crossed and all that
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Old 05-16-2008, 04:15 PM   #4 (permalink)
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fuel filtersare cheap.... and usually getting pretty clogged... also clean your MAF meter it can give you a couple of MPG and HP's back if it is drity
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Old 05-16-2008, 04:49 PM   #5 (permalink)
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Thanks for your help AlpineSixAndSeven, much appreciated.
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Old 05-16-2008, 05:09 PM   #6 (permalink)
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your welcome! contact me whenever! PM, AIM, or thread im on here ALOT
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Old 05-16-2008, 05:17 PM   #7 (permalink)
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lol, am starting to think your the only one on here.
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Old 05-16-2008, 05:41 PM   #8 (permalink)
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lol, am starting to think your the only one on here.
lol note my title "the whore" im always on here...... if just seems quite today....
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Old 05-16-2008, 05:55 PM   #9 (permalink)
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cool, no worries. Always good to have someone willing to help and chat.
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Old 05-16-2008, 06:10 PM   #10 (permalink)
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yeah... i spend ALOT of time on here probably too much... i got 2 bimmers so thats my excuse to myself
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1992 318i Coupe parts car
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Old 05-16-2008, 06:28 PM   #11 (permalink)
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yeah... i spend ALOT of time on here probably too much... i got 2 bimmers so thats my excuse to myself
Yea, free as well so I hear. Doing well there
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Old 05-16-2008, 07:28 PM   #12 (permalink)
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yep... just messing with wheel ideas
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