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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 01-27-2006, 12:45 PM   #1 (permalink)
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97 540 Issues-help

Recently bought a 97 540 with 85,000 mi thru a wrecked car auction (though this car is clean titled). My neighbor owns a body shop, and I fixed the car, so very few bucks later I have a very nice looking 540, but the car runs terrible.

Smoke poors out the tailpipe when I start it, and when I punch the gas.

Is it valves, rings, what's the easiest way to fix it, or should I sell the car?

Either way I'll profit on the sale of the car, but its such a nice looking car, I would hate to sell it...

P.S. My 97 528 (5-speed), which I've had for years runs perfectly, and is currently the winter beater. This car has been a dream.

Black
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Old 01-27-2006, 08:39 PM   #2 (permalink)
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Quote:
Originally Posted by Doddsworthy
Recently bought a 97 540 with 85,000 mi thru a wrecked car auction (though this car is clean titled). My neighbor owns a body shop, and I fixed the car, so very few bucks later I have a very nice looking 540, but the car runs terrible.

Smoke poors out the tailpipe when I start it, and when I punch the gas.

Is it valves, rings, what's the easiest way to fix it, or should I sell the car?

Either way I'll profit on the sale of the car, but its such a nice looking car, I would hate to sell it...

P.S. My 97 528 (5-speed), which I've had for years runs perfectly, and is currently the winter beater. This car has been a dream.

Black
Congrats on your purchase! Can you describe the smoke? Color? If it's white, there could be a head gasket issue $$$, if it's blueish black, then it may be bad rings and/or valve seals$$$$.

If it's thick black smoke, there could be a number of things wrong, but a common one is that the upper (upstream) o2 sensors go bad and cause the car to start to run rich. Hard to believe no check engine code has been triggered. Or has it? Anyway, the sensors are about $100 each for the parts, and in fact are a 100,000-mile replacement item on my 1999 540 (slightly different engine electronics from your '97, but probably similar O2 sensors).
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Old 02-02-2006, 10:59 AM   #3 (permalink)
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Check engine is on, i'm going to check the codes this weekend.

Diffently a blue smoke, like its burning oil, but burns out after warming up.

Thanks for the info.
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