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Turbo on way out? 700 1985

posted by  slicker on  Mon Jun 24 16:41 CST 2002
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Recently acquired a 744Turbo, great deal at $700 Cdn but was somewhat neglected for the last coupla years I figure.

Did a complete once over on the car with new plugs, wires, checked all vacuum/pressure hoses for leakage, cleaned TB and did a tune-up on the electrical connectors with dielectric grease. Fuel pressure hasn't been verified, but both pumps running ok and pulling vac. hose off regulator raises idle.

Observation #1:
Acceleration is still not up to par. (have owned 4 turbos, so know where it should be). 0-100km is in the ten second range.

Observation #2: Is car idles for a period more than 5 minutes, it starts to emit blue smoke, enough to be quite noticeable. Was so bad yesterday that it took a 10km jaunt on the higwhay to clear it up.

Observation #3:
When checking the turbo for free play, spinning the shaft or turbine seems a bit stiffer than normal. No free play whatsoever apparent, either side-to-side or front to back.


My question is whether these are indicative of a turbo going bad. I'm hoping not, and figure if it was, I would definitely see some play on the turbo.
But still, looking for input from those more experienced/knowledgeable.
Turbo problem or unrelated others to troubleshoot?


Thanks in advance,

Andre Corriveau
85 744Turbo
B230FT/AW71 with 215,000kms
Ontario, Canada





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