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Clogged cat? 700 1986

posted by  scn760 on  Wed Apr 24 14:52 CST 2002
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I noticed a small exhaust leak between the turbo and the turbo downpipe, along with a bad backfiring at idle, and inconsistent idle. BLue smoke comes from the tailpipe if I idle it for 3 minutes. The car stumbles/ backfires from idle all the way up to 3/ 4000 RPM, and I unplugged each fuel injector individually- it didn't have an effect on the stumbling idle- the car kept backfiring but lost a cylinder if I unplugged the injector.

I just noticed this roughness yesterday, and the exhaust seems like it just opened up afterr the turbo.

Thanks






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