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Source of Vacuum Leak- Ideas 200 1990

posted by  Smitty on  Mon Jan 6 17:30 CST 2003
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last visit: Sat Aug 9 22:44 CST 2014
[RELATED]

Check the intake snorkel (between AMM and throttle body). Pull it off and look carefully at the underside for splits... had 2 fail on me.

I've got the VX cam on my '92, and on startup there's a bit of a lope when she's running a little rich, but it does not idle rough at all. If your valve clearances are way out - more than just a few thou - that might cause a problem, but that's way down on the list of suspects.

After you've checked for vacuum leaks, perhaps do a throttle body cleaning (advice I need to heed one of these days!).






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