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Carb and Vacuum?

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Old May 23, 2006 | 05:48 PM
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celeryman22
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Default Carb and Vacuum?

My car is running ok. But I noticed while checking the vacuum I had to turn up the idle. Then when I connected everything again I had to turn it back down. I've traced the source of the "leak" to the line that runs to the tranny. Should there be any difference between having this line connect or not in regards to the idle speed?

Thanks
Mike
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Old May 23, 2006 | 05:50 PM
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I'm pretty sure anything that is connected below the butterflys will matter as far as idle, could be wrong though...
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Old May 23, 2006 | 09:39 PM
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If you're running a TH350 with the vacuum modulator at the right rear end of the tranny , it's possible that the modulator is leaking. Check it with a hand-held vacuum pump tester to see if it leaks down. HTH.
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Old May 24, 2006 | 08:21 AM
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I am running the Turbo 350, so if I put a vacuum load on the tranny it should hold? If it leaks can the only thing be the vacuum modulator?

Mike
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Old May 24, 2006 | 09:07 AM
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It should hold and not affect idle. If it does there is a leak in the mod
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Old May 24, 2006 | 09:16 AM
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Thanks, I will check it out. It rasises the rpm about 100.

Mike
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