pcv & carb
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Instructor
Joined: Apr 2005
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pcv & carb
today i got my new breather with nipple, to replace the pcv valve. when i installed it, the motor would die. couldn't keep it running. reinstalled pcv and it purr like a kitten. i know to keep the pcv valve on there and i won't have any more trouble. but i would like to understand whats going on,and why this breather won't work. 76 L48 auto
thanks for any input
russ
thanks for any input
russ
Racer
Joined: Mar 2005
Posts: 487
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From: Jacksonville FL
the breather runs between the valve cover and your air filter, yes?
i think what marshrat is asking you is "did you remember to block off the vacuum nipple on the carb?"
if you didn't, it will effect your A/F ratio and could be the cause of why your engine keeps dying.
hope this helps,
Mike.
i think what marshrat is asking you is "did you remember to block off the vacuum nipple on the carb?"
if you didn't, it will effect your A/F ratio and could be the cause of why your engine keeps dying.
hope this helps,
Mike.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
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From: At my Bar drinking and wrenching in Lafayette Colorado
Originally Posted by rodesmg
no the nipple is for running the same line to the carb it just doesn't have the guts of a pcv valve. it is built like a breather cap with a nipple for the line to carb
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Originally Posted by lars
That's a wide open vacuum leak. A breather cap like that is not intended to be used with the carb PCV vacuum port - it's intended for use with a crankcase evacuation system. You have to run a PCV if you hook it up to the carb since you have to have a controlled vacuum leak into the carb. Your open breather system needs to be used with a header collector evacuation system or a vacuum pump.
