So, I do The Pinch Test
04-17-2005, 05:09 PM
#21
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Re: So, I do The Pinch Test
Daniel Paisley wrote:
>
> Mike Romain wrote:
>
> There is one small vacuum line to the top that comes from the CTO valve
> on the intake manifold.
> There is a purge line just below that that goes to the PCV line and can
> just join it with a T fitting. This is the testing line.
> Then there is a line to the carb float bowl and one to the gas tank.
> Check the link out that Bill gave and let us know which line has the
> bolt.
> The only one to 'pinch' test is the one from the PCV to the canister. if
> this is the one with the bolt, the canister is likely dead.
> If it can be hooked back up and passes the pinch test, then I would
> suspect the $2.00 air filter on the bottom of the canister is plugged.
> This is a common reason to unhook them because it puts a vacuum on the
> gas tank, but the biggest reason is a failed purge valve. (the pinch
> test)
> ----------------------------------------------------------
> The hose is rather small and it is coming from a T that goes to the
> carb.
Carb base?
If so that is the purge/PCV line.
Check out the link Bill gave.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
>
> Mike Romain wrote:
>
> There is one small vacuum line to the top that comes from the CTO valve
> on the intake manifold.
> There is a purge line just below that that goes to the PCV line and can
> just join it with a T fitting. This is the testing line.
> Then there is a line to the carb float bowl and one to the gas tank.
> Check the link out that Bill gave and let us know which line has the
> bolt.
> The only one to 'pinch' test is the one from the PCV to the canister. if
> this is the one with the bolt, the canister is likely dead.
> If it can be hooked back up and passes the pinch test, then I would
> suspect the $2.00 air filter on the bottom of the canister is plugged.
> This is a common reason to unhook them because it puts a vacuum on the
> gas tank, but the biggest reason is a failed purge valve. (the pinch
> test)
> ----------------------------------------------------------
> The hose is rather small and it is coming from a T that goes to the
> carb.
Carb base?
If so that is the purge/PCV line.
Check out the link Bill gave.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
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