Question for those with the CP3045 vapor canister - JeepForum.com

 
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post #1 of 4 Old 11-15-2013, 05:14 AM Thread Starter
cmsurfer
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Question for those with the CP3045 vapor canister

'85 CJ7, 252 with weber carb

I swapped out the vapor canister based on a write-up I found. Everything went well and it seems to have fixed my idle/stalling issue. The only thing I notice is that the vacuum seems to always be on and there is a loud hissing sound from the breather on the new canister.

Should the vacuum be on all the time?

Below is a picture of where the vacuum line is hooked up to:



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post #2 of 4 Old 11-15-2013, 05:24 AM
Matt1981CJ7
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Surfer,

The canister should only purge in non-idle situations when the engine is warm. That's why it's connected to ported vacuum thru a CTO.

Matt
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post #3 of 4 Old 11-15-2013, 07:13 AM Thread Starter
cmsurfer
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Matt,

Thanks for the reply.
Just to be clear, this is hooked up properly?
Is it normal to hear it hissing all the time?
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post #4 of 4 Old 11-15-2013, 07:25 AM
Matt1981CJ7
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If it's "hissing" at the canister, no, that's not normal.

It's difficult to tell if yours is hooked up properly from the pic you've provided.

I can tell you that non-plugged port on your CTO is a major vacuum leak, assuming there is vacuum supplied to the CTO.

Matt
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