Vacum canister leaking?
#1
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Vacum canister leaking?
2003 Lesabre, 113,000 miles.
I hear a "metal popping" as I exit my Buick after shutting off the engine. The metal popping noise is the same noise the old one gallon paint cans make when the temperature changes. Any suggestions? I am thinking the fuel vacuum canister is leaking but it is plastic.
Also my "Check gas cap" flashes in the DIC. I replaced the gas cap with an Autozone cap and replaced the 3/8" main steel fuel pipe-filter along with the two steel 5/16" recovery fuel line and canister pipe. The check gas cap came first before the popping noise.
Any suggestions?
Mike from Cleveland
I hear a "metal popping" as I exit my Buick after shutting off the engine. The metal popping noise is the same noise the old one gallon paint cans make when the temperature changes. Any suggestions? I am thinking the fuel vacuum canister is leaking but it is plastic.
Also my "Check gas cap" flashes in the DIC. I replaced the gas cap with an Autozone cap and replaced the 3/8" main steel fuel pipe-filter along with the two steel 5/16" recovery fuel line and canister pipe. The check gas cap came first before the popping noise.
Any suggestions?
Mike from Cleveland
#3
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I agree, sounds like the vent solenoid might me stuck shut causing excessive vacuum in the tank. There is a pressure sensor in the tank that monitors whats going on, usually it sets a code because there is a leak and it can't build any vacuum, sounds like you have the opposite problem and have too much vacuum.
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There is no build up of vacuum in the fuel tank. Also, I forgot to mention the "Check Engine Light" is illuminated. The light cleared up once but is back. The code is something like A404, not sure on the code.
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Update, I found a partially rotted wire clamp and loose hose fitting on the vacuum charcoal canister. Replaced with stainless steel hose clamp and "Check Engine" light reset itself.
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