86 fuel tank vent line question
Thread Starter
Pro
Joined: May 2025
Posts: 614
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From: OK
86 fuel tank vent line question
Is there a flow restrictor in this line?
If it's mentioned in the FSM I missed it, all the tests for the evap system pass, only thing I notice is the line going to the tank
acts like there is a metered orifice in it, it passes air both ways but it's slow to do so.
If it's mentioned in the FSM I missed it, all the tests for the evap system pass, only thing I notice is the line going to the tank
acts like there is a metered orifice in it, it passes air both ways but it's slow to do so.
Le Mans Master
Joined: Feb 2005
Posts: 6,485
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From: Clearwater Florida
I had a blockage in the small metal line that runs up to the carbon canister in the left front fenderwell. It was full of rusty junk but I was able to clear it by blowing compressed air through it. It has since been disabled as the vette turned into a dedicated drag race car. With 10% corn in the gas a steel pipe doesn't stand a chance. For a long term fix, you might consider running a copper or plastic hard line.
Thread Starter
Pro
Joined: May 2025
Posts: 614
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From: OK
Well apparently there is not any sort of intentional metering in that line. Mine was clogged in the short front most steel section and the short rear most steel section.
Cleared the front and bypassed the rear with some fuel rated hose. That was an annoyance.
Cleared the front and bypassed the rear with some fuel rated hose. That was an annoyance.
