Author
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Topic: Failed the evap test at referee station.
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Marcus
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Member # 2387
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posted
Hello can anyone guide me to testing the evap System with a smoke machine. Mainly where I can hook up to test the system for leaks?
-------------------- R.I.P "B"
Posts: 164 | From: union city | Registered: Jan 2003
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fredfifty
Since 9/2010
Member # 10320
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posted
check your vapor seal at the fuel tank (where the fuel neck goes into tank) those go bad and create a leak, happened to me [ 2024-10-29, 02:15 PM: Message edited by: fredfifty ]
-------------------- RIP EDSON VELORO IM A NOOB, EXCUSE ME. THANKS. 92 LX Coupe 5.0 CARB'd BOLT-ONS SMOG LEGAL 62 Rag Impala
Posts: 4965 | Registered: Sep 2010
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throttlepositionsensor
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Member # 14838
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posted
What fredfifty said. Do not get the made in China Dorman filler neck seals. They do not last very long. Get a made in USA Daniel Carpenter Reproductions seal. Take off your gas cap and fill your gas tank with smoke. Wrap a rag around your smoke machine hose if it's too small to seal.
Posts: 132 | Registered: Dec 2022
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JohnB
Tech Moderator
Member # 969
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posted
What year?
And yes, tank leaks will cause this issue.
-------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500
Posts: 6525 | From: Orlando FL/Redding CA | Registered: Mar 2002
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Marcus
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Member # 2387
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posted
Sorry just seeing this but would like to update everyone hahah. Ran smoke from the hose that goes from bottom of intake through the vapor canister all the way back to the gas tank. Seal on the charcoal canister was leaking. The vapor seal was leaking and also the purge thing on the top of the tank. Basically everything was leaking haha. Replaced it all went back to the damn referee and passed thanks for the help everyone
-------------------- R.I.P "B"
Posts: 164 | From: union city | Registered: Jan 2003
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