Gas pours out of vapor canister on 1995 Toyota p/u if gas cap is tight?.

GNUSZ53

MEMBER
1995 TOYOTA PICKUP
167,000 MILES

If I tighten the gas cap down till it clicks Fuel will pour out of the vapor canister lower hose. Stops shortly after loosening cap. Replaced cap with OEM and still does it.

Friday, September 9th, 2011 AT 9:44 PM

7 Replies

JACOBANDNICKOLAS

MECHANIC
109,650 POSTS

Is the tank being overfilled?

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Friday, September 9th, 2011 AT 10:09 PM

GNUSZ53

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4 POSTS

No is not. It happens at all levels and actually seems worse when below 1/2 tank.
I lost orginal cap, replaced with off the shelf and problems seems to have started around that time.I replaced that cap with OEM. I have replaced vapor canister and hope it is not ruined?After fuel ran thru again.

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Wednesday, September 14th, 2011 AT 10:11 PM

JACOBANDNICKOLAS

MECHANIC
109,650 POSTS

There has to be a blockage somewhere. If I can find one, would a schematic of the system be helpful to you?

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Wednesday, September 14th, 2011 AT 11:14 PM

GNUSZ53

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4 POSTS

I will except any help.I have been unable to find a solution. Haynes book no help.

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Thursday, September 15th, 2011 AT 2:30 AM

JACOBANDNICKOLAS

MECHANIC
109,650 POSTS

I can't find a schematic for some reason, but while I was looking, I may have found something. The system has an EVAP canister vent solenoid. I can't for the life of me find a picture. If the vent isn't working, it will force gas into the system. There is also a purge solenoid that can do the same. Is any of that listed in your manual?

Try to hang in there. I'm trying. We'll get it figured out/