Charcoal canister filling with fuel?

A1 Mech
Part of the furniture
Posts: 1797
Joined: May 7th, 2006, 10:24 pm
Location: Gold Coast

Charcoal canister filling with fuel?

Unread post by A1 Mech » March 4th, 2013, 10:52 am


Mate has a a 1984 Range Rover which appears to be filling the charcoal canister with fuel and over flowing into the tappet cover? What could be a cause of this and what could be a solution?

Thanks for any info.

Peter Aawen
Posts: 20928
Joined: June 17th, 2005, 8:01 pm

Re: Charcoal canister filling with fuel?

Unread post by Peter Aawen » March 4th, 2013, 11:03 am

Probably the breather or overflow vent on the fuel tank is blocked, so whenever you fill the fuel tank, any expansion of the fuel (which always occurs when fuel comes out of the ground at a lower temp & gets pumped into the fuel tank & then expands as it reaches ambient temps) gets forced thru the emission control hoses & into the charcoal cannister, etc.

Check all the vents and breathers on the fuel tank, make sure that none of the fuel hoses are kinked or blocked, and make sure that all the one way check valves in the fuel system work the way they should. ;)

Good Luck
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