4rnr

Well, my 88 3.0 5spd 4runner had been flawless so far. but I got back from the weekend and tryed to start the truck and it took a minute of cranking to start it. so I drove it around the block, shut it off and it started up perfectly. It seems that the longer I let it sit the longer it takes to start.

I noticed a strong smell of gas so I poped the hood and stuck my head in and heard a hissing from between the fire wall and engine. sounds like a small air leak. I cant find out where exactly its coming from, but all that sback there that I can see is the fuel hard line to the drivers fuel rail. and a soft line coming from the charcoal canister.

Basically before I go tearing into the biggest PITA area of the truck, does anyone have ideas of how I should go about this, or what may be wrong.

Bumpin' Yota

hmmm hissing plus a gas smell? id be willing to bet you have gas spraying aboot back there....got any type of fluid blowing out and dripping down?

Also with the egine off, turn on the ignition and push in the opening of the VAFM. This will kick on the fuel pump. If you suddenly hear hissing then, you know its fuel system leakage. If not its probably a vacuum leak and the gas smell is probably from a leaking o ring around an injector or something...

4rnr

hmmm, well the gas smell is new.

and id love to pretend to know what the VAFM is but that would be dishonest. So whats the vafm, Id like to do this in the morning before work bc the hissing goes away after about an hour or 2 (which also leads me to beleive that it is definatly fuel related.

snap-on

VAFM = (Something like) Volume air flow mass (reader/sensor) thingie


ie im fairly shure its the flapper door in your air box.

as for your prob....

if its not the fuel line that runs up the back of the motor/firewall on the pass side, its likely a heater hose that connects to the water distubution block on the VERY back of the motor.

fuel smell could be secondary o-ring leak as mentioned

4rnr

Vein Air Flow Meter or something, I got it. It started great this morning. I think its a fuel line the heater hoses are cool. its coming from below them. WHY GOD WHY DOES THIS HAVE TO HAPPEN BACK THERE!!!!

new gas smell....hard to start if its been sitting....hissing coming from area near fuel line....hissing will eventually stop if its been sitting long enough....Its got to be a fuel line. the only thing is I dont know if its leaking fuel or venting fumes. I cant see fuel, but fuel flashes so fast escpecilly on a hot engine block. Ill climb back there when the motor isnt still hot.

4rnr

well I climbed back there and looked I think it must be coming from a plastic thingy that is oh so cleaverly tucked up under the back of the plenum. WTF is this. It looks like a fuel filter. Is it part of a return line?...

95RunnerSR5

sounds like the main fuel line going to the fuel rail..the plenum isn't hard to get out of the way. infact you can probablly just unbolt it and move it slightly to the front of the truck and not have to mess with the tangles of vacuum hoses

4rnr

thats the plan, the line comes directly up from the filter and tank and then into this thingy, then into the drivers side fuel rail