February 18, 200620 yr So this little canister deal on the passenger side (see arrow)? Among several other issues that are springing up with this car, today that vacuum line (the small one with the T connector in the background of pic2) popped off while I took the aircleaner off. Then I noticed unburnt fuel dripping from the hose. This is the line that goes to the side of the intake manifold. What is this thing and why's it leak fuel???
February 18, 200620 yr It really shouldnt be leaking fuel It is a device that lets air into the manifold under high vaccum, i.e. when deaccelerating at high revs. Dunno why it would be leaking:confused:
February 18, 200620 yr It's called an anti-backfire valve. There definitely shouldn't be any fuel there.
February 18, 200620 yr Yep, its the anti-backfire valve. Maybe it has been pluged into the wrong place? like a fuel line.. Theres so many pipes on those EA82's, its just craziness.
February 18, 200620 yr Author It's called an anti-backfire valve. There definitely shouldn't be any fuel there. Well since I redid the heads I noticed it backfiring a lot more (maybe just coincidence), always during de-celleration. I drive almost exclusively freeway driving (60 mi a day to work and back). Also, to say its "leaking" is exaggerating a little. when I pull the line after being driven, a drop of fuel will develop on the end of the hose. I've wiped it with my finger -sure enough it's unburnt fuel- and one more drop will develop, wipe again and that'd be all. Yep, its the anti-backfire valve. Maybe it has been pluged into the wrong place? like a fuel line.. Theres so many pipes on those EA82's, its just craziness. That hose where I noticed the fuel is a direct line to the passenger side of the intake manifold. Right above the cylinder head port. Still a weird deal though huh? Carb too rich maybe?
February 18, 200620 yr hi i think that this part sephose to leave the fuel gasses in the engine and dont let it go to the open air....
February 18, 200620 yr One of my GLs is stock carbed. I'll take a look later today and tell you where the hoses go.
February 18, 200620 yr OK, i just looked and the large hose is connected to a fitting on the EGR valve housing. The vacuum line is connected directly to the port on the manifold closest to it.
February 18, 200620 yr Author OK, i just looked and the large hose is connected to a fitting on the EGR valve housing. The vacuum line is connected directly to the port on the manifold closest to it. Yep, that's what I got. I'm thinking the carbs too rich. I've got black plugs at #3 & 4 cylinders. 1 & 2 are looking good.
February 18, 200620 yr I had an anti-backfire valve failure with my ea71 and just removed it and plugged the hoses, my mechanic rebuilt the carb and set the differant idle speeds etc.. and no more backfiring. Just my two cents
February 19, 200620 yr here's another time when the SEARCH function is your friend http://www.ultimatesubaru.org/forum/showthread.php?t=18903
February 19, 200620 yr Author here's another time when the SEARCH function is your friend http://www.ultimatesubaru.org/forum/showthread.php?t=18903 okay, that still doesn't tell me why there's fuel dripping from it.
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