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88 350tbi motor that ive had troubles keeping running. changing the intake over to a carb one now and during old gasket clean up I was vacuuming the mating surface after scraping. I noticed what looked like a lot of water coming out of the passenger side head from the exhaust crossover port and stopped. looked at it. then went back to vacuuming. got at least a pint-quart out by the looks of shop vac before I smelled gas. Killed it quick and smelled the hose and it appeared to be raw gas.... all of it should that be possible? im just glad the vac didn't explode.... that much gas in a 16gal pail could make a hell of a BOOM
You ARE lucky !....I've seen a garage that had it's overhead door blown 30 feet out into the street and the cinder block building moved several inches off it's foundation when a kid tried using a shop vac to pick up gas that was spilled during a gas tank removal to replace an electric in-tank fuel pump..
It only took about 10 seconds of running time to ignite the fumes and BOOOM!.
The explosion was heard a mile away..
I don't know how raw gas could end up in the EGR ports really--its a long shot,but the carb would have to flood REALLY bad to send enough raw fuel through the cylinders and fill those EGR ports in the intake..it's highly unlikely you wouldn't have noticed it running that rich or smelling like raw gas..
I believe what may have happened is the open fuel line started running gas out due to pressure in the tank... I unhooked everything and removed the intake last weekend and then this weekend (after a week of 90+* weather) i found my engine full over the lifters with gas didn't see it before the vacuuming because i had foil covering the lifter valley during cleanup that was started last week.. i noticed liquid on top of the foil but thought it was rain that got past the cowl seal. i drained about 6 gallons of oil and gas out of it the fuel line is sorta above the one exhaust port and the lifter valley. multiple oil changes and a preprimer in store for it now
OH,that could explain it...
Once gas starts flowing out of an open line,it can siphon the tank dry,even if it doesn't seem possible for the gas to flow "uphill"--some pressure from the tank getting warmed up by the sun could pump quite a bit of fuel out..
Well,I guess your engine's innards will be sparkling clean for its extended storage now at least....
should that be possible? im just glad the vac didn't explode.... that much gas in a 16gal pail could make a hell of a BOOM
didn't see it before the vacuuming because i had foil covering the lifter valley during cleanup that was started last week.. i noticed liquid on top of the foil but thought it was rain that got past the cowl seal. i drained about 6 gallons of oil and gas out of it
the fuel line is sorta above the one exhaust port and the lifter valley. multiple oil changes and a preprimer in store for it now
