Engine Flooding Problem
02-12-10, 03:14 AM
#1
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Engine Flooding Problem
Well im in big trouble here, everytime i turn my car off it floods itself. when i get gas turn the car off and try to turn it back on it wont start unless i pull the egi fuse. same goes for school. any solutions for this? i recently changed my fuel filter, spark plugs and oil if that has to do with anything. Help please this is becoming such a hassle i hate deflooding every god dam time its so embarassing...
02-12-10, 10:13 AM
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fuel injectors might be leaking...sometimes after i finish driving and turn the car off...and come back a few hours later...it'll crank but wont start...then i pull the egi fuse...crank for a few seconds...put it back in and it'll start beautifly
02-13-10, 03:58 PM
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Flooding problem as described is common in the 86-88 cars. The 89-91 cars have a circuit that kicks in if the starter is engaged and the throttle is full, and in that condition it cuts off the fuel injectors.
Some shops sell a EFI cutoff switch you can install that gives you a button to push which will cut off power to the injectors. You can also make your own with a $2 automotive relay and any momentary contact switch. I have one built from parts at a local electronics surplus store. It works great. You can also wire it to your alarm so that when the alarm is tripped there is no way to start the car (no fuel). I have mine wired through a second relay such that it *only* works when the starter is *engaged*. That way, there is no problem if you bump the switch with your knee or whatever while driving; it doesn't cut the injectors off during normal ops, only while the starter is active.
Some people hook the switch up to the fuel pump circuit, but I have not tried that.
Supposedly the whole problem is actually due to leaky fuel injectors. One potential solution is to pull your injectors and send them out for professional cleaning and testing.
Some shops sell a EFI cutoff switch you can install that gives you a button to push which will cut off power to the injectors. You can also make your own with a $2 automotive relay and any momentary contact switch. I have one built from parts at a local electronics surplus store. It works great. You can also wire it to your alarm so that when the alarm is tripped there is no way to start the car (no fuel). I have mine wired through a second relay such that it *only* works when the starter is *engaged*. That way, there is no problem if you bump the switch with your knee or whatever while driving; it doesn't cut the injectors off during normal ops, only while the starter is active.
Some people hook the switch up to the fuel pump circuit, but I have not tried that.
Supposedly the whole problem is actually due to leaky fuel injectors. One potential solution is to pull your injectors and send them out for professional cleaning and testing.
Last edited by calpatriot; 02-13-10 at 04:00 PM.
02-13-10, 05:55 PM
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I'd say leaking fuel injectors if you haven't had any other problems.
My s5 gxl floods all the time because of low compression after a faulty radiator cap made it overheat and bye-bye coolant seals. Anyways; I'd say go ahead and get a compression check and if it isn't right you can do what I had to do.
Just hook up the fuel pump cut off switch and then crank it w/o the fuel pump on; it'll start up on its own and then you can switch the fuel pump on that way you don't waste any gas and don't have to screw with the EGI fuse.
It is also cool when your friends try to start your car w/o knowing about the fuel cut off switch. lol.
My s5 gxl floods all the time because of low compression after a faulty radiator cap made it overheat and bye-bye coolant seals. Anyways; I'd say go ahead and get a compression check and if it isn't right you can do what I had to do.
Just hook up the fuel pump cut off switch and then crank it w/o the fuel pump on; it'll start up on its own and then you can switch the fuel pump on that way you don't waste any gas and don't have to screw with the EGI fuse.
It is also cool when your friends try to start your car w/o knowing about the fuel cut off switch. lol.
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