Thread: In tank fuel pumps SUCK!

Got a question after doing this too. The car runs and accelerates much better after doing this, but it seems to idle pretty rough, or have a miss at idle. I checked all the plugs were getting spark. One of the fuel injectors connector clip is sort of messed up, so I unplugged it when the car was idling. I even revved it up and plugged it in and unplugged it a couple times to see if it would make a difference. It made no noticable difference...

Pull off the egr valve, and check the port it connects to. That port is usually caked with garbage, and that will cause a miss.

Hold something like a screw driver up to the injector with it plugged in and the engine running. Put your ear up to it and you will be able to tell if the injector is pulsing or not.

Quote: Originally Posted by IIIQuaZIII I just spend all day changing my roomates fuel pump on a 90 buick century. What a pain in the ass. I am freaking high as a kite on gas fumes. What a crappy job. Any idea what a mechanic would charge to drop the tank and do that kinda work? I don't know. I have a several vehicles with in tank pumps. Yea they are to "try ones patience". My suburban had a recall notice so GM replaced...

That job is a WHOLE lot easier in a shop than on your back in the shop you lift vehicle grab the trans jack take down the straps lower jack a bit disconnect fuel lines and unplug electrical drop tank blow crap off the top with compressed air turn the lock deal bada bing bada boom your done

it wasn't hard when i changed the one on the mustang, took maybe a hour just gotta make sure your about out of gas before u start so its easy to lower/lift the tank

Just don't do what my friend did back in college. He was going through fuel pumps in his IROC left and right for some reason. He got tired of dropping the tank so he cut a hole in his floor directly above the fuel pump/hangar retainer. This was actually a smart idea however he asked me to help him replace his tank a few months later. I asked why and come to find out, he had another bad pump. But when he replaced the last one he welded up...

the Buick 3.3L has no EGR And did you do the light blab test? "One of the fuel injectors connector clip is sort of messed up" that's new was that before or after messing with it? through some cleaner in the system to

Quote: Originally Posted by IIIQuaZIII Got a question after doing this too. The car runs and accelerates much better after doing this, but it seems to idle pretty rough, or have a miss at idle. I checked all the plugs were getting spark. One of the fuel injectors connector clip is sort of messed up, so I unplugged it when the car was idling. I even revved it up and plugged it in and unplugged it a couple times to see if it would make a...