my q keeps crankin but not starting

[killa_cam_81]

ok i hope someone can help me out, i have a 94 q45t and am absolutely in love with it. about a month ago it started acting really sluggish when i would take off from a light and progressively has gotten worse. i was on the i-5 about three weeks ago and was only able to do about 50mph and heard a weird almost backfiring like sound. i changed the plugs (ngk) cleaned the maf but still no change. now it really gets bad i jump in the q to take a ride and it wont even start, it just continuously turns over. i changed the fp even though i thought the old one was fine.......no change, i did the little gator clip trick to the fpcu....... still no change. i am ready to jump off a building and am getting very little sleep.......some one please help me get my baby back......as of right now i am confined to riding my gsxr-600 every where or driving the wifes minivan ...... i hate minivans

[killa_cam_81]

i even took the fuel filter off and cranked with it not in place expecting a spray of gas but nothing, just some gas hangin out in the supply line looking up at me

[nissangirl74]

fuel pump is shot

[killa_cam_81]

both of them

[AZhitman]

Not good news, I'm afraid.

Went through the exact same symptoms with mine, and it was a dropped valve.

Run a compression test, but I think your engine is done.

[killa_cam_81]

i sprayed a lil gas in the intake and it turned over so i dont think my engine is done

[omarb45]

read my post about c.l.r in tank... fuse ..relay..fuel pump

[Infinitiguy19]

Not good news, I'm afraid.

Went through the exact same symptoms with mine, and it was a dropped valve.

Run a compression test, but I think your engine is done.

From what I hear compression tests are easy to do but sometimes are wrong, So I would recomend a leak down test.

i sprayed a lil gas in the intake and it turned over so i dont think my engine is done

When you grounded the fuel pump did you ground it to an unpainted sureface on the car?

My bet is fuel pump controller, I think 3QJay rebuilds them so try him.

Might be worth checking the ECU for codes to rule anything else out.

[elwesso]

its kind of hard to find a good place to ground the FPCU back there.. I use one of the screws that holds the speaker in place.

Clearly you're not getting any gas and the FPCU is likely shot, like Paul said..

[Infinitiguy19]

its kind of hard to find a good place to ground the FPCU back there.. I use one of the screws that holds the speaker in place.

Not really just look at the parcel shelf (Sun deck) AKA where the truck screws into, you should find a hole there. Once you do just sand the paint off or hopefully its free of paint already. Worst case senario you have to drill a hole or use a sheet metal (Self tap) screw.

[goody90q45]

.....Clearly you're not getting any gas and the FPCU is likely shot, like Paul said..

The break in a fuse can be hard to see. Take a closer look at the fuel pump fuse either with a magnifying glass or by measuring continuity with a volt meter. Is the fuse in the correct slot in the fuse block?