ok heres the story

6:00 a.m. i just finished installing rear end, took car for a drive, everything was fine.
12:00p.m. it started up fine, around 2:00, i put on a new brake caliper, and bled the brakes, when i was done(20 minutes) i tried to start the car, and it wouldnt start, no fuel pressure at the rail, no pump buzz when key was turned on.
so i let it sit for a while, maybe an hour. tried it again, and nothing (crank but no start) jacked it up in the back and checked to make sure i didnt knock any of the fuel pump wires loose when i installed rear end this yesterday/this morning. everything was fine.so i check fuel pressure and its at zero.
I let the car sit for 30 minutes, i try to start it, and now i have fuel pressure and pump buzz when keys on. car starts up fine. so i take car out for a ride,get gas, shut off car, starts fine. maybe 30 minutes, come home shut car off, go get some stuff from the garage, come back car wont start. i let it sit for roughly an hour, come back start it up , and it starts fine.

So can anyone tell me what exactly is going on here? is this the sign of a dying fuel pump?

Also if this fuel pump is in need of replacement, a previous owner, cut a hole above the fuel pump, but didnt go through with replacement, instead he dropped tank, etc.

so the hole is there, the only thing i will need to do is cut the fuel lines, change pump etc. and reconnect fuel lines.

What would be better to reconnect the lines? high pressure fuel injection hose? or compression fittings?

i have already made a new cover from the same panel from another thirdgen to fasten over the hole. so sealing etc. is not an issue.

i am sorry for the long post, but im trying to be as detailed as i can.

anyone who has the replaced the pump via this method please chime in.

are there any problems/pitfalls to look out for, mistakes not to make.

any info will be greatly appreciated
thanks,
Matt

 

i'd drop the tank and do it right, you're just asking for more problems

 

im not going to drop the tank, the hole is already there, and i dont have the time or the place to do it. Im just trying to get some opinions on what will be the safest method of reconnecting the fuel lines.

heres a pic of someone elses just so u have a better idea of what im talking about, they used rubber hose and clamps.

 

AN unions and flare the lines, also use tube sleeves to reinforce the flares. If its good enough for 3000 PSI hydraulic systems then I think a 50 PSI fuel system will be ok.

Sounds more like it might be the FP relay though.

 

That sounds exactly like what mine did, and it was the fuel pump.

i would hook up a test light (pin thru the wire) to the fuel pump connector on the tank. If the test light works, but you don't hear the fuel pump prime with the key ON, then that pretty much tells you it's the fuel pump since it's getting power.

That's what i did to be sure.

JT

 

i hooked a test light up to the wires, and when i turned the key on, the light lit up but the pump didnt come on. so i knew what i had to do,
i cut the lines with a hacksaw blade, then i used high pressure fuel injection hose and clamps (it says its good for 100 psi working pressure and 500 psi burst strength) and since the cut i made was only as thick as the hacksaw blade, i was able to slide the hose on, and then push the ends of the line together inside the hose. then i clamped it down. i just finished up about 25 minutes ago, and so far everything is fine. hopefully it will stay that way.

thanks for the replys, and if anyone has any questions feel free to ask.

Matt

 

Cool. Good to hear. Atleast this isn't the view you had to see.

A friend and i replaced mine the hard way.

JT