Hi and good day,

I prepared this with a good effort:

1. Read both Chilton's and Hane's manuals
2. Read tech boards on F-body sites regarding fuel filter replacement
3. Tried/ did everything everybody said.

But did not succeed.

Fuel line kept on leaking...about 1 gallon before I called it quits. Leaked like after a good beer...

What I did:

1. Relieve fuel pressure to avoid spillage /prolong leakage

2. My fuse box has 2 fuses with FP (fuel pump) inscribed. Took them out before starting the engine, like they said. Unscrewed fuel cap. Started the engine. Ran a few minutes. Never stopped:

- 1 20 amp fuse with FP/Fan inscribed (took it out)

- 1 10 amp fuse with Inj. 2 /FP inscribed (took it out)

3. In another try, did what a guy said to take out the fuse contained in the black sleeve located just facing the battery and pinned clearly on the fender/side (passenger). Of course, this turned off the engine. But did not stop the leak.

4. Put on back fuel cap. Did not work to stop leakage.

5. Took out, also, to test, 10 amp fuse inscribed inj. 1: stopped the engine /didn't stop the leakage

6. Mine's got an in-line type filter (round stainless steel housing)

Please speak out / Thanks
'88 coupe 305 TBI Camaro

p.s. I screwed back the nut on the old filter and runs good/ doesn't leak. But I still want to change the filter...

 

Sounds like you have the same filter most of us have. When you took out the old filter, did you remove 2 o rings, one from each side? If not look for them in the nut area of the fuel lines. If you did, did you put new ones in? I replaced a filter that leaked till I put new ones in.

 

I didn't see/touch the O-rings. I just loosened 1 nut, driver's side of the filter. The old filter is not broken/ doesn't leak. Just want to replace it. Almost no rust on my filter. No winters/road salt : ). I heard of 3 wires near the rear axle that might help....

I want to change the filter with almost no gas leakage, that's all. I have to relieve pressure in fuel line so that leakage stops, at least most. I think you know the story...thanks.

 

Look underneath the rear of the car...right up over the back axle and you'll see a three pronged electrical plug. Take out the "locking" pin and disconnect it. Turn the engine over a few times and your done. Pressure relieved.

 

Ok Brit Iroc, I'll try that . Sounds good. Keeping you up to date soon

 

Not sure what that will do if you relieve the pressure. When you run the car again, the pressure will come on. I may have confused it but shouldn't there be some sort of oO-ring or copper washer?

 

In a previous thread it was mentioned to diconnect the quick disconnect at the fuel pump. It is up above the rear axle. Start engine let it run until it runs out of gas and dies. Took about a minute or two for me. Then loosen the nuts on filter let the remaining gas drip out. I use a cat litter box to collect the gas, not a whole lot came out. Remove and replace filter. Reconnect fuel pump wire and you should be good to go.

 

do what i did. just put a pale underneath the filter crack the nut thatll relieve the pressure. let it leak out then swap it over on the fly. no big deal

 

Almost everybody's pointing out these wires. The O-rings are there and must be examined if still good. Change if necessary.

This should do it:

1. I'll disconnect the 3 wires
1a. Unscrew gas cap
2. Run the engine 'till it dies. Crank it again a bit to be sure.
3. Go under and unscrew nuts and expect little leakage. Then change filter...

Thanks and keeping you up to date

 

Update:

Hi, I unplugged the 3 wire harness situated right up the rear axle. Easy, take out plastic locking pin, then pull out the sleeve/harness. I unplugged it twice: once with motor NOT running, cranked the motor twice, didn't start. And once with motor running, pulled it out, instantly stopped motor. On both circumstances, it was suppose to stop the motor but after a delay only. To let the fuel run out. Anway, I went under, unscrewed one nut and fuel, after a short time, came out and leaked and leaked. I let it leak a good 5 minute but the flow did not diminish. At that time, there was about 24 oz. So I thought, this is not working.

Finally, I re-tried drying up the line by pulling out the 2 fuses with FP (fuel pump) on them and started the motor and let it ran a good 6 - 9 minutes. But motor didn't stop. It seems the TBI has 2 injectors. Each of them has a separate fuse. But one of them is linked (injector #2) with the FP. The other fuse for the FP is linked with the fan. Anyway, it seems injector 1 gets fuel mechanically or not with the fuel pump aid because all FP fuses were pulled out and motor kept on running pretty good considering only one injector was on and the FP out. Go figure???????? Maybe a mechanical engineer/good mechanic can explain this one to us.

On all tries, I unscrewed th gas cap.

Even with gravity, I still think it's not normal that all this leakage is happenig. Maybe syphoning causes this leakage, if it exists it means that pressure is still in there, the exact thing I'm trying to take out.

So, here I am, with the old filter still in place, working well and not leaking...Thanks and other replies welcomed

 

About the only thing I can tell you on the leakage is get your new one ready real fast!!! Just kidding. I have always changed mine without pulling fuses and such. Its normal for there to be some leakage but usually it does stop. Just put a catch pan under it and go for it.

HTH
Chris