I think I've got this one figured out, but thought y'all might enjoy my misery...

Early this year my 94Z started running rough, and I noticed a puddle under the car. A quick sniff revealed the puddle as raw gas. Dripping out the exhaust at the Y-pipe. Uggh. I pulled the exhaust (dumped fuel out), did some basic looking at the ignition system, saw that the oil level had increased (uggh), got pissed and walked away from the car for 6-8 months or so (I've had this car for almost 25 years, so not talking to her for 6-8 months is kinda normal for me). Lucky the dang car didn't catch fire.

Today I finally worked up the desire to get the car moving again (at least off the lift). Troubleshooting revealed that my Aeromotive FPR (vintage 2001 or so; it's a narrow-body LT1 direct fit - I can't even find a picture of one online) had failed. Diaphragm is cracked, o rings are cracked, I guess just under 20 years is a long enough time. Ha. Sure is a nice looking paperweight now (can't even order a diaphragm for it).

During my troubleshooting today I put the fuel pressure gauge on and tried priming the car. No pressure. Nothing. So I disconnected the fuel rails and stuck the lines in a gas can. Nothing. Pump was spinning, I could hear gas in the tank. Disconnected at the fuel filter. Gas drained out, but when I tried priming, nothing but noise in the tank. Guessing that the line connecting the pump to the outlet is gone. So the tank's gotta drop (I'm not cutting a hole in the convertible area, just not my thing). That's a dirty, nasty, long job that I've done before and did not enjoy, but I'm too hard-headed to cut the hole.

After AFPR research today, I decided I don't like any of them - done with Aeromotive, and the Holley is over 200 bucks. I ordered a stock replacement FPR for about 40 bucks... (I don't race the car, heck, I barely drive it). And since I'm pulling the tank, even though the Walbro that I installed in ~2001 is still working, I've ordered the Racetronix kit with wiring as a replacement. I can't remember if I modified my stock fuel pump basket to fit the GSS340, but I think I did. Hopefully the Racetronix will work with that.

If only it wasn't so dang hot outside... would make working on the car a lot easier.

 

Our kit with FPA-001 MUST be used with a factory original module that has NOT been modified.

 

Thanks for the reply. Guess I'll see once I drop the tank, and get a used one somewhere if need be.

 

WS6 Store has new modules.

 

I ordered the Racetronix setup from them, I'll keep that in mind. Thanks.

 

It looks like the only mod to the stock housing was cracking it open to install the old pump. Looks like I can use it after cleaning it up. Glad I dropped the tank, it's got bits of rubber all in it and needs to be cleaned. I think the picture of the old pump output line says it all... (it was no longer connected to the pump).

 

Ugh! That was the first thing I saw! That needed to be replaced bad, it was just going to cause issues further upline eventually.

 

Still at it eh, Again the good ole LT's comes alive to haunt you, My now have a whopping 20 miles on my turbo set up I built 8 years ago! How ya been?

 

Just remember you cant use regular fuel injection fuel hose for in the tank, it will eventually disintegrate, You need a specific hose for that, NAPA has it for $35 for one foot.

 

Hey Moe! I still got a 5 grand check with your name on it, just bring Christine on up here, I'll take care of 'er... (just kidding, I can barely keep my fleet in tires these days with the kids having cars now).

My car is about like yours. Inspection went out in 2017. Got a bad brand-new a/c compressor that caused me fits until I figured that out, but still haven't fixed the a/c on the car yet. Then the car died with the fuel system issues. That hose you see there was included with the Walbro pump that I installed a long time ago. I think I installed it before I moved to Waco (yeah, that long ago, moved in 2002). Still working on a PhD and that takes 99% of the time I used to spend on cars.

I have the Racetronix kit and it includes the outlet and return lines in corrugated plastic fuel hose, but I need to do something about the basket drain line that goes to the top of the sending unit assembly. I ordered a piece of hose from Amazon that might work (it is worth a try), but may have to fumble around for something else if it doesn't.

 

I keep smashing her with a sledge hammer, but every time I wake up the next day, She rebuilt herself again! Hold on to that check cause one of these daze..........................

 

So I need a "pump inlet seal" for the racetronix pump. It didn't include one, and I don't have one (a 25 year old seal would not have been good anyway). Is there a gas-compatible seal or o-ring I can get somewhere (buna-n kind of thing)?

Edit: rather than spin the wheel and try my luck with an o-ring, I've ordered a short section of teflon bar stock and I'll just turn a ring on the lathe. Don't have to worry about it dissolving in fuel, and I can make it fit the housing exactly.

 

Short update: the four month+ fuel pump replacement project is now at an end. Racetronix kit (pump and wiring) spun up immediately, new fuel pressure regulator ran at 43 psi, bleed-down was about 1 psi/minute when pump power removed, no leaks, so I fired it up today and the car ran nicely. I did fab a teflon o-ring for the bottom of the pump to housing connection. That seemed to work fine. Drove the convertible around with the top down, nice weather today here in central Texas. Only passed one State Trooper with my (2017) expired tags.

 

Glad you got it running again. Working on a vert, and then test driving it upon completion with the top down in nice weather makes it all worth it...