Gen 1 Fuel Pressure Leakdown hard starting

[JonB ~ PartsRack]

Common problem for decades....Ive advised hundreds of G1 owners over the years they have to 'prime' the key several times to build pressure to start the car. Otherwise it cranks and cranks, zero oil pressure, bad for engine. A Failed oem fuel pressure regulator on the top of the fuel pump is to blame.

Hard starting is because this regulator fails and allows the fuel to run back into the tank after car is turned off. NO pressure regulators or parts were available past 12+ years.....Until Now !


PartsRack as come across a small supply of the OE G 1 pressure regulators that install right into the OE fuel pump module. "Drop In" part. But it is a large job to replace.

If you have been annoyed by this 'priming to start' issue, we can help a handful of G1 owners....even if you dont install it right away, nice to have to maintain resale value if car has this issue.

Email me: JonB@PartsRack.com

[MacGyvers Mullet]

Jon,

Is this a known problem on Gen 2's? I ask because a couple of days ago, the car had this exact same problem. It cranked for a few seconds without starting. I stopped cranking, waited a couple of seconds and on the second try it fired right up. This never happened before and may have been an odd isolated incident. Otherwise, it starts up immediately. It just caught me off guard and had my mind running for possible problems. 96 GTS.

[Coloviper]

It is as well on the early Gen 2s.

Jon, I am interested in the regulator for my 96 RT/10. If that is in your supply, I could take one. Thank you
Rick

[whitebluevipe]

I have interest.

[Black94rt/10]

What is involved with the replacement process? I feel like sometimes this happens to me. But if i have to rip the whole car apart the juice may not be worth the squeeze (for me anyway)

[slitherv10]

I sold one of my 96 GTS's a few years back and that one always started on the second try. Now i know why. My other one starts perfect. Maybe i should think ahead of the box and get one incase.

[Matt M, Pa]

IF I understand correctly in an RT, you need to drill out the rivits that retain a close out panel in the trunk. It's the vertical panel behind at the back (closest to the seats) of the trunk looking from the opening. Once the panel is removed..the fuel pump is visible through the opening. I would assume there is some sort of sealant, too.

Perhaps someone can correct me if I'm wrong.

[SNKEBIT]

You drill out the rivets. Disconnect the filler tube from the fender after you remove the right wheel well liner. Unbolt the strap/straps that hold the gas tank in there. You should unfasten the fuel and return line from the fuel filter area also. This gives slack so you can pull the tank out into the trunk. Then unscrew to fuel pump module so you can do this on a bench. The fpr is not really easy to remove, the rubber holding it in there is pretty stout. You also need to remove the hard plastic fuel line from the fuel pump, which isn't overly easy. This job is not for the occasional mechanic. lol
Also, the 96 rt might have a different fpr as this is an odd engine combo. (gen 1&2 hybrid) I know gen 2 is totally different.

[Viper Red]

I definitely have this issue on my 93. Email heading your way Jon.

[Coloviper]

You drill out the rivets. Disconnect the filler tube from the fender after you remove the right wheel well liner. Unbolt the strap/straps that hold the gas tank in there. You should unfasten the fuel and return line from the fuel filter area also. This gives slack so you can pull the tank out into the trunk. Then unscrew to fuel pump module so you can do this on a bench. The fpr is not really easy to remove, the rubber holding it in there is pretty stout. You also need to remove the hard plastic fuel line from the fuel pump, which isn't overly easy. This job is not for the occasional mechanic. lol
Also, the 96 rt might have a different fpr as this is an odd engine combo. (gen 1&2 hybrid) I know gen 2 is totally different.

96 RT/10 is a one year only Fuel Pressure Regulator (FPR) set-up which is a combined GEN1 and GEN2 frankenpump. However the Fuel Check Valve (FCV) (which is what is failing here) should be the same as a GEN 1 or a GEN 2 or is it unique as well? Anyway know the flow/pressure differences between the GEN 1, GEN1.5 and GEN2 FCVs? Which ones do you have Jon. I would call you but you know, it is Monday and after all these years, you have conditioned me to not call on a Monday. Ha! Ha!