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Today after driving to the store when I was leaving the car was slow to start and when it did it was sputtering terribly, I smelled gas too.
I parked it and found nothing loose or grounded plug wires. I put a fuel pressure gauge on it and it pressurized to 52psi when running and dropped back to 0 in ~5 seconds. I saw a dribble of gas on one of the 1/8 in plastic lines at the front of the engine.
1986 Aluminum heads
I think I changed the FPR ~ a few years back when something similar happened.
Definitely a bad FPR. I just changed this in 2014 ... doesn't make sense but I've heard others have had issues with the FPR not lasting. $75 just for the diaphragm ... looks to be worth ~ $15 ... OH well corvette tax!
Last edited by 3D-Aircrew; 03-10-2018 at 12:18 PM.
Reason: add
Needs a torx 10 with the security hole. Move the spark plug wires and vacuum hoses in the area to make room. Use a 1/4 " wrench and some tape to hold the torx bit. Looks impossible but you can just barely get the thing on all the screws with room to turn 1/6 turn The deepest one under the plenum is the most PITA.
Advance Autoparts lost my new part ... might have to wait till Monday to get another.
Last edited by 3D-Aircrew; 03-11-2018 at 02:03 PM.
Reason: corrected
OK - I only recommend doing this repair the way I did it if you are not comfortable removing the plenum to get the FPR out. Using a torx-10 security bit and an 1/4" wrench you can laboriously install one without removing the plenum ... I mean 2 hours to remove and 2 hours to put back on. I'm a cheapskate and didn't want to have to buy seals for the plenum. Started 1st crank runs smooth now.
03-07-2018, 05:29 PM
Suddenly running bad, sputtering barely idles
