1990 ZR-1 Issues - ZR-1 Net Registry Forums

frantinoro · 09-25-2019

Hello,
I got my zr-1 and it never ran right, but after sitting for a few months it's a lot worse. It misfires out the left bank, smells lean, and genuinely runs horribly. Before I parked it I put in new injectors, coils, plugs, and plug wires, so I can't tell much from the plugs, but they look fine. I resealed the IH and all the vacuum lines for the secondaries, and when jumpering them they work as they should. My only issue I've found so far is I'm only getting 38 psi at idle, and 35 at wot. Both pumps are suburban pumps and new, new o2s as well, and both pumps work when jumpered. I contacted Phil who rebuilds the FPRs and he doesn't think it's my fpr because it doesn't leak. Does anyone else have anything I can test? Thanks again

09-25-2019	#1
frantinoro Join Date: Dec 2018 Location: Long Beach, CA Posts: 73	1990 ZR-1 Issues Hello, I got my zr-1 and it never ran right, but after sitting for a few months it's a lot worse. It misfires out the left bank, smells lean, and genuinely runs horribly. Before I parked it I put in new injectors, coils, plugs, and plug wires, so I can't tell much from the plugs, but they look fine. I resealed the IH and all the vacuum lines for the secondaries, and when jumpering them they work as they should. My only issue I've found so far is I'm only getting 38 psi at idle, and 35 at wot. Both pumps are suburban pumps and new, new o2s as well, and both pumps work when jumpered. I contacted Phil who rebuilds the FPRs and he doesn't think it's my fpr because it doesn't leak. Does anyone else have anything I can test? Thanks again