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Hozer 88GTConv · 04-22-2004, 09:34 AM

I still have too much fuel getting into one cylinder. The plug is flaky, sooty, and black. The electrode is chipped too.

I have rebuilt the heads and it's not oil. It is definitely fuel and I know I'm running rich to boot.

It's not a leaky injector, unless they all leak, because I have swapped them several times.

So, I'm left with the possibility of a malfunctioning electrical harness, or an O2 sensor problem, or both.

I am going to torch-clean the O2's and check the readings with a meter as they heat up.

I have no idea how to test an injector harness.

Any ideas?

04-22-2004, 09:34 AM	#1
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Testing fuel injector harness... I still have too much fuel getting into one cylinder. The plug is flaky, sooty, and black. The electrode is chipped too. I have rebuilt the heads and it's not oil. It is definitely fuel and I know I'm running rich to boot. It's not a leaky injector, unless they all leak, because I have swapped them several times. So, I'm left with the possibility of a malfunctioning electrical harness, or an O2 sensor problem, or both. I am going to torch-clean the O2's and check the readings with a meter as they heat up. I have no idea how to test an injector harness. Any ideas? __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy