ZR-1 Net Registry Forums - View Single Post - 91 ZR-1 Cutting Out Under Load

GregCrowe · 09-03-2006

Finally got a chance to work on the beast again. I pulled the fuel filter out and it had come apart, it rattled. That gave me some hope but I could still easily blow thru it. I put the new filter on and still had the same fuel pressure reading. Went out for a drive, same problem, stutters under acceleration. I recorded my O2 sensor readings and they appear to be just fine. Under full throttle acceleration the O2 readings are:

Left: .84 - .87
Right: .85 - .88

I'm now officially stumped. With the fuel filter coming apart, I wonder if a bunch of crap got into the injectors ??? When I undid the fuel lines and pulled them away from the original filter, I put a bowl under the lines to catch the fuel. The bowl got a bunch of dark particles in it. I wonder if some of that stuff made it into the injectors??? You would think however if the injectors were clogged up, the O2 readings at full throttle would go lean while stumbling.

I don't know, officially stumped now.

09-03-2006	#26
GregCrowe Join Date: Sep 2004 Location: Oklahoma Posts: 111	Re: 91 ZR-1 Cutting Out Under Load Finally got a chance to work on the beast again. I pulled the fuel filter out and it had come apart, it rattled. That gave me some hope but I could still easily blow thru it. I put the new filter on and still had the same fuel pressure reading. Went out for a drive, same problem, stutters under acceleration. I recorded my O2 sensor readings and they appear to be just fine. Under full throttle acceleration the O2 readings are: Left: .84 - .87 Right: .85 - .88 I'm now officially stumped. With the fuel filter coming apart, I wonder if a bunch of crap got into the injectors ??? When I undid the fuel lines and pulled them away from the original filter, I put a bowl under the lines to catch the fuel. The bowl got a bunch of dark particles in it. I wonder if some of that stuff made it into the injectors??? You would think however if the injectors were clogged up, the O2 readings at full throttle would go lean while stumbling. I don't know, officially stumped now.