Valve float 2006 GTO
#1
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Valve float 2006 GTO
I own a 2006 GTO LS2 with 104,000 miles. The car is near mint condition and runs well. I was told I have valve float from around 4,000 RPM to 6,000 RPM. Yes I can feel it nose over. Is this a common problem with high mileage LS2 engines ? If so how much to change out stock springs ?
#2
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I own a 2006 GTO LS2 with 104,000 miles. The car is near mint condition and runs well. I was told I have valve float from around 4,000 RPM to 6,000 RPM. Yes I can feel it nose over. Is this a common problem with high mileage LS2 engines ? If so how much to change out stock springs ?
#5
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Try this first. Put a mechanical pressure gauge on the fuel rail shcrader valve. It should read 60 lbs at idle and drop to no less 56-58 lbs under WOT. If it drops to say 50 or 40, the motor will roll over above 4000 rpms. There is a fuel filter also. It is in the tank and inside the fuel canister. It is mesh and designed to screen out larger particles. If the pressure drops off, its probably the fuel pump.
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Thanks for all your responses. I recently spoke with a very good LS tech. He said he has been having problems when his customers use certain fuels like Shell which I have been using. He suggested that I first burn through that fuel and use either BP or Sunoco for a few tanks of fuel. If the problem still persists he will look at the car for me. Again thanks guys.
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#8
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Thanks for all your responses. I recently spoke with a very good LS tech. He said he has been having problems when his customers use certain fuels like Shell which I have been using. He suggested that I first burn through that fuel and use either BP or Sunoco for a few tanks of fuel. If the problem still persists he will look at the car for me. Again thanks guys.