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OldSuperSport · 04-20-2005, 12:45 PM

I drove the truck to work today and it doesnt have the hill climbing power it did before the head rebuild. I am sure this is a computer/sensor problem and not a cylinder head problem. I was seeing real noticable power improvments before I set the timing "by the book" to 0 degrees. I had set it manually to beyond the timing marks at that time(12-14 degrees?), with no noticable pinging. Now the timing at idle set by the computer is just off the scale. I can move the timing up but hesitate to do this.

Thanks for the info about the gauge temp sensor and the other one on the intake. I will get under the truck and look at the O2 this afternoon, and then try some propane to the base of the TBI to look for a vac leaks there, and ground wires will be checked again.

04-20-2005, 12:45 PM	#8
OldSuperSport Registered User Join Date: Apr 2005 Location: Akron, Ohio Posts: 13	I drove the truck to work today and it doesnt have the hill climbing power it did before the head rebuild. I am sure this is a computer/sensor problem and not a cylinder head problem. I was seeing real noticable power improvments before I set the timing "by the book" to 0 degrees. I had set it manually to beyond the timing marks at that time(12-14 degrees?), with no noticable pinging. Now the timing at idle set by the computer is just off the scale. I can move the timing up but hesitate to do this. Thanks for the info about the gauge temp sensor and the other one on the intake. I will get under the truck and look at the O2 this afternoon, and then try some propane to the base of the TBI to look for a vac leaks there, and ground wires will be checked again.