1999 GMC Yukon 5.7L V8 tdc problem
Asked by Quatie Sep 05, 2018 at 12:42 AM about the 1999 GMC Yukon SLT
Question type: Maintenance & Repair
No results found for "my 1999 GMC Yukon 5.7L v8,i got fire to the plug wires
its not throwing any codes i set the mark on the harmonic balancer and it
wasn't tdc then i put a compression tester on #1and spun it over till read 155
lbs and thats tdc and the mark on the harmonic balancer does not line up
with the true tdc and it has 55lbs of fuel pressure so if anybody can help me i
would greatly appreciate it."
7 Answers
thank you for the reply tennisshoes, i just have a question about spraying starting directly into the spider injector, i heard that if you did that it would catch fire, is the dampner fine where its at or do i need to replace it right away
Ok I will give it a try and i will let you know how it goes
I used the ether and it started it just back fired so i am thinking that may be my spider injectors
sorry to keep bothering you but what is the best way to check power supply from the ECM
i unplugged the injectors and noticed that few of the pink wires were discolored i cut back the tape from loom to have a look and noticed the wires in spots were discolored. The spots were hard and i couldn't bend them. i tested the plug itself at the pins with a light tester and was getting power, i had someone cranking it and the light stayed solid. What would you suggest?
ok i will try that out and i will let you know how it goes. Thanks again you are big help
I just took the ECM out and took it apart, it smelled burnt and there were bare wires at the crank sensor.
