Glow Plug Time
I was in a similar position a month ago, my check engine light, which had been 'intermittent' (on for a few weeks, off for a few weeks) for a long time became 'permanent', more importantly the 'wait to start' light would stay on 'forever' or until I actually started the engine. I have never been able to retrieve codes from my truck (yes, looked for a bad fuse), so I didn't know which glow plugs to change but as more than one person on here said "Do you change just one spark plug on a gas engine?" So I bought a set of plugs and set out to change them. I didn't spray them with penetrating oil in advance because I couldn't get to them until I had the inner fender wells out and was too lazy to remove and replace them ahead of time, I was also reluctant to drive with them out (although if it didn't involve lots of rain, it probably would be OK, let's say that I am a bit gun shy about flooding an engine after a rental Charger died). I did follow the advice about running the engine 10-15 minutes to warm it before changing the plugs and I did spray on some oil at that time but looking at the threads after removal, can't say that it helped. I am not a mechanic but am pretty mechanically inclined, no one would ever pay me to do that work because I am so slow .... they'd go broke. It took me two hours to change all 8 glow plugs, I did use almost every 1/4" drive implement I own (nothing was so tight as to need 3/8" drive), mostly for the ones on the driver's side. I had to start the truck about a dozen times after I was done to 'clear' the CEL. All in all a successful day. Maybe some day I can figure out why I can't get a scanner to read anything on my truck but for now, life is good!
2007 Silverado Classic LBZ CC/LB 4x4 LT3 Air bags Cap
There are few problems that cannot be solved with the right quantity of explosives!