Glow Plugs
Last year my check engine light went on. Went to dealer and was told I had a bad glow plug but it was not necessary to fix it right away and when I did I should just do all 8 since if I had one bad o...
Forum Discussion
DiskDoctr wrote:Turtle n Peeps wrote:
Sorry but a burnt out glow plug does not swell like has been reported by a few on here.
That being said, I'm not an expert on Duramax, either.
At a MINIMUM, if pulling the cover to replace ONE glow plug, I would ABSOLUTELY replace all the ones on that side. Is it necessary to pay (DIY time or service labor) to remove the other valve cover to replace them...it depends. I probably would, since I usually DIY. If it wasn't too much in service labor, I'd have it done, too.
LOL, I can tell. ;) There is no glow plugs under valve covers for the LBZ (the engine the OP and I have) They are out in the open just like a sparkplug is on a gasoline engine. Instead of a sparkplug boot it has a small wire and a nut to hold the wire on. Then it's just a matter of unscrewing the thing just like a sparkplug. (Pretty easy job unless you keep on dropping the nut. :o )
The OP asked if a burnt out, non operating or whatever you want to call it glow plug would hurt the engine if left in place. The bottom line is; NO.
