[hatzie]

I re-read some threads on the Dieselpage about the HPCA system...

Since it's getting balky about starting at higher ambient temps I would replace the HPCA thermal switch when you do the glow plugs. It's a dealer only part or it was the last time I bought one. Tell the counter goon you have an 1988 Chevy Suburban 3/4 ton 4x4 with the 6.2 and you need the cold advance switch.

Robyn says to just leave the inhibit function of the glow controller unhooked and I respect her opinions. My 6.5L engines work just fine with it hooked up but they are also fairly youthful engines both being under 110,000 miles.

It's worth noting that you can usually retrieve a broken glow plug tip through the injector hole. Stuff a paper towel down under the tip to catch the pieces and vacuum out the pre-chamber before you re-assemble things with a new injector heat shield. Not a pleasant job but better than pulling the cylinder head.