6.5 turbo diesel hard starting
My SIL's '93 GMC has a new 6.5 turbo diesel in it. The engine runs perfect once it starts but if it's left sitting over night it often requires a lot of cranking and blowing white smoke before it star...
Forum Discussion
"To check the glow plugs can I unplug them and measure the resistance to ground? What should it be? "
All I have done to check glow plugs is unplug and use a test light by attaching alligator clip to positive side of battery and touch the spade on the end of the glow plug. If the test light glows it's GOOD. If it does NOT light it's BAD plain and simple.
Glow plugs are a major PITA!!! They don't seem to last very long on the 6.2/6.5 engines.
If you have a fuel filter like pictured below with a primer button hit it before starting and see what happens.
Lift pump may be the problem if the primer method works.
All I have done to check glow plugs is unplug and use a test light by attaching alligator clip to positive side of battery and touch the spade on the end of the glow plug. If the test light glows it's GOOD. If it does NOT light it's BAD plain and simple.
Glow plugs are a major PITA!!! They don't seem to last very long on the 6.2/6.5 engines.
If you have a fuel filter like pictured below with a primer button hit it before starting and see what happens.
Lift pump may be the problem if the primer method works.
