cold start rough

[eembry]

I have a '92 with a 6.5 it has started running rough when first starting if it is cold. If I plug it in it's fine otherwise it runs rough for a few seconds and smokes excessively. Any ideas? I really enjoy all the tips found on this site!By the way it has 126,000 on it. Thanks, Eddie

[Hubert]

Eddie,

Not knowing anything else its probably glow plugs are getting tired and a few bad. You can test them with a test light and test restistance of them too.

Battery + to unplugged spade on GP if light comes on circuit ok. Test resistance from spade to GP body or engine block there is a spec but I can't can't ever remember it

It could be other stuff too being a '92 so test them and ask more questions if they pass test.

Should consider new injectors if doing new GP's.

[eembry]

Thanks for the info Hubert I have new glow plugs and injectors ordered they should be here sometime this week. Will see if this helps if not I'll be back!

[ronniejoe]

Yep, glow plugs are the likely culprit.