Runs rough and smokes on cold start

[ghunt]

Just wondering- I wired my GP's up to a pushbutton switch a couple months ago because my GP controller was acting like it was on the fritz.

On cold starts, even if the truck's been plugged in for three hours and I glow it for 15 seconds, it runs rough on initial startup and blows a bunch of blue smoke. If I kick it into high idle (or just raise the idle manually for a few seconds) it smooths out and the smoke goes away.

Why does it blow all the blue smoke, is it like that because I have a dead glow plug?

 

[dyoung14]

Just wondering- I wired my GP's up to a pushbutton switch a couple months ago because my GP controller was acting like it was on the fritz.

On cold starts, even if the truck's been plugged in for three hours and I glow it for 15 seconds, it runs rough on initial startup and blows a bunch of blue smoke. If I kick it into high idle (or just raise the idle manually for a few seconds) it smooths out and the smoke goes away.

Why does it blow all the blue smoke, is it like that because I have a dead glow plug?

mine does it too, but i know for a fact that i have a few bad glow plugs. but mine always fires right up just runs a little ruff for a few seconds, you could have an injector problem