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Re: 6.5 GM hard start
Posted to HD/Fleet Forum on 5/2/2011 2 Replies

Hi Jimmy, Since you have smoke, there is fuel but is it in the correct quantity, at the right time, with the proper in-cylinder heat?

Start your testing with cranking RPM, Anything under 150 RPM is too slow. With a current probe, test the glow plug current. ... Login to read more.

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