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geezer#99 · 07-28-2013, 05:55 PM

Advance your timing to 14-16 degrees, then slow your idle down. Shouldn't be that big a drop. Maybe 150 rpm at the most.

07-28-2013, 05:55 PM	#3
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,787	Re: Truck idles high in park/neutral Advance your timing to 14-16 degrees, then slow your idle down. Shouldn't be that big a drop. Maybe 150 rpm at the most.