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95 S_Trucker · 06-27-2017, 08:03 PM

I usually jump the starter relay. That way there is no spark or injector pulse. Hold the throttle wide open.

Minimum spec from gm is 100psi. Gm allows 20% variation. But the closer the better.

06-27-2017, 08:03 PM	#6
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,179	Re: 1999 K1500 Suburban Mis-fire I usually jump the starter relay. That way there is no spark or injector pulse. Hold the throttle wide open. Minimum spec from gm is 100psi. Gm allows 20% variation. But the closer the better.