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sdilecce · 07-28-2016, 12:46 AM

My 1980 C10 250 inline 6 wouldn't idle without stalling. I suspected a bad egr valve, but when I priced out a new one couldn't believe the cost. So I tested the vacuum valve with a hand pump and it was ok. Then I removed the EGR and fount that even when it was closed I could blow air through it. I tried cleaning it but no luck. So I traced the EGR' bolt holes on a small piece of flat steel and drilled them out. Cut a gasket out of gasket paper, and bolted it on in place of the EGR valve. Then I plugged the vacuum line, and now the truck idles again and it didnt cost me a thing.

07-28-2016, 12:46 AM	#2
sdilecce Registered User Join Date: Aug 2014 Location: Saskatchewan Posts: 6	Re: EGR differences My 1980 C10 250 inline 6 wouldn't idle without stalling. I suspected a bad egr valve, but when I priced out a new one couldn't believe the cost. So I tested the vacuum valve with a hand pump and it was ok. Then I removed the EGR and fount that even when it was closed I could blow air through it. I tried cleaning it but no luck. So I traced the EGR' bolt holes on a small piece of flat steel and drilled them out. Cut a gasket out of gasket paper, and bolted it on in place of the EGR valve. Then I plugged the vacuum line, and now the truck idles again and it didnt cost me a thing.