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Old 12-02-2020, 09:23 PM   #47
1976gmc20
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Join Date: May 2015
Location: Montana
Posts: 3,696
Re: 86 Scottsdale - No start

Quote:
Originally Posted by BAChevyMan View Post
Well thanks to everyone that threw in their 2 cents to help my no start... my conclusion is low compression because of washed cylinders. I only got compression on 2 cylinders before my compression tester stopped holding pressure. Gonna see if replacing the Schrader valve in the tester. Plugs smelled fuel fouled this time when I pulled them out. I threw in the old plugs that I pulled out of the truck and it fired right up. So I reset my carb and got a new set of ACDelco's to put in. Had NGK's (Figured they were alright since its the only spark plug used in my SAAB), gonna swap them in once the truck cools down.
Chicken and egg ?????

I once put two brand new Champions in a Cat pony motor and it wouldn't even putt! I don't remember what the deal was with the ones I pulled out, but somebody gave me a couple of old Autolites out of a junk bucket, and it fired right up. I think they were still in there when I traded off the Cat.

Some brands of plugs just don't work in some engines. Doesn't make sense, but ......
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Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner
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