Engine trouble ???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cheyguy · 02-25-2003, 11:13 AM

I've got a problem and I'm not sure what to check next! My '80 4x4 has a 350 w/auto trans that starts fine, idles fine, runs fine till it shifts into 3rd, then the engine really boggs down. I took it to my trusted mechanic who said it was the tranny. Well $2000 later and a rebuilt tranny it still no better. But now when I accelerate above 40 mph or go up hill the engine sputters and revs (like a clogged fuel filter). I've changed the fuel filter, checked all the plugs and wires. I'm thinking I need to rebuild the carb but I'm not sure thats my problem. Any ideas are appreciated. Thanks, Mike

gchemist · 02-26-2003, 01:03 AM

Is your advance working properly? It may be time for a carb rebuild or replacement.

02-25-2003, 11:13 AM	#1
cheyguy Registered User Join Date: Oct 2002 Location: Manchester, TN Posts: 215	Engine trouble ???? I've got a problem and I'm not sure what to check next! My '80 4x4 has a 350 w/auto trans that starts fine, idles fine, runs fine till it shifts into 3rd, then the engine really boggs down. I took it to my trusted mechanic who said it was the tranny. Well $2000 later and a rebuilt tranny it still no better. But now when I accelerate above 40 mph or go up hill the engine sputters and revs (like a clogged fuel filter). I've changed the fuel filter, checked all the plugs and wires. I'm thinking I need to rebuild the carb but I'm not sure thats my problem. Any ideas are appreciated. Thanks, Mike __________________ '71 Cheyenne Super '80 Custom Deluxe '75 Blazer

02-26-2003, 01:03 AM	#2
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Is your advance working properly? It may be time for a carb rebuild or replacement. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos



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