1983 C10 been Sitting since 1990 Need to make it run. Where do i start? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

michaeltennis7 · 10-26-2011, 03:09 AM

ok i just got a one owner 1983 gmc sierra it has a 6 cylinder 3 on the tree 2wd shortbed with only 82k orginal miles!!! but its been sitting since 1990 :[ it starts up it will barley idle and if it does it will die out a few seconds after. i can drive it but it wont go over 20mph. but it will rev up as if nothing was wrong with it??? what do you guys think???

*project 67 sub* · 10-26-2011, 03:32 AM

rear brakes possibly froze up???

paintslinga2010 · 10-26-2011, 03:34 AM

I had the exact same situation with my grandpas 83. It had only been sitting since 01 though. His is a 305 though but the exact symptoms. Maybe its something similar, so I'll be watching this thread. You could try rebuilding the carb and replacing vacuum lines. I did both but neither got it to idle.

walkerb · 10-26-2011, 07:10 AM

new gas?

motornut · 10-26-2011, 07:33 AM

i would check the weights on the dizzy
remove the line from the fuel pump to the carb ,
drain and re install it
check out for cracked vac n rubber lines

Pyrotechnic · 10-26-2011, 12:56 PM

Leaving a vehicle to sit is a lot harder on it than daily driving.

First, why was it parked? Was there something wrong with the motor like an overheating issue or a popped head gasket? Did the owner get a new vehicle and leave that one sitting? Try to find out if it ran when parked.

If it ran when parked:

-Rebuild carb - it's probably gummed up and causing the issues you're having
-ALL new fluids
-Replace all rubber hoses
-Fresh spark plugs and wires for sure, cap and rotor if needed
-Drop the gas tank and clean it, replace filter sock
-Shoot some solvent into the metal fuel lines and blow them out
-Go through the brakes completely - you just can't trust brakes that have been sitting that long

10-26-2011, 03:09 AM	#1
michaeltennis7 Registered User Join Date: Mar 2009 Location: denver,co Posts: 3	1983 C10 been Sitting since 1990 Need to make it run. Where do i start? ok i just got a one owner 1983 gmc sierra it has a 6 cylinder 3 on the tree 2wd shortbed with only 82k orginal miles!!! but its been sitting since 1990 :[ it starts up it will barley idle and if it does it will die out a few seconds after. i can drive it but it wont go over 20mph. but it will rev up as if nothing was wrong with it??? what do you guys think???

10-26-2011, 03:32 AM	#2
project 67 sub Account Suspended Join Date: Mar 2007 Location: san bernardino ca. everywhere Posts: 3,938	Re: 1983 C10 been Sitting since 1990 Need to make it run. Where do i start? rear brakes possibly froze up???

10-26-2011, 03:34 AM	#3
paintslinga2010 Registered User Join Date: Apr 2009 Location: Steelville mo Posts: 52	Re: 1983 C10 been Sitting since 1990 Need to make it run. Where do i start? I had the exact same situation with my grandpas 83. It had only been sitting since 01 though. His is a 305 though but the exact symptoms. Maybe its something similar, so I'll be watching this thread. You could try rebuilding the carb and replacing vacuum lines. I did both but neither got it to idle.

10-26-2011, 07:10 AM	#4
walkerb Registered User Join Date: May 2010 Location: Rochester NY Posts: 831	Re: 1983 C10 been Sitting since 1990 Need to make it run. Where do i start? new gas? __________________ 1973 k20 Suburban 350 1974 Custom stepside c-10 250 1975 Chevy stepside 454 1986 K30 Crewcab SRW 350 R.I.P- glimmertwin01- board member and good friend, you will be missed

10-26-2011, 07:33 AM	#5
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: 1983 C10 been Sitting since 1990 Need to make it run. Where do i start? i would check the weights on the dizzy remove the line from the fuel pump to the carb , drain and re install it check out for cracked vac n rubber lines __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

10-26-2011, 12:56 PM	#6
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: 1983 C10 been Sitting since 1990 Need to make it run. Where do i start? Leaving a vehicle to sit is a lot harder on it than daily driving. First, why was it parked? Was there something wrong with the motor like an overheating issue or a popped head gasket? Did the owner get a new vehicle and leave that one sitting? Try to find out if it ran when parked. If it ran when parked: -Rebuild carb - it's probably gummed up and causing the issues you're having -ALL new fluids -Replace all rubber hoses -Fresh spark plugs and wires for sure, cap and rotor if needed -Drop the gas tank and clean it, replace filter sock -Shoot some solvent into the metal fuel lines and blow them out -Go through the brakes completely - you just can't trust brakes that have been sitting that long __________________ 1977 GMC Sierra Grande



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