86 Scottsdale - No start

[LS short box]

The needle and seat in the carb should prevent more fuel into the engine as you crank it. Holding the butter flies open don't affect the needle and seat operation. But having said that crank it and see if it's dumping fuel into the engine.
Again back in the day I don't recall disconnecting the fuel line but it's been 30 plus years.

[BAChevyMan]

Originally Posted by LS short box

The needle and seat in the carb should prevent more fuel into the engine as you crank it. Holding the butter flies open don't affect the needle and seat operation. But having said that crank it and see if it's dumping fuel into the engine.
Again back in the day I don't recall disconnecting the fuel line but it's been 30 plus years.

Yeah, I am used to pulling fuel pump relays... about the oldest vehicle I touch now is around a 1992. Nothing carbureted though.

[BAChevyMan]

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.

[1976gmc20]

Originally Posted by BAChevyMan

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 ......

[BAChevyMan]

Originally Posted by 1976gmc20

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 ......

Funny thing is... it was autolights that I put in that made it start. I even cracked the insulator on 2 plugs going in and it still rolled down the road like a champ. It dont start worh a damn in the cold though. I think I need to check the instalation of my electric choke.