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OT '94 GMC

C

CH(upstate,NY)

Member
After finishing plowing to my equiptment shed so I could get my loader tractor out last night, I parked my truck at my shop to grab some parts, Came out 15 minutes later and the engine spun fine but wouldn't start. Thought I might have gotten snow on the distributer. It's a '94 sierra 350. I put an old plug on one of the leads and have spark, weak but if you saw the plug I used. I checked the inj and ign fuses and they're good. I don't smell any gas. I tried to hear a click while turning the key and couldn't. And I can't find my service manual.

Which line going into the throttle body in gas from tank? I'd like to lossen it and see if I'm getting gas.

Appreciate any help. It's cold out there.
 
Coupla years ago, I busted some snow banks with my '89 Chevy pickup. It got moisture inside the distributor, and apparently the moisture would interact with the accumulation of dirt inside the cap.

After sitting overnight in freezing weather, it would start right up, but as soon as it warmed enough for the frozen moisture to thaw, it would sputter and quit.

I finally got a new distributor cap and rotor, took the old cap off, sprayed the inside of the distributor liberally with WD-40, (the WD stands for 'water dispersant') and blew the inside of the distributor dry with compressed air.

Then installed the new cap and rotor. Solved the problem.
 
don't remember for sure which line it is but I rember the lines being two different sizes and the supply was the larger line, but it shouldn't matter which one you pull off, if you pull off the return it will spray from the TBI instead of the line, it still could be ignition though it takes more voltage to fire a plug under compression then it does sitting in the open.
 
The larger line is pressure . But seeing if yuo have fuel won't do much for you . You need to see what you have for fuel pressure ,,no room for guessing .
 
I bought a can of starting fluid on my way home today. Sprayed some in the throttle body and it started and ran fine. Go figure. Waited a half hour and tried again and it fired right up.
 
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