Trucksareforwork
Full Access Member
- Joined
- Feb 22, 2022
- Posts
- 244
- Reaction score
- 473
- Location
- Spartanburg SC
- First Name
- Geoff
- Truck Year
- 1985
- Truck Model
- C10
- Engine Size
- 305
Ok, here's the deal: 1985 C10 with a 305. No air pump or EFE, but all other vac lines are updated and intact. Truck has run like a champ for more than a year after a light restoration (thread elsewhere). I'm having trouble suddenly and wanted any quick ideas. The story:
The truck had to be parked outside for most of the winter after I lost access to some shop space. I drove it a few times, but not a lot. Maybe less than 100 miles.
Then, I suddenly started to get a stall situation while in gear and warmed up. Truck would warm up fine, then when I would get to a stop sign it would just...quit. I can't even describe it any differently. No sputter, no struggle, just...Off as if spark has just stopped.
I fiddled around and realized that my distributor hold down was a little loose, and so figured I had just slipped timing a little bit. Got out the timing light and re-set timing over the weekend. Ran good/great after that. I thought I had solved the problem.
Then today, I needed the long bed for a project, and figured what the heck, I'll take it out on the road. Got outside the driveway and... just stopped. Then couldn't get more than a sputter on re-start. Got pissed, left it there, came back in two hours and got it started (cold again) and pulled it back in the drive.
Any idea what could be causing such behavior? The Distributor seems plugged in well (my first thought was the pigtail getting intermittent), I THINK all the vac lines are intact...they were mostly replaced in 2022.
Is there something in the carb (quadrajet) that would cause this behavior after warming up? My other theory is perhaps a major vac leak related to one of the TVS's (since the issue shows up after warming up), but I don't hear anything. Anything else?
I'm just looking for ideas. Starts cold, then stall, then basically no start after the stall.
Thanks!
The truck had to be parked outside for most of the winter after I lost access to some shop space. I drove it a few times, but not a lot. Maybe less than 100 miles.
Then, I suddenly started to get a stall situation while in gear and warmed up. Truck would warm up fine, then when I would get to a stop sign it would just...quit. I can't even describe it any differently. No sputter, no struggle, just...Off as if spark has just stopped.
I fiddled around and realized that my distributor hold down was a little loose, and so figured I had just slipped timing a little bit. Got out the timing light and re-set timing over the weekend. Ran good/great after that. I thought I had solved the problem.
Then today, I needed the long bed for a project, and figured what the heck, I'll take it out on the road. Got outside the driveway and... just stopped. Then couldn't get more than a sputter on re-start. Got pissed, left it there, came back in two hours and got it started (cold again) and pulled it back in the drive.
Any idea what could be causing such behavior? The Distributor seems plugged in well (my first thought was the pigtail getting intermittent), I THINK all the vac lines are intact...they were mostly replaced in 2022.
Is there something in the carb (quadrajet) that would cause this behavior after warming up? My other theory is perhaps a major vac leak related to one of the TVS's (since the issue shows up after warming up), but I don't hear anything. Anything else?
I'm just looking for ideas. Starts cold, then stall, then basically no start after the stall.
Thanks!