Bextreme04
Full Access Member
- Joined
- May 13, 2019
- Posts
- 4,401
- Reaction score
- 5,484
- Location
- Oregon
- First Name
- Eric
- Truck Year
- 1980
- Truck Model
- K25
- Engine Size
- 350-4bbl
Sorry for lack of info, this was professionally rebuilt by local shop just a stock tbi 350, I changed all the plugs after break in and this didn't happen. I went to drive it and it ran like crap under load in gear, as changing plugs again this is what I found. I am hoping it is timing because I have had trouble timing this engine.
That gap doesn't close without a significant physical force. It isn't timing and it isn't detonation. Either you pushed really hard on that plug while putting it in and closed that up or something bounced around in that cylinder and did that.