Recent content by Bigdog67

Random miss is killing me. F/S Blazer 5.7 tbi

I believe I have it narrowed down to # 3 cylinder. I have to pull the plug and see what it looks like.
- Bigdog67
- Post #6
- Jul 11, 2021
- Forum: Engine Performance + Maintenance
Random miss is killing me. F/S Blazer 5.7 tbi

Tbi. Checking wires last night one wasn’t seated all the way but no change. Haven’t tried the pulled vacuum line yet, but will shortly as well as spark. Did change out coil wire and did notice a change. Resistance on old wire was a little higher than my spare. Yea I still carry a spare coil...
- Bigdog67
- Post #4
- Jul 11, 2021
- Forum: Engine Performance + Maintenance
Random miss is killing me. F/S Blazer 5.7 tbi

For the most part I’ve always had a random misfire. Recently it got extremely worse. From a dead stop or rolling if I hit the gas she would bog down as if she had no pow. Put a new 02 sensor in and it helped pulled egr, again it helped. Ran a scan on it and I noticed she had 14 degrees of timing...
- Bigdog67
- Thread
- Jul 10, 2021
- Replies: 7
- Forum: Engine Performance + Maintenance