Here is my build thread. I wanted to keep this question separate to hopefully generate more responses and be easier to find for people in the future.
1977 fj40, 2f, Holley sniper, long tube headers.
Upon start up and initial idle, regardless if it’s hot or cold start, siting for a week or a minute, I shoot wet black soot all over my wall and floor. It typically goes away after it reaches 160deg.
What do I need to check first? I don’t seem to have any other issues, the truck starts and runs fine.
I’ll report back with vacuum numbers. I would think potential vacuum leak causing a rich start up, but I don’t have any clear signs. Black soot does not smell like gas.
It also stays in the garage, so how much condensation could really form in the exhaust?
1977 fj40, 2f, Holley sniper, long tube headers.
Upon start up and initial idle, regardless if it’s hot or cold start, siting for a week or a minute, I shoot wet black soot all over my wall and floor. It typically goes away after it reaches 160deg.
What do I need to check first? I don’t seem to have any other issues, the truck starts and runs fine.
I’ll report back with vacuum numbers. I would think potential vacuum leak causing a rich start up, but I don’t have any clear signs. Black soot does not smell like gas.
It also stays in the garage, so how much condensation could really form in the exhaust?