Driving it off the cliff

[Stl-986]

I get misfires as soon as the sai turns off. So I would say...warmish & hot.

Tomorrow I will get it out and get Durametric to do some logging. What would be good for everyone to look at? Thinking...rpm, misfire on each cylinder, what else?

Have a vac gauge coming tomorrow. O'rileys was out as was HF.

[blue62]

Originally Posted by Stl-986

I get misfires as soon as the sai turns off. So I would say...warmish & hot.

Tomorrow I will get it out and get Durametric to do some logging. What would be good for everyone to look at? Thinking...rpm, misfire on each cylinder, what else?

Have a vac gauge coming tomorrow. O'rileys was out as was HF.

If vacuum test shows low vacuum with a steady needle then that says vacuum leak.
If lumpy hunting idle changes to smooth running at 1500-2500-2800 RPM
then those two things together are a very very strong indication of a vacuum leak.

since your misfires start as soon as your SAI turns off the vacuum leak is most likely some where in the SAI system.

Would be interesting to compare rough running of cyls. on bank 1 to cyls. on bank 2
I think Durametric shows rough running for each cyl.