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  • Roscobbc
    Roscobbc replied to the thread Recurrent misfiring problem.
    Remember the old Colourtune sparkplugs?. With it's glass (rather than ceramic) insulator you would adjust your ideal mixture to a...
  • teamzr1
    teamzr1 replied to the thread Recurrent misfiring problem.
    If the sparkplug gap is correct and your testing showed high voltages from coil than it would have to be a makeup of the charge to the...
  • antijam
    antijam replied to the thread Recurrent misfiring problem.
    I was much of your opinion. However, I've tested and swapped all the ignition parts separately. Everything is in spec and each item...
  • Oneball
    Oneball replied to the thread Recurrent misfiring problem.
    If that is the case then your problem is almost certainly in the electrical system. There are very few non electrical issues that test...
  • antijam
    antijam replied to the thread Recurrent misfiring problem.
    I'll do that JR.(y)
  • teamzr1
    teamzr1 replied to the thread Recurrent misfiring problem.
    Since you going through all the time and effort, while having intake off I would hand rotate the engine and assure the lifters are...
  • antijam
    antijam replied to the thread Recurrent misfiring problem.
    I use this Gunson timing lamp. With the engine running I simply fit the inductive pick-up on each HT lead in turn and pull the trigger...
  • teamzr1
    teamzr1 replied to the thread Servicing and diagnostics.
    Sounds like a crap tune by Hennessey, but that is common with them :-( If you only have a DTC (code) reader, depending on if its worth...
  • antijam
    antijam replied to the thread Recurrent misfiring problem.
    That's exactly what I'll do when I get the manifold back on. (y)
  • I
    IoM Mike replied to the thread Servicing and diagnostics.
    Many thanks for this! Would a OBD2 scanner pick up the fault from the OBD module? My car can be running fine and then switch off for a...
  • I
    IoM Mike reacted to teamzr1's post in the thread Servicing and diagnostics with Like Like.
    The PCM and EBTCM controllers is designed to protect the car from going bonkers due to having drive by wire If it reads from the...
  • teamzr1
    teamzr1 replied to the thread Servicing and diagnostics.
    The PCM and EBTCM controllers is designed to protect the car from going bonkers due to having drive by wire If it reads from the...
  • Oneball
    thanks to all that have helped me over the last few months. Having had a Chevy Berlinetta and a 3rd Gen Trans Am in the past. Late life...
  • Oneball
    Oneball replied to the thread Recurrent misfiring problem.
    You said you determined which cylinder was misfiring with a timing light? How did you do this and what sort of timing light do you have?
  • teamzr1
    teamzr1 replied to the thread Recurrent misfiring problem.
    Really cannot see close enough in that 1 photo as valvetrain for both heads It seems looking at how much the manifold gasket was...
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