Spark blowing out... i think....

[Hksvr4]

Did you replace the transistor. I forget what it's called. The black think that is connected to the side of the intake manifold? What about your CAS? Have you tried another one?

Edit: See if you can find plugs without the "R"

 

[ktmrider]

Quoting SleepinGVR4:
Come on someone mention something I haven't tried already.

How bout starting at the begining.
Did this problem come on suddenly ( maybe after a specific mod ) or has it been present for awhile?
Was it better or worse during the summer vs winter?
At what boost level does the break-up start happening or does it never go away?
Do you have a stutter box and if so have you disconnected it for troubleshooting?

 

[Nate]

Does it matter how long the car has been running? Does it happen just after you put fresh gas in the tank out of a tank that's been in the ground?

Check the filter sock on the bottom of the fuel pump. I'd even try removing it for a pull or two.

 

[BoostedAWD91]

It has been doing it always since he put a built motor in and new setup.

 

[SleepinGVR4]

Quoting Hksvr4:
Did you replace the transistor. I forget what it's called. The black think that is connected to the side of the intake manifold? What about your CAS? Have you tried another one?

Edit: See if you can find plugs without the "R"



I'm goin to try a new transistor next. And no I haven't tried another CAS yet.

Quoting ktmrider:
Quoting SleepinGVR4:
Come on someone mention something I haven't tried already.

How bout starting at the begining.
Did this problem come on suddenly ( maybe after a specific mod ) or has it been present for awhile?
Was it better or worse during the summer vs winter?
At what boost level does the break-up start happening or does it never go away?
Do you have a stutter box and if so have you disconnected it for troubleshooting?



Boost level doesn't matter its at high rpms. Yes I have a stutter box and no I haven't disconnected it. I don't know why I would have to.

Quoting Nate:
Does it matter how long the car has been running? Does it happen just after you put fresh gas in the tank out of a tank that's been in the ground?

Check the filter sock on the bottom of the fuel pump. I'd even try removing it for a pull or two.



I just had my fuel pump out to replace the line between the pump and the bottom of the sending unit. The sock looked clean.

 

[4thStroke]

My issue turned out to be more than just regapping the plugs. They were already gapped to .018. I threw some NGK Iridium in there, gapped them .018, took a little bit of fuel where it was blowing out, and its good.

Good luck.

 

[ktmrider]

Quoting SleepinGVR4:
Boost level doesn't matter its at high rpms. Yes I have a stutter box and no I haven't disconnected it. I don't know why I would have to.

What does a stutter box do? Answer that and then re-ask the same question.
Guess you don't want or need my help, smart off to someone else who has more time.

 

[1941Galant]

Sean, we can toss on my black top CAS and transistor this coming week if you want. I want to reset my base timing (advance it a little) anyway.