Keep blowing out spark

[Sho Amo]

I dunno yet. It turns out my wiring was incorrect so Ive actually not tried the parallel configuration yet. I will be trying it soon.

 

[sho_sc]

Ive been having issues blowing out spark. I had it tuned perfect at 10 psi, with a solid 12 afr and autolite 3923 gapped at .035

Friday night I turned it up to 13 and it started misfiring once the boost rises over 10. Im not sure if I need colder plugs or if the coils arent strong enough. I was running this setup with no issue at the track a couple months ago. Im not sure wether this is due to using COP or what. Its certainly annoying.

My first post in 2 years!!

Now that we have went around the mountain about the COPs.... Sho Amo, when you say "turned it up to 13" are you referring to the AFR? If so, unless you have pulled a ton of timing out and/or running C16, that ain't the spark blowing out... That's detonation. BTW, I'm running 3910s ... Have some Xs going in soon.

 

[yamahaSHO]

My first post in 2 years!!

09-04-2010, 08:00 PM

Now that we have went around the mountain about the COPs.... Sho Amo, when you say "turned it up to 13" are you referring to the AFR?

I'm pretty sure he's referencing boost.

 

[sho_sc]

09-04-2010, 08:00 PM




st.

LOL! Well almost a year then ...:sun:

 

[Sho Amo]

Yes, boost. My AFRs are in the mid 11 range. Im trying out the parallel harness sunday night and if all goes well, the plug gap will stay at .035

However if it doesn't help i'll be lowering them into the .015-.025 range for the convention and ordering the KB boost a spark when I get home.

 

[ZooYoost]

Yes, boost. My AFRs are in the mid 11 range. Im trying out the parallel harness sunday night and if all goes well, the plug gap will stay at .035

However if it doesn't help i'll be lowering them into the .015-.025 range for the convention and ordering the KB boost a spark when I get home.

WOOT first post in awhile.

Listen drew, I have mine gapped at .25. Anything else and they were blowing out at 12 to 15 psi.

Go lower or go home :wave:

 

[Sho Amo]

Do you remember which plugs?

 

[Sho Amo]

Gapped to .025 and running 13psi. Thanks John.


I am still going to look into the parallel configuration and the boost a spark. Website says you can run up to 30 psi with .1 plug gap.

 

[ZooYoost]

Gapped to .025 and running 13psi. Thanks John.


I am still going to look into the parallel configuration and the boost a spark. Website says you can run up to 30 psi with .1 plug gap.

autolite I believe 1 or 2 steps colder I forget which.

Is it running better for you?

 

[Sho Amo]

Yeah It runs great now. It just doesnt like low rpm load with this gap. Im planning to do some more work to this ignition system, I just havent had the time.