coils

[twiz28]

My sled is arching bad, looks like Times Square in there when running in the dark with the lights out in the garage. Idles fine runs on all four so how much am I loosing? Cleaned them once this year and they were dirty as hell. I'm down on RPM and top end speed could this be a factor??

 

[Rockmeister]

Definitely!

Any spark energy loss you have, will take away from your engine power!

Check your coils, see if they are worn and not tight on the plugs.
(They should hold tight on the plug, not just the rubber part, but the metal part should hold tight, you can feel the metal springs holding and bouncing on the threads of the plug as you pull the coil off, if they are tight.)
I ran into this and it creates all kinds of carbon build-up which is conductive.

Let me know if the coils are worn.

At a minimum, clean them good with electrical cleaner, so they no longer arc.

Hope this helps!

 

[RaWarrior]

Ya, my sled idled a lot smoother and started easier after cleaning the coils. I used an old toothbrush and carb spray. Got maybe 100 more RPM at the top end.

 

[black john]

dont forget to pull those little rubber boots off the ends and clean up inside as well to get rid of all that carbon trace. i even put a little silcone on the rubber boots be for putting them back on to seal them i found that i slows the trace from coming down in side of the boots.

 

[Rockmeister]

NAPA has a dielectric grease just for this type of application.