Do you mean power valve plug or manifold? I’m assuming you mean power valve because you mentioned ignition side. Yes, it’s common for them to leak, but it’s usually not a huge performance problem… just a mess and it’s hard to do a proper leak test.
If you only put rtv on the exterior, try pulling it from cylinder, swab in rtv and re-install. Be sure to cleanup any excess rtv inside cylinder. If it’s an o-ringed type, put a new o-ring on it.
Ooh! sounds worse than I thought. Usually the plugs will have a very slight leak if any. I’d pull ’em and see what’s up.
What year is the cylinder? If it does need new plugs, you can get the o-ringed type from Swedetech (depending on cylinder year). If the cylinder is modified, you’ll probably need to reshape the new plugs to match. Hope you don’t have to go down that road though.
Robert, another thing I just considered… if it’s a 2000 to 2002 cylinder (I think?) hold off on removing the plugs. Those years have difficult plugs and can’t simply be re-installed. I believe those have to be glued in place. Anyway, tell us the year of the cylinder and any other details about the ‘blow-ups’ and maybe someone else can chime in with suggestions.
P.S. I could be wrong, but I don’t think the power valve is the reason for the blow-ups. I believe people used to just wire them open and run it that way (before plugs were readily available).
Not sure what year it is, I was told when he orders parts he orders for a 99′ model.
The cylinder has been stripped and recoated MANY times so I’m sure the plugs have been removed. I was going to glue them in with Devcon and move on but wanted some input into the chance this was a common issue with a simple repair.
Timing, CCV and squish were all way off. All or any combination of these can cause the seizures but it always melts the piston just at the area where the leaking plug is at.