75 rd350 fouling plugs

[Overphill]

I changed my oil and head gaskets a few weeks ago. The head gaskets made the bike run with 30% more power. Afterwards it fouls plugs every few rides. Mainly the right plug. I dropped my main from 180 to 160 and no difference. Plugs look wet and oily when I check. Just took off the pipes and they aren't filling with oil and tranny level is unchanged but I only rode 30 miles or so. I never fouled plugs before the head gasket change.

[Jspooner]

Did you take any5hing else apart when you did the head gaskets?

[Overphill]

No, I didn't do anything else.

[m in sc]

if the wires/caps/coils are original, change them. also check charging voltage. a sudden need to change jetting is usually electrical in nature.

what exact bike and what mods are done to it?

[Overphill]

Stock pipes, y boot with foam filter. Pilot is a 25 and main is 160.  I went through everything electrical last year and got all that tested but didn't replace anything.

[m in sc]

id look there. they just age out.
 

[Overphill]

Sounds like good advice.  I'll try it and report back,

[dgorms]

Try trimming a 1/4" from the plug wires (both ends) and reinsert into coils and plug caps. They tend to oxidize over time.

[AAAltered]

We've all been there.  It's probably not even related to your gasket change.
The two times I chased this on my R5 it was:
- Charging issue, battery would fall below "x" colts and foul plugs.  That time it was cocked brushes in the pickup.
- Bad coil.  They age out, overheat then foul plugs.

I have found that Irridium plugs seem to last longer than traditional plugs too, but that is a different rabbit hole.