[Gerry Zagorski]

Compression seems OK... I would not worry about a difference of 4 or 5 lbs.


Seafoam spray is not going to clean your carbs.... What Seafoam spray does do is decarbon the pistons, rings and cylinder walls which is a good thing to do, especially on the older 2 strokes.

If you want to try and clean the carbs without taking them apart then you will need some sort of fuel treatment. Probabaly best to do this with a portable tank so you don't have to treat all the fuel in your main tank to get the ratio you need. Having said that, the best thing to do is remove the carbs and clean/rebuild them.. They sell kits for this but not something I would attempt.

Before I went that route I would check other places first like spark....

When you take the plugs out, are any of them more fouled then others ? If so you could have a bad wire, coil pack, ECM etc....

Wires are an easy fix and place to start but Coil packs and ECM testing way over my head and probably something I would have a mechanic check out who has the right test equipment.