My son has an 05 Predator 90 that has started running poorly. It starts and idles fine but cuts out and backfires under load.
I have cleaned the carb thoroughly, drained the tank and installed fresh gas, installed a new fuel filter, new air filter and replaced the spark plug. But, it still runs poorly, maybe even worse. The plug color (very light tan) is indicating that it is running lean, but still seems to produces a fair amount of white smoke. Lately, the oil light started coming on and off with the oil tank full which it has never done before, is this a concern?
Lastly, I checked the compression and it's only 70 PSI! So, I am assuming it's time for a new top end? Before I get into that I wanted to get some advice here to see if I'm missing anything in my diagnosis. I would also like your advice on removing the oil injection system and stock airbox. We run 32:1 Amsoil Interceptor mix in our dirtbikes, so it would be easier for us to just run that in the atv as well.
Any words of wisdom will be greatly appreciated! Thank you!
I have cleaned the carb thoroughly, drained the tank and installed fresh gas, installed a new fuel filter, new air filter and replaced the spark plug. But, it still runs poorly, maybe even worse. The plug color (very light tan) is indicating that it is running lean, but still seems to produces a fair amount of white smoke. Lately, the oil light started coming on and off with the oil tank full which it has never done before, is this a concern?
Lastly, I checked the compression and it's only 70 PSI! So, I am assuming it's time for a new top end? Before I get into that I wanted to get some advice here to see if I'm missing anything in my diagnosis. I would also like your advice on removing the oil injection system and stock airbox. We run 32:1 Amsoil Interceptor mix in our dirtbikes, so it would be easier for us to just run that in the atv as well.
Any words of wisdom will be greatly appreciated! Thank you!