i got this quad 2 days ago its a 07 honda rancher 420 it runs good shifts good no knocks or ticks just smokes BAD like it needs rings or rebuilt whats my best option and what should i uy just rings and gaskets or the whole cleaning piston rings and everything route??

 

You have to wait until it's torn down to see what you need but 99.9999% of the time you will need a piston, rings and a bore job on a 4 stroke engine that is smoking. Also don't forget to mic the valves and valve guides while your in there.

 

at the very least a set of rings & a gasket set. Do a compression test on the cylinder and get a good reading- that will halp determine how bad it is. If the compression is low, repost and I'll give you a few tips how to quickly determine the cause without tearing the engine apart

If the cylinder has no large deep scratches and the piston looks good- a simple cylinder hone and a set of rings should be fine.

 

Ok, here's a little something to try before you do anything. Do an oil and filter change but short the oil by about a pint. Then add a pint of Marvel Mystery Oil. My 2001 F150 was blowing blue smoke and going through oil at a rate of 1 qt. every 400 miles ! My nephew who is a ford mechanic told me to do the MM thing and I'll be darned if that didn't clear it up. I would have never believed it but it sure saved me a ton of money. It must have been a stuck ring or a stuck valve seal or something. I know I sound like a commercial but believe me, I have nothing to do with MM oil.

 

Maybe it just has the wrong gas in it.Maybe mixed gas for a weedeater got dumped in it by mistake?