Hi guys,

I have just bought a XT660X 2009 and found oil leaking from Air filter and the radiator!, Can anyone help on this?.... it seams like the previous owner had over heated the engine and maybe the head gasket had leaked? (only an assumption) Any advice on that?

I bet you any money the previous owner hadn't quite sussed out the oil level/filling technique and overfilled it. It is very easy to overfill if you aren't careful. Any excess will quickly blow through the crankcase breather and accumulate in the airbox (and that's your air filter leak). Also if not filled carefully oil will more often than not spill out the filler hole in the frame and trickles down and accumulates on and around the radiator and takes days if not weeks to slowly trickle through the fins (and that explains the oil coming from your radiator). In fact its not uncommon for dealers to make a mess of oil filling changes!

In a nutshell, don't worry about it. Drain the airbox out of its drain tube, check the airfilter isn't contaminated, check and clean round the radiator's left hand side and recheck the oil level carefully as per handbook/manual. Basically the bike should be level with engine having run for a good few minutes.

__________________

Pleiades you a star, thanks. I've checked the oil level and its good. Now having the oil pissed through the air filter, would i have to change it? or can i clean it and put it back on?.......

If it's got the stock paper element and it's contaminated, then yes, you will need to replace it. If it's got either a cotton gauze (K&N, DNA etc) or a foam filter then just wash out and re-oil.

__________________

Welcome to the forum glad Pleiades was able to help you solve your issue, he really is a fountain of knowledge! Well worth the investment to become a supporter for �10 a year this forum will save you more than that easily. Hope you enjoy your new XTX.

__________________
Now have a 2017 S1000XR Sport SE

2006 XT660X - Cat D write off due to someone pulling out on me - Pipewerx carbon fibre exhausts - Snorkel removed and airbox drilled - DNA stage 1 + 2 air filters - Kevs fuel controller mod - Scottoiler V system - Oxford heated grips - HEL braided brake hoses - Wilbers 540 rear shock - Brembo brake pads - AFAM chain and sprockets - Michelin Pilot Street Radial's - Denali DX Xtreme dual intensity spotlights