Oil in air filter

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Help!
I've got an 89 fourtrak na diesel.
Found an oil leak on front left, on closer inspection found oil in air filter. What's it done??

piston rings worn out at a

piston rings worn out at a guess, blowby, has it been started with easy start?

Full of ideas but no time to do them!!

www.bloodredoffroad.com
www.milneroffroad.com
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youtube: Redfourtrack

Not used easy start, fires

Not used easy start, fires first time no problems. Started having a shake at around 2000rpm now found this oil.

Usually it forms in the

Usually it forms in the intercooler over time, its the oil vapour condensing and forming oil.

Simple rule is to remove and clean the intercooler every 3 years or so, this normally keeps it in check and not a difficult job to do.

If it is a lot of oil and it refills the intercooler quickly it will show in the air filter, and the only place it can come from is the turbocharger which suggests a leak, blocked or obstructed oil return, or worn turbo bearings.

^ 89 na diesal.....noooooo

^ 89 na diesal.....noooooo intercooler

Full of ideas but no time to do them!!

www.bloodredoffroad.com
www.milneroffroad.com
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youtube: Redfourtrack