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IFOL519

Mud in engine

20 posts in this topic

I recently raced a hare scramble and I got stuck in the mud. It took 5 guys and about two hours to get my bike out. When we got the bike out and started it it made a strange noise but it still ran. When I got home I checked the radiators and they were empty and the I checked the oil and mud started to come out. I used oil and air to try and get it out but some mud is still coming out. What should I do? Do I keep doing this? I have not started the bike again

I run a 2007 yz450f

thanks

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I recently raced a hare scramble and I got stuck in the mud. It took 5 guys and about two hours to get my bike out. When we got the bike out and started it it made a strange noise but it still ran. When I got home I checked the radiators and they were empty and the I checked the oil and mud started to come out. I used oil and air to try and get it out but some mud is still coming out. What should I do? Do I keep doing this? I have not started the bike again

I run a 2007 yz450f

thanks

i would at least pull of the crankcase cover on both sides and inspect..but for on the radiators being completely empty i would be reaaaaally worried unless you find a hole in the cores somewhere....goodluck glad it not me :p and if it were me because im ocd with my bike i would take the motor out and tear it down and check everypart on it !!

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split the cases, clean inspect, and assemble, and then flush it a couple times using some kind of cheap oil. then dump some good in and run it, after about 45 min, to 1 hour of riden, empty it out and change oil filter and oil.

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No shortcuts. Tear the whole thing down and do it right. The potential expense in the alternative is just too big.

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i would tear that whole motor apart no questions asked. i wouldent be surprise if you have to replace a lot of parts inside..

ie. clutch, bearings, valves ect..

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Make sure you disassemble the oil pump and clean it. Grit will grind into the case if left untouched.

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Make sure you disassemble the oil pump and clean it.

I would just replace the oil pump and rotor, along with the main bearings and big end bearing (and anything else that doesn't look right).

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Sorry to here that, I had a wr 426 only 200 miles old that got stuck in deep

mud , we had the same problem the bike would not start ,when we got it running rode 5 miles home,the engine was full of mud so we stripped the motor . I had to change oil pump,engine bearing, camshaft, piston and barrel

, the mud had blocked all the oil feeds and the mud must have been quite sandy because it looked like someone had shot blasted the internals.

I hope you have better luck

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Well as you guys said I took my motor to my mechanic and he opened it up and it was not pretty. Now I need to find alot of part so I was wondering if you guys knew were to get oem parts at low cost.

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I have purchased some of the parts I need such as the cylinder, piston and gaskets, but the head also was damaged so I need another one, my mechanic says he has one but he doesnt have the buckets that go ontop of the valves. The problem is I cant find were they sell them, I looked at the TT store but I could find them, anyone know were I could purchase them?

thanks for all the help

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I have purchased some of the parts I need such as the cylinder, piston and gaskets, but the head also was damaged so I need another one, my mechanic says he has one but he doesnt have the buckets that go ontop of the valves. The problem is I cant find were they sell them, I looked at the TT store but I could find them, anyone know were I could purchase them?

thanks for all the help

Yamaha (or TT OEM ). Right there on the Valve page in the parts book:

3FV-12153-10-00 (5 required )

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upside is you're going to have a brand new motor when all is said and done

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I feel stupid now.

I was looking in the wrong place.

thanks

It takes a while to get the hang of the parts book layout.

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