[samviv99]

Hey Guys... I have a 2006 Honda TRX350FM6 and one of the pushrods has had the top of it mushroomed. Has anyone got any idea of what may cause this? Also the air filter is full of oil but i guess thats just from the timing being out.

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[shadetree]

welcome to the forums. just guessing ?, a valve stuck open.

 

[shadetree]

could also be from timing being out ??.

 

[samviv99]

This is the first time i have tried anything on this bike i tried to adjust the timing and saw that the top was obviously screwed up. Then i havent gone any deeper down in the engine.

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[samviv99]

I thought that it was probably just someone not timing it properly. Before i buy another push rod and put it in i was just checking nothing else could be a problem

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[shadetree]

This is the first time i have tried anything on this bike i tried to adjust the timing and saw that the top was obviously screwed up. Then i havent gone any deeper down in the engine.

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seeing that push rod ?, i'd almost bet your piston hit a valve ?, if it did ?, you prob ruined your piston or bent a valve ?, or both !. hard to say ?, if you messed the valves up when setting them ?, then expect to see damage.

 

[shadetree]

I thought that it was probably just someone not timing it properly. Before i buy another push rod and put it in i was just checking nothing else could be a problem

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until you pull the head, and have a look at your valve heads and piston ?, I would say you got damage.

 

[samviv99]

The piston seems fine and the valves... is it possible it is just a bad timing issue?

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[b52bombardier1]

I'd also be concerned about the cupped ends of the rocker shafts where those push rods engage. You probably have significant wear there.

Rick

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[samviv99]

Thanks guys for all your help. Very much appreciated ???

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[rodp]

Excessive tappet clearance will do it, the pushrod becomes an impact driver not a pushrod.