I bought a TRX250X with a ticking noise in it. We open up the top end and noticed the rocker arms were worn. We replaced those, as well as, the Cam Shaft and bearings but 4-wheeler still is ticking loud. When accelerating it gets louder and faster. Any ideas?
Welcome to the forums...Free downloadable manuals in the Schematics/Manual help section in the Technical discussions ...Did you check the timing chain,and adjuster while you had it apart??? Maybe there's an exhaust leak???
Valves are adjusted to spec. My brother is the one doing the work and he can't figure out why it would be tapping the way it is. No exhaust leak and the timing chain,and adjuster are good. Any other ideas on what could be causing it?
Did you put a stock cam back in???The easiest way I can explain how to adjust the valves on a 250X is remove the spark plug, the side plugs on the stator cover take a 17mm socket and put in the larger hole rotate the engine counter clockwise until you allign the "T" mark with the notch in the little hole. Grab the exhaust rockers and wiggle them remember how loose or tight they were now rotate the engine 360 and allign the "T" again check the rockers, which ever way they were the loosest is TDC Compression stroke. make your adjustments there. a tight .004 int and exh. Make sure you do this with a cold engine. or you will get an inaccurate reading.
Would be nice if you knew whether the cam is stock,or not/what brand,and grind it is as most aftermarket cams call for different valve lashes than an oem stock cam...
This is the description for the cam. It was bought on ebay. New Camshaft with Bearings for Honda TRX 250X, 1987-1992 models and TRX 300EX, 1993-2006 models: (09120) This is not a used reground cam. Replace your old, worn cam so she runs like new again.
Sounds like a stock cam, either way you need to check the lash as I described above, one other thing you need to check is the decomp lever adjustment. here are the instructions
no problem. If you need a service manual I have one and the best part????? it's free!!!! so don't try to talk me down!! lol
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