I recently picked up a '98 700 vmax xtc and it has a rather loud knocking noise in the engine. Sounds like a bad lifter in a car motor. Is this normal? Its my first sled so I have no experience. I am not familiar with this type of engine but I didn't see any lifters in the service manual so I assume that's not what would cause the noise.
Thoughts?
Thanks!
Thoughts?
Thanks!
thats not normal and 2 strokes done have lifter or valves.
does it run fine ?
all plugs look good ?
check for loose bolts on motor mounts on front of engine or broken mounts.
all plugs look good ?
check for loose bolts on motor mounts on front of engine or broken mounts.
Yeah it runs great(still need to run it a bit more since it had been stored a few years) plugs are clean and haven't found any loose bolts anywhere. I'll check the motor mounts. Really sounds like a lifter knock but I know there aren't any in this motor. I need to see if I can pinpoint the noise better. Really seems like it's coming from the head.
maybe make a short video clip and post it on here ?
It would have to be a YouTube or Facebook clip. Site does not allow Video uploads.
s10mike
Member
I would pull the head off and make sure theres nothing sitting on top of any of the pistons hitting the head. Before i ran it any more
ring gear loose on clutch?
s10mike
Member
Dont think it has electric start
Yes I thought about this. I looked in through the plug holes but didn't see anything. I think I'll pop off the head.
No es.
s10mike
Member
Let us know what you find
So took off the head and everything looked good. Here's a vid on YT. https://youtu.be/HW4Lgf4oYtw I don't know maybe it's normal? What's your thoughts?
I see no video?
s10mike
Member
Looks and sounds like an exhaust leak. I think it needs exhaust manifold gaskets. It definitely doesn't sound normal.
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I see no video, what am I missing here?
IPad Air 2
I did see it on my cell though...
Sounds horrible
I did see it on my cell though...
Sounds horrible
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Brand new gaskets.
Uggg. Thats what I was afraid of. I have no idea what to do then. What could make that knocking??