problem with my brothers 98 1200
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Road Master
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From: Mo
problem with my brothers 98 1200
Was out riding yesterday with my brother, I was riding his bike so I can check out mine, looking and listening to it, but his was running PERFECT! We pull into a gas station, sit for about 30 minutes, he went to leave on his fired it up, running on one cyl. popping out of the exhaust. Changed the coil, same thing. Changed the plugs, same thing. Pulled the plugs, spark was very weak looking to me. Do those have a cam sensor? Any suggestions??
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From: NW AR
Is there compression on the back plug? Use your built in compression tester (thumb). Pull plugs, put thumb over spark plug hole. Crank motor. Compression pushes thumb off hole. Same on front and back?
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From: la la land jerzey
chances are its an exhaust valve hit the piston - valve guide seal leaking into the exhaust guides has clogged the botton and it turns into glue with carbon rocks and that sticks the valve in the open location - badda bing the valve is done - < it gets wacked
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Road Master
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From: Mo
WTH would cause that!? I personally was riding it, pulled into the parking lot, it was running like a sewing machine! He went to start it, popping backfiring like hell!! There is NO noises or **** rattling around in that head that I can hear either..going to take it apart soon!
Seasoned HDF Member
Joined: Aug 2007
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From: NW AR
Well in my case, the exhaust crossover pipe was leaking, when we stopped, cold air sucked in and hit the valve guide, which shrunk it without shrinking the head. Hit the starter and the valve and guide dropped out of the head, 850 miles from home, leading to:
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Road Master
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From: Mo
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Road Master
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From: Mo
Well,.... GOOD NEWS!!! I decided to take the breather off, get me a squirt bottle(Windex bottle) idled it up, squirted some water in the ole carb, I mean A LOT! Then got me a cap full of trans fluid,took the sparkplug out of the rear, dumped it in the head. Started it up, squirted the trans fluid into the intake....BAMM! Running like new money again!!
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