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Just had motor built, the back cylinder when running you can put hand on pipe, it does'nt get hot.
check compression ok
has fuel
plug has fire.
but when put timming light on the back cylinder it does'nt work, front works fine.
 

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Just had motor built, the back cylinder when running you can put hand on pipe, it does'nt get hot.
check compression ok
has fuel
plug has fire.
but when put timming light on the back cylinder it does'nt work, front works fine.

Does it run rough? If it runs at all. Did you change cams. Sound like cam timing is off.
 

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Registered
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Just had motor built, the back cylinder when running you can put hand on pipe, it does'nt get hot.
check compression ok
has fuel
plug has fire.
but when put timming light on the back cylinder it does'nt work, front works fine.
Pull it down and recheck your timing marks. If you have a good spark, fuel ,and compression then you have to be off with your timing.. If the front cyl is fine then you may be off a tooth or two on the rear..check your rear valve lash also..
 
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