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steve berta 06-13-2011 03:40 PM

1984 vf750f rear cylinder problems
I have been, rebuilding a 1984 interceptor750 wich i bought and had carb problems. Rebuild them and got the bike running and was running excellent . Whould go and start it once to twice a week all was good. So was using an auxilliary gas tank because i had to get mine done. So just befored i odered all my part to put the bike back on the road i let the bike run to empty th cars. The bike sat for a month or so until i received my parts. In the mean while got the tank cleaned and sealed
put the bike together go for my road test and the thing dies.Did some test fuel and so on to find that the rear cynlinder arent firing properly .
so changed the coil same thing swap coil front to rear same thing every thing works properly when installed on the front cy;inder cuircuits
. So decided to take a compression test all four cylinder are a 160psi. So now i am i bit confused did a kinda leek down test can seem to seal the rear cylinder was wondering, if the change could of get loose and lost valve timming any help would be appreciated

yours truly steve8-)

seruzawa 06-13-2011 04:40 PM

Early Honda V-4s are notorious for having valve problems. It'd be best to pull of the valve cover and inspect and measure them. Also recheck the timing of the cams. They are very difficult to get timed correctly.

steve berta 06-13-2011 05:23 PM

thanks but what i find funny the bike was running perfect did not touch
it for a month waiting for parts then rebuild the bike installes the tank chain and sporket whent for a road test and that was it is it possible the rear chain got loose and valve timming is not in syn no more

seruzawa 06-13-2011 05:31 PM

Not likely that the chain would slip one cog.

You'd be better off searching for a site specifically dedicated to Honda V-4s. Maybe someone else has had the same problem.

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