83 cb900 honda

[kiwi cowboy]

had it covered up for a while and got it out to start it up for a run and can only get it going on no 1 and 2 cylinder 3 and 4 are not.
now ive taken number 4 plug out and it looks damp so assume its getting fuel?.
has good blue spark on no 4 so assume 3 is to [cant get it out unless take tank off].if it was a coil or electrical like that would'nt it affect both cylinders on that coil.1 and 4 , 2 and 3.
was going good about a month ago.
any sugestions

[Taz]

Try some new plugs.

[Bonez]

Check for corrosion on either end of the HT leads too. The pointed contacts in the coils and plug caps have a habit of corroding over time.

[kiwi cowboy]

had it covered up for a while and got it out to start it up for a run and can only get it going on no 1 and 2 cylinder 3 and 4 are not.
now ive taken number 4 plug out and it looks damp so assume its getting fuel?.
has good blue spark on no 4 so assume 3 is to [cant get it out unless take tank off].if it was a coil or electrical like that would'nt it affect both cylinders on that coil.1 and 4 , 2 and 3.
was going good about a month ago.
any sugestions

Check for corrosion on either end of the HT leads too. The pointed contacts in the coils and plug caps have a habit of corroding over time.

put new plugs in all go now but the plugs were only put in 50ks ago

[FJRider]

Give the old plugs a GOOD clean and try them again...check gaps etc.

[Bonez]

put new plugs in all go now but the plugs were only put in 50ks ago

Not bad considering 30k should be the norm . Did you drain the carbs first before trying to fire the old girl up?

[kiwi cowboy]

Not bad considering 30k should be the norm . Did you drain the carbs first before trying to fire the old girl up?

aaah i ment 500kms ago but no i didnt drain carbs lazy i know.
the plugs were clean but i think the were brideging across and shorting with wet ends. cheers have put the one hotter plugs in.
will jusy have to get here out more often bugger bugger