miss through all rpm's????

[GETDANET]

my brother has a mid 80's force 15 hp.It sometimes developes a miss , it does it in all rpm ranges . we changed the points and condensers and it still does it.It dosen't happen all the time. If you pump the bulb fuel will drip out the front of the carb and the throttle cam on the carb is very lose.can air get n the carb through this area ???If the carb has an air leak could this be the culrit <br /> .

 

[omctech]

Re: miss through all rpm's????

rebuild the carb, re-sync and link the motor, and go from there.

 

[GETDANET]

Re: miss through all rpm's????

what do you mean by re sinc and link??? whats your thoughts on the throttle cam being lose ,can extra air get in through there causing it to get to lean and miss ???

 

[alcan]

Re: miss through all rpm's????

Hi GETANET<br />Sync and link means to syncronize the throtle opening to the ignition advance. the throtle cam is mounted to the timer plate. It should not be loose. Did you loosen it to install points etc? You might have a worn float valve, or just some crud in it. Float may need adjustment. Check fuel line conector make sure o-rings are good. This is where they suck air most often.

 

[GETDANET]

Re: miss through all rpm's????

we didn't losen the timing plate but there is a space between it and the throttle cam , and the trottle cam is very loose . can this be tightened somehow or does he need a new carb?????

 

[alcan]

Re: miss through all rpm's????

Getanet can you explain what you mean by throtle cam, seems like were talking about differnt things. Are you refering to the throtle shaft? Also if you could give me the mod# it would help. Sorry I am confused.

 

[GETDANET]

Re: miss through all rpm's????

I'm probrably using the wrong term to desribe the part .it is the rod that rides aginst the timing plate to open the throttle plate in the carb .I don't know the model # the motor is my brothers .I think it is a 1984 . thanks for the reply and the patiance