Only one cylinder is firing?

[chris lyons]

I have a 45 HP Chrysler motor that has only one cylinder firing. I think I have tracked it to the points but I am not for sure. I know it is not the coil, spark plugs, or the spark plug wires. I have 12 volts getting to both coils and I know it is not the coils that are bad. Any feedback would be greatly appreciated. Thanks!

 

[DJ]

Re: Only one cylinder is firing?

chrysler,<br /><br />How do you know it's not the coils. Did you try swapping them?<br /><br />If so, it could be the points (doubtful) or the condensor.

 

[chris lyons]

Re: Only one cylinder is firing?

djohns-<br />yeah, i bought a new coil, thinking that was the problem, and i have swamped both of them and i get the same results. you don't think it could be the points? i just don't know what else it could be. i have volts getting to the coils and i have swamped them and that one cyclinder still doesn't fire. i also checked the wires and the spark plugs. what do you think?

 

[scotiany]

Re: Only one cylinder is firing?

Is yours a battery ignition or magneto or something else?

 

[chris lyons]

Re: Only one cylinder is firing?

It has a battery ignition.

 

[skeets]

Re: Only one cylinder is firing?

Hi 33<br />Did you do a compression test?

 

[DJ]

Re: Only one cylinder is firing?

chrysler,<br /><br />In that case, you may have voltage to each coil, however your points may not be breaking that current to fire the plug.<br /><br />It's rare for a set of points to actually fail. The wear themselves out of adjustment, but rarely fail. With that said, one set of points may be grounded.

 

[scotiany]

Re: Only one cylinder is firing?

I bought a brand new set of points and condensers from boatingsolutions.com. They were only 28.95 plus shipping.(Chrysler 55-1970)