Chrysler 9.9 Issue

[rickjm]

I have a 1970 9.9 that runs great now that I had the water removed from the system and the carb cleaned out. The issue now is that it has a hard time restarting while hot. I let the motor cool down for about 20-30 minutes and it starts after a few pulls.

Any thoughts?

 

[ztim]

Re: Chrysler 9.9 Issue

I had the same problem with my 6hp. Turns out it was an overheat problem. I replaced the impeller and now am having the head gasket replaced as well.

 

[Frank Acampora]

Re: Chrysler 9.9 Issue

You can also try replacing condensers. Might help. OUCH! points and condensers 18-20 bucks each. 36-40 bucks for the pair. (two points, two condensers) Since it is running, points are probably serviceable. Try dressing the points and buying only new condensers. Condensers usually fail by shorting out when hot. When cool, they function again. Set points to .020 and be sure both are equal--a difference of .0015 is 1 degree different timing.

 

[rickjm]

Re: Chrysler 9.9 Issue

You can also try replacing condensers. Might help. OUCH! points and condensers 18-20 bucks each. 36-40 bucks for the pair. (two points, two condensers) Since it is running, points are probably serviceable. Try dressing the points and buying only new condensers. Condensers usually fail by shorting out when hot. When cool, they function again. Set points to .020 and be sure both are equal--a difference of .0015 is 1 degree different timing.

I'll start there. It's cheaper than jumping to the impeller and head gasket. Now I have to find a place to get parts. After a $250 bill for labor, I realized how beneficial it would be for me to learn to work on the motor myself. :redface: