1990 90hp Johnson Problems

[agood1]

This motor runs fine when I 1st get in the water...and will run all day as long as I don't shut it off...but if I do shut it down...it will not restart...the starter spins the motor fine...but there is no fire. I have had this happen twice now...and been towed back to the trailer....and when I get home and connect the water ears...she fired right up....Can someone give me some ideas on how to troubleshoot this problem...<br /><br />Thanks

 

[agood1]

Re: 1990 90hp Johnson Problems

Bump....Please help.<br />Thanks

 

[JB]

Re: 1990 90hp Johnson Problems

Ahoy, AGood1.<br /><br />When you shut the engine down after a good run the temperatures in the block rise for a while because cooling water is no longer circulating. This causes the parts under the bonnet to reach higher temps than when running.<br /><br />I suspect that your ignition system has a heat failure under these conditions. Take the bonnet off and crank her up on muffs. Heat the ignition parts with a hair dryer. If I am right the engine will quit when you heat the bad part. . . like a powerpack or trigger.<br /><br />Good luck.

 

[agood1]

Re: 1990 90hp Johnson Problems

Thanks JB....I will give that a try...I think I know what the power pack it....but was is the trigger?

 

[JB]

Re: 1990 90hp Johnson Problems

It is under the flywheel, Agood1.<br /><br />Hard to get heat to. Be real careful.

 

[agood1]

Re: 1990 90hp Johnson Problems

Is the trigger the same as the stator?

 

[Stumpknocker]

Re: 1990 90hp Johnson Problems

My friends 70 did the exact same thing as yours. Replaced the powerpack and it never happened again.