25hp Johnson ongoing issues UPDATED

[imported_bowfisher]

Finally got back to this motor I was having troubles with a few weeks ago.

Motor would not turn off with the key switch, replaced the power pack under the flywheel and now it shuts off. It will not rev up though.

Called Sierra to have the pack replaced, ordered a new pack thinking the replacement I ordered originally was bad out of the box.

Pack number two showed up, installed it, the same symptoms occur, wont rev up, acts like its hitting a rev limitter or going into SLOW mode.

Put the original pack back on (that wont shut off with key switch), motor revs up as it should.

So.... two new packs, same symptoms. Having a hard time believing two packs in a row could be bad.

Sierra part number 18-5794

Thoughts?

 

[cajuncook1]

Re: 25hp Johnson ongoing issues

Re: 25hp Johnson ongoing issues

Please post the year and model number of your motor, so we can better assist you. You may have posted the information before, but that is a different post and this forum plays host to hundreds and hundreds of different post a week.

It is like starting over.

 

[imported_bowfisher]

Re: 25hp Johnson ongoing issues

Re: 25hp Johnson ongoing issues

1990 Johnson 25 HP short shaft electric start
Sorry forgot about that

 

[imported_bowfisher]

Re: 25hp Johnson ongoing issues

Re: 25hp Johnson ongoing issues

UPDATE:

Two bad Sierra power packs, both new in the box.

Replaced the pack with CDI brand and it now runs like a new one. Would have never thought I would get two new bad packs in a row.

Thanks!

 

[AlTn]

Re: 25hp Johnson ongoing issues

Re: 25hp Johnson ongoing issues

thanks for posting back with the results..those UFI ignitions are hard enough to straighten out w/o having to deal with a bad pp right out of the box

 

[cajuncook1]

Re: 25hp Johnson ongoing issues

Re: 25hp Johnson ongoing issues

UPDATE:

Two bad Sierra power packs, both new in the box.

Replaced the pack with CDI brand and it now runs like a new one. Would have never thought I would get two new bad packs in a row.

Thanks!

Yes CDI brand is of good quality. Will have to watch out for the Sierra power packs! Dang, two bad power packs in a row eh...

Thanks for updating us!!