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1997 150 hp johnson #13414289 01/23/20 08:11 PM
Joined: Apr 2009
Posts: 103
johnson Offline OP
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Posts: 103
wont run over 2000 rpms ; the compression on all 6 cyl are 90 to 80 . any answers that may help thanks

Re: 1997 150 hp johnson [Re: johnson] #13414470 01/23/20 11:36 PM
Joined: Dec 2005
Posts: 4,712
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gander Offline
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Joined: Dec 2005
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Probably not much help but I had a 150 Merc with the same issue and a stator had to be replaced to fix it

Last edited by gander; 01/23/20 11:37 PM.
Re: 1997 150 hp johnson [Re: johnson] #13414604 01/24/20 02:06 AM
Joined: Apr 2008
Posts: 12,330
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PaulGrapevine Offline
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You checked compression. There is still fuel and spark. Assuming it does not sound like itโ€™s starving for fuel then Iโ€™d check spark. I had something similar and the power pack had gone bad causing loss of spark on one side.

Re: 1997 150 hp johnson [Re: johnson] #13414820 01/24/20 01:06 PM
Joined: Sep 2010
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boatwhisperer Offline
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enginr is in s.l.o.w. mode.. speed limited overheat warning check temp sensors first if they check good replace the power pack

Last edited by boatwhisperer; 01/24/20 01:08 PM.

boatwhisperer
Re: 1997 150 hp johnson [Re: johnson] #13414970 01/24/20 02:54 PM
Joined: Jul 2010
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boatman025 Offline
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We can check it out for you I have found bad temp senders and also a bad wiring harness


Hughes Marine
3855 Osage Lane
Wylie ,Texas
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