1989 25 HP Idle and power surge problems

garr39

Recruit
Joined
Aug 1, 2004
Messages
1
I just bought a 1989 25 hp Johnson. It ran fine for first few times. But it is now exhibiting following problems:<br /><br />(1) Hard to start ( quite a few pulls to get it going )<br />(2) will not idle. If I turn handle to minmimum, it will cut out every time.<br />(3) after running for a bit, it will constantly lose and then surge in power. When it does this it will do it at any speed.<br /><br />Any ideas or suggestions? I am not an expert on engines, but if not to difficult I would like to try and fix myself.<br /><br />Thanks,<br /><br />Gary
 

hondon

Lieutenant Commander
Joined
Jun 11, 2001
Messages
1,922
Re: 1989 25 HP Idle and power surge problems

Take a fuel sample directly out of your fuel tank and let us know what you see.How old is that fuel anyway?If it is rancid or contaminated by water you will be looking forward to a carb rebuild.Have you done a compression or leakdown test?
 
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