Merc 1500 inline 6 power loss/rpm changes

adamcomputer

Recruit
Joined
Jul 29, 2006
Messages
3
:/Don't know if anyone has had the problem. For a few years and more $$$ than I care to count with 'repair outfits', my 150hp Merc inline 6 ran good sometimes. But most of the time it would rev up fine (unless idling for long periods as in no wake zone)and then at full throttle, jump up and down by 300-400 rpms. Finally took control myself and 1. rebuilt fuel pump, 2. replaced coil (only 1 of how many ?) Motor seems to run fine (out 1 time since) although need to lean out carbs a little yet I think. Question is, does my cure sound plausable ??? OR am I barking up the wrong tree ??
 

SpinnerBait_Nut

Honorary Moderator Emeritus
Joined
Aug 25, 2002
Messages
17,651
Re: Merc 1500 inline 6 power loss/rpm changes

Welcome to iboats.
Post your question in our Mercury/Mariner repair forum for more answers.
 

rndn

Commander
Joined
May 20, 2007
Messages
2,323
Re: Merc 1500 inline 6 power loss/rpm changes

Yes it does sound like a possible solution.
 
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