mercruiser 7.4

rchjr

Recruit
Joined
May 12, 2012
Messages
1
my mercruiser 1989 inboard wont run on cylinders 1 4 6 and 7 whats up with that?
 

Josh P

Petty Officer 1st Class
Joined
Aug 26, 2009
Messages
328
Re: mercruiser 7.4

you should post some maintenance history if any , did it do it last year? did it just start? how old is the fuel? Its odd that is every other cylinder in the firing order... i would suspect an ignition component
 

Lyle29464

Lieutenant
Joined
Mar 10, 2009
Messages
1,261
Re: mercruiser 7.4

some of them used an outboard power pack. I would start there.
 
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