Home › Forum › Ask A Member › Pulsating 15hp detuned down to a 9.9 question › Re: Pulsating 15hp detuned down to a 9.9 question
I have the original carb, but a fuel supply issue is something I wouldn’t expect when de-tuning, if anything, I would expect a flooding/blubbering issue. This is why i am reaching out to the powers-that-be on this one.
What compounds this head-scratcher is the changing over generations of the carb follower arm diameter. In the dozen or so of these I’ve worked on, they’ve all been 9.9 -> 15 conversions, and they’ve all been pretty straight forward.
I know the ’74-76 models are known to be, basically, the worst motor OMC ever made, so this is why I am so curious. Am I missing something about the ignition system that would account for this situation?