09-04-2022, 05:06 PM
(09-04-2022, 12:07 PM)Gone Forever Wrote: I can see that the spark advance is moving and that the trigger on the stator is good. It does appear that the spark advance stops before the throttle bottoms out.
The PO told me that when he rebuilt the carbs he jetted it for altitude, which Mercury says is 4,000 or above. He used the .041 jet. >043 and .045 are available. (I have them already).
As far as weight, this is a 16' aluminum. Pretty light weight overall. I go 250 and my buddy is about 180, so load should not be a problem for a 45hp on that boat. Prop is a 9x14. PO said 30mph at the Berry.
Well that is likely the problem right there, the PO rebuilt it. On my last boat I took it in to a shop to have the carb rebuilt, it did just what yours is doing after it was rebuilt. The shop could not get it back in, so I brought it up on BFT and a member said he would take a look at it. We went out to Willard and after we took it out, he said the float was not adjusted correctly, we brought it back in, he adjusted it and it ran fine after that. You should ask the PO if he had ever rebuilt a carb like that one before or if there was a possibility that he adjusted it wrong. If it ran fine before he rebuilt it, then that has to be the problem or at least something else he did wrong when he rebuilt it.