89 GT200 Power Loss After it Warms Up

jhow0228

Petty Officer 3rd Class
Joined
Sep 15, 2012
Messages
91
I will post my results as soon as I get off the water. Probably later this evening. I am concerned that I might be replacing a voltage regulator too since I too have been getting some sporadic tach readings. But it could've been caused by the power surging coming off the failing power pack. The regulator that is on it now is definitely newer than the motor since it is CDI branded, but I'm not sure when the previous owner replaced it.
 

jhow0228

Petty Officer 3rd Class
Joined
Sep 15, 2012
Messages
91
Sorry for the delay Ben. Has been a little hectic for me lately. I finally got the boat out last Sunday. The power pack has fixed the issue of losing power after motor gets warm. But it still wasn't getting to wide open. Mechanic adjusted timing and all was set. Decided to pull and clean carbs. They were very clean except blockage in high speed jets on cylinders 1 and 4. Probably explains why motor wouldn't turn more than 4800rpm. Should be able to lake test tomorrow.
 

jhow0228

Petty Officer 3rd Class
Joined
Sep 15, 2012
Messages
91
Power pack and a carb cleaning was just what it needed. Ran like a champ today.
 
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