Interesting info. Perhaps I’ll pull the prop and check for debris. I have had seaweed around it several times. Let you knowIm getting bubbles from the 4 small holes above the cavation plate at all power settings....what are these holes for? good water flow from P hole runs fine...
THANK YOU for the reply! The top of the engine is back to 95%, and I'm moving again.Hi,
Here's my take on what you've stated...
I think you're probably correct about the carb needing additional attention for your power issue. I hope the solvent you're soaking in doesn't damage the plastic parts on the carb though.
I've cleaned many of these carbs and I've always used "carb spray" with excellent results. But...I was warned by a VERY experienced and knowledgeable Honda tech that not all "carb spray" is of the same formula and he said I was probably getting away with not damaging the carb because I'm in California. His shop was in Ohio and his username here was the much respected hondadude. He recommended using brake kleener spray instead.
Your 9.9D model has an accelerator pump system under that little rubber bellows on the side. It supplies a passage in the main carb body that feeds a brass tube that juts out into the air stream at the front of the carb throat. When cleaning the carb you MUST find the very tiny spray nozzle at the end of that tube that faces rearward and sprays fuel on initial throttle application.
You can only observe that spray orifice through the rear of the carb throat when the throttle linkage is held/propped wide open.
If that nozzle won't spray a stream of pressurized cleaner out the rear of the carb to a distance of 6 to 8 feet....YES!...6 to 8 FEET... then your outboard will never make full power or run well.
For your P hole plugging constantly, you will likely need to remove the right side lower cover, take off the P hole delivery tube and then remove the fitting for that tube from the engine block and briefly start the outboard. Anything trapped in there (that you're likely just shoving down with the trimmer string) will be almost instantly ejected by the force of the stream. It gets everything wet but if you submerge the outboard in a trashcan of fresh water it won't hurry anything and reliably clears that passage. That is....until the next time. All small outboards will eventually need this little operation from time to time. Or...you can keep using the fairly ineffective string trimmer line over and over and over.
...before removing the lower cover study the routing of that little tube VERY carefully. If not reinstalled in the correct way. It can be pinched when you reinstall the cover.
That little tube is supposed to be soft and flexible. If it isn't, it will catch small debris and plug too. It can drive you mad.
I replace that tube every 3 or four seasons on mine for that reason.