Mercruiser 3.0 Alpha One Problem revised

[waterdogz]

Thank you to the persons that responded yesterday. I talked with an auto mechanic that advised me to check for any other inline filter. He stated that it sounded like a fuel pump due to it starving for air. He gave me a fuel pump gauge to check the amount of pressure coming off the load side of the pump. He said it should be between 3 and 5 and shouldn't fluctuate. After getting to the dock with tools in hand some friends inquired to what I was fixing. One of the guys told me that there is probably a second inline filter an to check for that. After some inspection and then some help from others I found a filter inside the carb. Followed the fuel line which is solid pipe to the carb and as it entered the carb there was a big brass fitting. Inside that fitting is what looks like a skimmer which has a spring on the back side. Sure enough it was clogged. It looked like at low idle it would allow fuel but when it called for a lot of fuel it starved the carb. The fuel line was seized and I had to break it to get it off so I will be out looking for someone tomorrow who can resize, flare, and rebend the fuel line to match the old. I think this is the solution. I will keep you up to date and hope this can help someone else down the road. Thanks to everyone.

Rick
International brother of Electrical workers 351 South Jersey.

[Zinski]

Hey, I am currently having the same problem with my boat. (Chaparral 1800 SL). The boat runs beautiful in idle and going slow. As soon as I go maybe 20 seconds planned off the engine starts bogging...thought it may be a dirty filter somewhere not letting enough fuel into the engine....Has the problem completly resolved since cleaning the filters? Did you disassemble and clean? Or did you replace?