kghost
Silver Medal Contributor
My friend just purchased a brand new 29 year old 18 ft checkmate with a 350 260 hp mercruiser.
only 20 hours of use and garage kept the whole time. Show room condition.
I have gone thru everything and it stats and runs very good.
I replaced the carb base gasket and needle and seat and accelerator pump.
NOTE: I did not remove and disassemble the entire carb. removed the top cover and replaced the needle and seat and acc pump and gasket only then lifted the carb up and slipped in a new base gasket.
Anyway once warmed up it will idle at 800 and run for sometimes 20 seconds, sometimes 10 seconds and then it will drop 200 rpms to 600 rpms. Give it a bit of throttle and it will repeat.
I have adjusted the cable to put positive pressure on the throttle and idle mixture screws work correctly and have been adjusted.
Any Ideas
only 20 hours of use and garage kept the whole time. Show room condition.
I have gone thru everything and it stats and runs very good.
I replaced the carb base gasket and needle and seat and accelerator pump.
NOTE: I did not remove and disassemble the entire carb. removed the top cover and replaced the needle and seat and acc pump and gasket only then lifted the carb up and slipped in a new base gasket.
Anyway once warmed up it will idle at 800 and run for sometimes 20 seconds, sometimes 10 seconds and then it will drop 200 rpms to 600 rpms. Give it a bit of throttle and it will repeat.
I have adjusted the cable to put positive pressure on the throttle and idle mixture screws work correctly and have been adjusted.
Any Ideas