ON THE WATER! Replaced the switchbox. While I was at it, I replaced the impellor as well. Cranks and runs like a new motor thanks to good advice from iBoats forum and iBoats parts. THANK YOU
UPDATE on my ignition troubles.
I have spark at two bottom cylinders and no spark on top two cylinders.
I reversed the wires from the trigger to see if the spark moved. Swapped purple wire and brown wire and white wire with white/black wire. Still had spark on bottom two cylinders and no...
Looks like I need a new stator, which is exactly what Murphy's law would predict, since it is the most expensive potential culprit.
Tested the stator and got 53 ohms between the top wire and the bottom wire, which appears to be just slightly out of spec.
Tested the stator resistance between...
Thanks. You were correct, the problem appears to be something other than coils. Yesterday I switched coils between 3rd cylinder, which had spark, and 1st cylinder and checked for spark on the 1st. Unfortunately there was no spark. So I will start checking upstream in the electrical system...
racerone,
Thanks for your reply. I feel like a complete doofus for not checking the spark to bein with! Would have saved a lot of trouble. Now I still have to fix the ignition problem and I probably will have to take at least one of the carbs back off because I think I set the float too low as...
ARRRGH! The last mechanic who worked on my boat was certain that ethanol in the gas had ruined the fuel hoses so he replaced all the hoses. He also replaced the spark plugs and checked compression. I assumed that he was correct about fuel delivery being the problem so when it still didn't run...
Update on my aggravating engine troubles. I put the boat in the water to see if my carburetor rebuilds solved my problems. Motor cranks easily and runs well at low speed. Unfortunately the problem with high speed operation was not fixed. At any speed up to about half throttle it runs great. When...
Hi racerone,
Thank you for your response. I decided to reassemble the carbs using only the gaskets and diaphragms that came with the kit. I then pressure tested them by hooking them to the fuel tank and pumping the bulb. They didn't leak so I am planning to reinstall them on the engine this...
Hi, hoping for a little advice regarding my carburetor rebuilds. I am rebuilding the carburetors on my 1985 Mercury 50 hp two-stroke using QuickSilver kits part number 1395-9023. The top carb is stamped WMA3.1. The rebuilds have gone well so far with one exception. The kits have one less gasket...
