I have a 1983 Mariner 150 HP , V6 outboard serial 6424779 that I'm having some issues with.
Here's the rundown:
1. Bought the boat, previous owner said it ran great....... i know... that never happens
2. Determined 3 cylinders weren't getting spark and replaced three coils. Verified all cylinders getting good spark.
3. Started motor, determined water pump was bad
4. Replaced water pump, now pumps good, and idles great (little smokey)
5. Went to lake, here's where the problem occurs:
I started the motor and let it idle for ~5 minutes to get things going, idled just fine with no issues. Put boat in reverse to back off trailer, stalled (bogged down not instant stall). Restarted and tried to use the idle throttle (neutral) and throttle it up I'm able to apply gas for only a short while then it does the same exact thing and stalls out.
When it stalls it's not instant, it's also not a typical bogging down, very abnormal from my experience (all with smaller motors). For all intensive purposes the fuel tank and fuel has been tested and working in another boat, and the lower unit has new gear lube.
We looked at the screen in the fuel pump and it's completely clean, the large jets in the carb's are also completely clean, there wasn't a spec of anything in them certainly nothing that would cause this problem.
When it stalls out the ball remains hard,then the boat will immediately start back up without doing anything, and idle.
Usually I have the opposite problem where the motors won't idle but once you get going they work just fine.
What should my next steps be ? I don't have a whole lot of money to spend on just taking the thing to a repair shop...
Thank you for any assistance you can provide, I would genuinely appreciate a little help here, dying to get out on the water.
Here's the rundown:
1. Bought the boat, previous owner said it ran great....... i know... that never happens
2. Determined 3 cylinders weren't getting spark and replaced three coils. Verified all cylinders getting good spark.
3. Started motor, determined water pump was bad
4. Replaced water pump, now pumps good, and idles great (little smokey)
5. Went to lake, here's where the problem occurs:
I started the motor and let it idle for ~5 minutes to get things going, idled just fine with no issues. Put boat in reverse to back off trailer, stalled (bogged down not instant stall). Restarted and tried to use the idle throttle (neutral) and throttle it up I'm able to apply gas for only a short while then it does the same exact thing and stalls out.
When it stalls it's not instant, it's also not a typical bogging down, very abnormal from my experience (all with smaller motors). For all intensive purposes the fuel tank and fuel has been tested and working in another boat, and the lower unit has new gear lube.
We looked at the screen in the fuel pump and it's completely clean, the large jets in the carb's are also completely clean, there wasn't a spec of anything in them certainly nothing that would cause this problem.
When it stalls out the ball remains hard,then the boat will immediately start back up without doing anything, and idle.
Usually I have the opposite problem where the motors won't idle but once you get going they work just fine.
What should my next steps be ? I don't have a whole lot of money to spend on just taking the thing to a repair shop...
Thank you for any assistance you can provide, I would genuinely appreciate a little help here, dying to get out on the water.
