What I have:
1988 Force 85 hp On a Bayliner Capri 1700 (856X8A)
What I have done:
-Checked compression 125 on all cylinders when cold
-checked all ground and ignition wires for solid connections
-replaced Trigger
-replaced all fuel lines and bulb
-checked for spark - have good spark on all cylinders
-replaced fuel pump diaphram
-removed and cleaned all carbs and replaced needles.
-checked and adjusted timing.
My problem:
-When I first get on the water, my motor starts and idles perfectly. It takes me about 10 minutes of idling to get to the wake zone. When I get there I can hammer down plane out and run @ WOT for about 2-10 minutes depending on the heat and my load in the boat I believe. After letting it sit or idle for a few minutes the motor will take off great at WOT and planes out, but then boggs down after 20 seconds or so. I can then return to 3/4 throttle and it runs fine as long as I do not increase the throttle past 3/4 throttle, If I increase the throttle past ?, the motor boggs again. If I leave the throttle at WOT too long it completely fouls the Top #1 cylinder and can no longer even run at 3/4 throttle. After checking all three plugs it is only the #1 Plug that is very dark and dirty.
- I have been told that one coil could be heating up and failing. At the end of the year last year I took it out by myself (light load and colder weather) and the motor held up for twice as long as it did with heavier loads and warmer weather.
-Could I have a float sticking?
-Cracked/Brocken Reed ( I inspected them when I removed the carbs but forgot to look underneath with a mirror and light)
I posted this under a different title early today and NMShooter mentioned I should try switching the Coils and that maybe a needle is not seating correctly. I forgot to mention in my other thread that I replace the needles and that I did just that with the coil. This was my response.
Thank you NMShooter.... I forgot to mention that at the end of the year last year I did exactly that. I switch coil #1 with #3 and the #3 plug looked to be the problem then and fouling. Today I got a new coil in the mail right after I started this thread. I installed it and hit the water immediately.
Here is what happened. It started perfectly and idled perfectly out to the no wake zone as before. I hit throttle slowly to WOT and it planed out for 3-4 seconds then it began to pulse. I realized I hadn't pumped the bulb on my fuel line so I killed the motor pumped the bulb and took off. I ran at WOT for about twenty minutes. Slowed to an idle for about 5 min and took off again at WOT for another 1-2 mins. After that I figured I stopped and started 5 times like I would if I was pulling a wakeboarder. She did great until the 6th time. At that point she began to pulsate. It seemed like one cylinder wasn't getting enough gas. I left it running and pumped the bulb to no avail so I shut the motor down and opened the cover. I didn't see any problems so I pumped the bulb again while the motor was off. I started her up and she ran perfect for another 5 min. I did the start/stop thing again with the same results. About the 5-6 time she failed again. I shut it of and pumped the bulb then she took off and ran perfect again until I did the start stop thing again. I repeated this one more time with the same results.
Could I be getting air in my fuel line. I found one place right before my fuel pump that looked like it was a little blue/wet with fuel. I do not have a clamp on this line and that is the first thing I am going to do tomorrow. I have checked my tank vent.. It is clear.
When I pump the bulb while the motor is off, I can hear fuel spraying/leaking out and I can see fuel leaking out. Is this just an overflow that should be there or is there a problem somewhere.
-could one of my needles I replace be bad?
_could I be sucking air into my fuel line?
1988 Force 85 hp On a Bayliner Capri 1700 (856X8A)
What I have done:
-Checked compression 125 on all cylinders when cold
-checked all ground and ignition wires for solid connections
-replaced Trigger
-replaced all fuel lines and bulb
-checked for spark - have good spark on all cylinders
-replaced fuel pump diaphram
-removed and cleaned all carbs and replaced needles.
-checked and adjusted timing.
My problem:
-When I first get on the water, my motor starts and idles perfectly. It takes me about 10 minutes of idling to get to the wake zone. When I get there I can hammer down plane out and run @ WOT for about 2-10 minutes depending on the heat and my load in the boat I believe. After letting it sit or idle for a few minutes the motor will take off great at WOT and planes out, but then boggs down after 20 seconds or so. I can then return to 3/4 throttle and it runs fine as long as I do not increase the throttle past 3/4 throttle, If I increase the throttle past ?, the motor boggs again. If I leave the throttle at WOT too long it completely fouls the Top #1 cylinder and can no longer even run at 3/4 throttle. After checking all three plugs it is only the #1 Plug that is very dark and dirty.
- I have been told that one coil could be heating up and failing. At the end of the year last year I took it out by myself (light load and colder weather) and the motor held up for twice as long as it did with heavier loads and warmer weather.
-Could I have a float sticking?
-Cracked/Brocken Reed ( I inspected them when I removed the carbs but forgot to look underneath with a mirror and light)
I posted this under a different title early today and NMShooter mentioned I should try switching the Coils and that maybe a needle is not seating correctly. I forgot to mention in my other thread that I replace the needles and that I did just that with the coil. This was my response.
Thank you NMShooter.... I forgot to mention that at the end of the year last year I did exactly that. I switch coil #1 with #3 and the #3 plug looked to be the problem then and fouling. Today I got a new coil in the mail right after I started this thread. I installed it and hit the water immediately.
Here is what happened. It started perfectly and idled perfectly out to the no wake zone as before. I hit throttle slowly to WOT and it planed out for 3-4 seconds then it began to pulse. I realized I hadn't pumped the bulb on my fuel line so I killed the motor pumped the bulb and took off. I ran at WOT for about twenty minutes. Slowed to an idle for about 5 min and took off again at WOT for another 1-2 mins. After that I figured I stopped and started 5 times like I would if I was pulling a wakeboarder. She did great until the 6th time. At that point she began to pulsate. It seemed like one cylinder wasn't getting enough gas. I left it running and pumped the bulb to no avail so I shut the motor down and opened the cover. I didn't see any problems so I pumped the bulb again while the motor was off. I started her up and she ran perfect for another 5 min. I did the start/stop thing again with the same results. About the 5-6 time she failed again. I shut it of and pumped the bulb then she took off and ran perfect again until I did the start stop thing again. I repeated this one more time with the same results.
Could I be getting air in my fuel line. I found one place right before my fuel pump that looked like it was a little blue/wet with fuel. I do not have a clamp on this line and that is the first thing I am going to do tomorrow. I have checked my tank vent.. It is clear.
When I pump the bulb while the motor is off, I can hear fuel spraying/leaking out and I can see fuel leaking out. Is this just an overflow that should be there or is there a problem somewhere.
-could one of my needles I replace be bad?
_could I be sucking air into my fuel line?
I ran the boat today and it may have been the most rewarding trip I have ever taken. I believe that much of the work I did before this was definitely not a waste of time or money. I know there were multiple electrical issues I fixed but If I learned anything from this, it would be to: 1. get on this website and create your own thread explaining your situation, 2. take your time and double check your work before moving to the next possible problem. I spent a long time reading old threads relating to my issues and working off of them but it only took me a few days to eliminate the most recent problem I had after starting this post.