Kerlin
Member
2000 SeaDoo Challenger 2000 Mercury M2 240 EFI.
I've been having this ongoing issue where the boat will not plane out on the water. At full throttle the nose comes up, and it chugs along without ever powering up. Dr. Honda asked me this before, and I finally have an answer. It maxes out at 3k RPM's when the issue is observed. Here's the twist. Today it will not run right, tomorrow it might run just fine and it will run 6k RPMs without problem all day. When the problem occurs, it starts right up, but doesn't want to idle long before shutting itself off. Even when chugging at 3k RPM's there seems to be a lot of smoke. Yesterday on the water I had somewhat of a break thru from a diagnosis stand point. I spent the first 30 min running it maxed out at 3k rpms. Yesterday was the first time I decided to push the boat to see if I could get it to work right. I usually quickly give up and take it home fearing I'll damage it running it in this condition. So I'm chugging along and all of the sudden I feel it start to jerk, like it wants to power up. 3-4 jerks later, suddenly it kicks in and planes out. I spent the next 3 hours skiing, tubing, starting stopping, turning ignition off, on, no problems. I docked for about an hour to eat, then boom, back to no power again. This time it only lasted for a minute or two, then several jerks, planed out. What in the world would cause this??? Ok before you answer that, here is a list of what's already been done:
Throttle guardian disconnected
New spark plugs
compression test all in spec to the manual
new fuel lines from the tank, to the pulse, to the fuel pump, filter (everywhere)
fuel pressure test 36 psi (never tested when problem exists, always seems to run right when I rent the tester)
Rhinda Tech indicates CPU and all other electronics working correctly
TPS sensor tested within spec
Trigger assembly tested and within spec
Spark found on all 6 cylinders
Replace air temp sensor
Replace engine temp sensor
wear ring checked in good condition
intake grate free from debris, nothing on rod
Stator drained/replaced (no metal shavings or evidence, appeared clean)
Pump drained/replaced (same)
Replaced exhaust hoses
Stumped
I've been having this ongoing issue where the boat will not plane out on the water. At full throttle the nose comes up, and it chugs along without ever powering up. Dr. Honda asked me this before, and I finally have an answer. It maxes out at 3k RPM's when the issue is observed. Here's the twist. Today it will not run right, tomorrow it might run just fine and it will run 6k RPMs without problem all day. When the problem occurs, it starts right up, but doesn't want to idle long before shutting itself off. Even when chugging at 3k RPM's there seems to be a lot of smoke. Yesterday on the water I had somewhat of a break thru from a diagnosis stand point. I spent the first 30 min running it maxed out at 3k rpms. Yesterday was the first time I decided to push the boat to see if I could get it to work right. I usually quickly give up and take it home fearing I'll damage it running it in this condition. So I'm chugging along and all of the sudden I feel it start to jerk, like it wants to power up. 3-4 jerks later, suddenly it kicks in and planes out. I spent the next 3 hours skiing, tubing, starting stopping, turning ignition off, on, no problems. I docked for about an hour to eat, then boom, back to no power again. This time it only lasted for a minute or two, then several jerks, planed out. What in the world would cause this??? Ok before you answer that, here is a list of what's already been done:
Throttle guardian disconnected
New spark plugs
compression test all in spec to the manual
new fuel lines from the tank, to the pulse, to the fuel pump, filter (everywhere)
fuel pressure test 36 psi (never tested when problem exists, always seems to run right when I rent the tester)
Rhinda Tech indicates CPU and all other electronics working correctly
TPS sensor tested within spec
Trigger assembly tested and within spec
Spark found on all 6 cylinders
Replace air temp sensor
Replace engine temp sensor
wear ring checked in good condition
intake grate free from debris, nothing on rod
Stator drained/replaced (no metal shavings or evidence, appeared clean)
Pump drained/replaced (same)
Replaced exhaust hoses
Stumped
