This is cross posted because it is driving me nuts.
E200TXETD
I've been working to resurrect thing engine that had been sitting for approx 10 years. Carbs done, new power pack, plugs, wires, coils, fuel pump (VRO Delete fuel pump from Offshore Marine), running on external tank. New Shift Cables, batteries, starter, starer solenoid, water pump, impeller, LU oil as well. After the Starter and Solenoid she turned over and started on the external tank. Compression on all 6 cyl are almost exactly the same between 95 and 100. My understanding is these loopers are lower compression.
I put the boat in for the first water test and she started great, idled great, slow speed great. Began throttling up and she started "bucking" at 3000 RPMs and wouldn't go past. Only way to describe it is like hitting a rev limiter. As per CDI troubleshooting i disconnected the tan wires from the temp sensors and no change. I tried to rev it past that RPM in Neutral (i know not supposed to! but i had to see if it was a gear issue) and same thing, 3000 RPMs.
Tried hitting the primer switch when the issue arose and the engine began to flood down, not rev up. I believe that removes a fuel issue. The Shift interrupt switch has the wires cut at the switch. So that's not engaging. There was some fraying of the connector for the black and yellow and black and orange wires under the power pack (stop circuit i believe) so i cleaned it up and direct connected with butt splices to rule out them grounding out. No help there either. The Timing plate rotates smoothly. And when the engine does its 3000 RPM cut out the timing light does flash at 18 degrees as it should. Idle is give or take 4 degrees. Also - did confirm spark on all cyls at idle - have not checked under throttle.
I'm going to remove the flywheel today and check all of the magnets. But besides that i am out of thoughts!
I am incredibly lost at this point. And would appreciate any advice.
E200TXETD
I've been working to resurrect thing engine that had been sitting for approx 10 years. Carbs done, new power pack, plugs, wires, coils, fuel pump (VRO Delete fuel pump from Offshore Marine), running on external tank. New Shift Cables, batteries, starter, starer solenoid, water pump, impeller, LU oil as well. After the Starter and Solenoid she turned over and started on the external tank. Compression on all 6 cyl are almost exactly the same between 95 and 100. My understanding is these loopers are lower compression.
I put the boat in for the first water test and she started great, idled great, slow speed great. Began throttling up and she started "bucking" at 3000 RPMs and wouldn't go past. Only way to describe it is like hitting a rev limiter. As per CDI troubleshooting i disconnected the tan wires from the temp sensors and no change. I tried to rev it past that RPM in Neutral (i know not supposed to! but i had to see if it was a gear issue) and same thing, 3000 RPMs.
Tried hitting the primer switch when the issue arose and the engine began to flood down, not rev up. I believe that removes a fuel issue. The Shift interrupt switch has the wires cut at the switch. So that's not engaging. There was some fraying of the connector for the black and yellow and black and orange wires under the power pack (stop circuit i believe) so i cleaned it up and direct connected with butt splices to rule out them grounding out. No help there either. The Timing plate rotates smoothly. And when the engine does its 3000 RPM cut out the timing light does flash at 18 degrees as it should. Idle is give or take 4 degrees. Also - did confirm spark on all cyls at idle - have not checked under throttle.
I'm going to remove the flywheel today and check all of the magnets. But besides that i am out of thoughts!
I am incredibly lost at this point. And would appreciate any advice.
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