A few pictures (so far) of the engine work - eventually I will share wiring info and other details (if anyone is interested?) should anyone else ever need to swap an engine in one of these. The replacement engine is a Harbor freight $750 special 670cc, (lawn mower/industrial type lump) with a few minor upgrades. Should have it back together soon, bolted in. The cold weather slows me down!
OK here goes. I have a cub cadet volunteer with a fuel injected Kohler lh775. This was brought to me from another shop since they couldn't figure it out.
Here's their story.
came in for a water pump. tech pulled the intake and a few other misc parts and replaced the water pump. Reassembled and the motor was missing on cylinder 2. replaced several parts and just couldn't get it to run on both cylinders.
So in my shop we checked compression 155ish on both cylinders at wot. I can get the motor to start if I hold the gas pedal in just the right place but at low RPM's it very rough.
Pulled side cover and verified timing is correct and key ways are not sheared
turned over motor with injectors out and they spray evenly and the same. best I can tell by eye
installed new plugs and got motor to start and held it at higher RPM's for a few seconds. cylinder 1 plug is dark cylinder 2 is still new and seems damp with gas
switched coils from 1-2 installed new plugs again and same test with same results.
The other shop replaced the ECU and harness. No matter what parts I switch from cylinder 1 to cylinder 2 the problem stays on cylinder 2.
Any thought or ideas would be greatly appreciated
By Mike McDonald
I have a 2013 Intimidator with a 750 Kohler V2 engine. In the future I thought about swapping the engine with something that has more power.
Does anyone have experience with engine swaps? Also what about swapping it with a motorcycle engine. Mine has the CVT with a 2 speed transmission. This was the first edition of the Intimidator and they basically used a lawn mower engine, so it’s a loud and runs 30 mph tops.
Earlier this year my battery was weak and I had to boost my mule to start it then I decided to remove the battery to check the fluid level which was very low, I set the levels and recharged the battery a few months later it did the same thing, so I had to boost it again then checked the voltage running was getting around 16 vdc ( which is too high) and fluid level was very low again and wouldn't hold a charge. Note: The battery was maybe 1-1/2 years old. Then I replaced the battery and checked the voltage running nothing changed I was only reading battery voltage it wouldn't increase with increased engine speed. I changed the voltage regulator with an aftermarket one, same thing not charging. I checked the alternator per the service manual which states .3 ohms or less it checks at .2 ohms and not shorted to ground. With the engine running I disconnected the alternator and it had around 22 vac idling and around 60 vac revving the engine, so I figured the regulator was bad so I replaced it with another new one (aftermarket) from a different company, again not charging only reading battery voltage. I did put the original voltage regulator on nothing changed still not charging. Using the manual wiring diagram did continuity checks going to the voltage regulator everything checks out OK. Now what am I missing?