KAMA 454 engine dies when warm...
- Thread starter rhallman
- Start date
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BlueChip...The pump doesnt seem to get very hot. I can put my hand on it with no problem. Ill try cleaning it again this morning....But in the end I may be buying a new one from you.
Any pics on doing the replacement so I dont mess up the timing marks?
Thanks...
Any pics on doing the replacement so I dont mess up the timing marks?
Thanks...
Smalljobs
Gold Member
If this were mine, I'd consider carefully marking/photographing everything and taking the governor apart to look for any kind of clue such as broken springs, wear, sticking parts, chips/shavings, etc. I'd do it with clean tools, good lighting, and a clean indoor workspace. Maybe something obvious might show up.
I'd first try to get a feel for the actual temperature of the governor at quitting time. One of those digital BBQ food thermometer might do it. Suppose it quits at 150F. I'd bring it in the house and look for smooth operation of the shaft. Then I'd put it in the oven at perhaps 100F and check it again and then 125F and so on. Maybe something is sticking at a given temperature. Then I would see if something like WD-40 would help. If no luck, I'd proceed to take it apart.
I'd first try to get a feel for the actual temperature of the governor at quitting time. One of those digital BBQ food thermometer might do it. Suppose it quits at 150F. I'd bring it in the house and look for smooth operation of the shaft. Then I'd put it in the oven at perhaps 100F and check it again and then 125F and so on. Maybe something is sticking at a given temperature. Then I would see if something like WD-40 would help. If no luck, I'd proceed to take it apart.
Smalljobs
Gold Member
An after thought is in case there is fuel inside the governor, I would simply double bag it in two locking freezer bags and slowly heat in a pan of warm water.
Bob Rooks
Elite Member
The problem doesn't seem to be with the fuel injection pumps because the engine accelerates and decelerates without any problem.
The governor and injector pump assembly are two distinctly different and separate mechanisims that are bolted together. The hand throttle controls the governor setting to a pre determined speed, the governor moves the injector pump rack gear in and out against the sector gears on the pump pistons, rotating them in conjunction with the cam lift. There is no mechanical connection between the hand throtle and the injector pump rack.
I speculate that if the issue were actually temperature related then there are close tolerance issues in the governor possibly in the flyweight carrier.
On some engines it is possible to remove the governor from the fuel injection pump assembly without removing it from the engine, thus not disturbing any timing settings. This type of operation is best left to a skilled technician, but if you feel confident then have at it.
The governor and injector pump assembly are two distinctly different and separate mechanisims that are bolted together. The hand throttle controls the governor setting to a pre determined speed, the governor moves the injector pump rack gear in and out against the sector gears on the pump pistons, rotating them in conjunction with the cam lift. There is no mechanical connection between the hand throtle and the injector pump rack.
I speculate that if the issue were actually temperature related then there are close tolerance issues in the governor possibly in the flyweight carrier.
On some engines it is possible to remove the governor from the fuel injection pump assembly without removing it from the engine, thus not disturbing any timing settings. This type of operation is best left to a skilled technician, but if you feel confident then have at it.
