544 hydro diesel running rough

philcase

Member
I have an International 544 Hydro diesel. I bought it for the slow speeds needed for pulling a transplanter. I also use it with my corn planter and rototiller and a few other utility jobs. It has run well for the 4 years I've had it but began acting up this year. After running for a while it will begin running rough (like a gas engine missing). The rpms will bounce up and down 50 to 100 rpms. Occasionally it wil rev up for a second then settle back down. Today i was rotiling at about 1800 rpms and it ran good for over an hour. Then it started running rough,orse than usual jumping between 1800 down to 1500 or less rpms. It would recover quickly but then just as quick do it again. I finally lowered the throttle to about 1550 and it ran smooth and gradually began to build up speed as I rototilled. finally I pushed it back up to 1800 and it ran ok for another 1/2 hour then started running rough again. I finished and got back to the shed but it wouldn't run smooth fast.
When I transplant I run about 900 - 1000 rpms. Anything else I like to run 1800 or faster. This engine only has 1865 hours on it. So what are your thoughts? Fuel filters, governor, injectors, pump, air cleaner, something else? I'm going to start with the filters and see what happens.
Phil
 
Hi Phil, engine is fuel starving. Check fuel tank cap that it is letting air into tank, next fuel filters and next fuel flow out of fuel line from the fuel tank as there could be junk in the bottom of tank blocking the outlet.

JimB
 
My thoughts also. Once I had my CIH 885 act up like that. Drained the fuel tank and it was full of lady bugs. Seems they are attracted to diesel or at least small dark cavities like the hose on my bulk fuel tank. I put a filter on end of the nozzel (piece of panty hose) and didn"t have any more touble. Got a new pump and didn"t replace it. (Hey honey, do you have any old.....?) LOL thanks
Phil
 

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