Case 430 high altitude issues

[sidewaysboy]

Just purchased a 2007 430 with 190 hrs. I live at 9,000 ft elevation, the unit seems to backfire/miss when it is put under a load. Puffs out pretty dark when it mis-fires. Unit has a new fuel filter, treated fuel. Is there some kind of adjustment for high altitude? I noticed that in the case parts manual there is reference to a mis-fire upgrade kit, what is it and do I need it. Thanks for your help

 

[Tazza]

This is diesel or petrol?

 

[skidsteer.ca]

This is diesel or petrol?

Air filter is clean?
Ken

 

[sidewaysboy]

Air filter is clean?
Ken

Unit is a Diesel 4.5 liter non-turbo. Air filter is brand new and clean.

 

[skidsteer.ca]

Unit is a Diesel 4.5 liter non-turbo. Air filter is brand new and clean.

Sorry no idea on the mis fire kit. Never heard of such a thing. You may have to ask you Case dealer on this one. A naurally aspirated engine will tend to trun rich at those altitudes, do you have any idea if this may have already been compensated for? A turbo would have been a better choice for hi altitude but yours still shouldn't mis. Wonder if it could be a bad injector? Does it smoke when run at a idle sitting still? Or only when it is working hard at high rpm it misses? or always at high rpm? Can you work it at 3/4 throttle and have it run ok.
Ken

 

[Tazza]

Sorry no idea on the mis fire kit. Never heard of such a thing. You may have to ask you Case dealer on this one. A naurally aspirated engine will tend to trun rich at those altitudes, do you have any idea if this may have already been compensated for? A turbo would have been a better choice for hi altitude but yours still shouldn't mis. Wonder if it could be a bad injector? Does it smoke when run at a idle sitting still? Or only when it is working hard at high rpm it misses? or always at high rpm? Can you work it at 3/4 throttle and have it run ok.
Ken

I don't understand it either, i cant see a diesel having a problem running rich or lean as it draws in the same air charge every time unlike petrol engines that use a butterfly to limit the air coming in..The only difference is the amount of fuel that the injectors spray into the air charge. I thought the only difference would be the idle and top speeds may be lower.
I wonder if it could be a simple excess fuel adjustment on the engine, these are factory set but at high altitudes they may need adjusting? a call to your local dealer may clear that up?

 

[goose]

There have been some issues with the injection pump tinging on the 430 machines were they miss at full throttle. You will have to have a dealer check the timing sinse there are some special tools required and the procedure to do it is a little complicated. There also was a service bulletin about high alltitude problems. I couldnt find it on assist but can get it on monday when I get to work.

 

[ksss]

There have been some issues with the injection pump tinging on the 430 machines were they miss at full throttle. You will have to have a dealer check the timing sinse there are some special tools required and the procedure to do it is a little complicated. There also was a service bulletin about high alltitude problems. I couldnt find it on assist but can get it on monday when I get to work.

I have had the same issues when running between 9-10K feet with a 440. It turned out the fuel was leaned out too much. The temp. was minus 30-40 below zero. Unknowningly to me the diesel I was filling up in my tank in the back of my truck was straight 1. I thought it was blended 2. I then further mixed it with Amsoil deicer. Needless to say it would miss, run rough. I took the machine off the mountain, ran a couple tanks of straight #2 through it and it was fine.