Mahindra 4530 problems

[Kbaer]

I think I have eliminated the fuel as a problem. I changed both filters. Tractor ran great until it warmed up to around 140 degrees then the same problem. Think the problem is with the timing advancement sensor.

[cdover73]

Originally Posted by BobG_in_VA

Dumb question: Does't the 4530 have drain plugs at the bottom of each fuel filter? My 6000 does...ie all you would have to do is slowly drain all the "water" out of each filter rather than change the filters...PS that "cracked" line that was mentioned sounds weird to me....BobG in VA

Yes, the 4530 has 10mm bolts on the bottom of the fuel filter canisters that allow you to drain them.

[Kbaer]

Well it turns out I had several problems. Problem number one was bacteria in the fuel system. Solution was having the tank and fuel system flushed and then adding anti-bacterial (my dime since the dealer said Mahindra doesn't cover fuel issues and they won't admit that the tractor had the bacteria when it left the dealership even though I told him the next day that I saw some black sludge in the water separator). After doing this the tractor would run great for 20 minutes (I timed it) and then start missing and sputtering. If the tractor was turned off and restarted it would then run great again for 20 minutes and same thing. At this time the Mahindra rep finally agreed it was a timing issue. I did notice the colder the outside temp the worse the problem. At sub-zero temps the engine would miss extremely bad but as the outside temp warms up the missing and sputtering comes less apparent.

[MDM]

Why all of these timing issues? This is one of several I have read about on TBN with these Mahindras. Does it have something to do with the climate being different from where the machines were manufactered? I just don't understand the what causes a machine to be out of time?

I worry about bacteria cause I store my fuel in a 55 gal drum. I can't seem to find any type of anti-bacteria additive locally. I use a Mr. Funnel when I transfer from fuel drum to tractor, and I haven't noticed any bacteria yet.

[SPYDERLK]

Originally Posted by MDM

Why all of these timing issues? This is one of several I have read about on TBN with these Mahindras. Does it have something to do with the climate being different from where the machines were manufactered? I just don't understand the what causes a machine to be out of time?

I worry about bacteria cause I store my fuel in a 55 gal drum. I can't seem to find any type of anti-bacteria additive locally. I use a Mr. Funnel when I transfer from fuel drum to tractor, and I haven't noticed any bacteria yet.

I think the timing sensitivity is because of a warmup issue. Timing is advanced for several minutes after starting. Then, when it retards, the diesel is very subject to cold stacking unless the engine has warmed to the operating range. I find it difficult to keep mine warm enuf in cold weather to prevent this, and a minor bump up of timing helps. I would sure like to see them use a better thermostat. - My Kubota diesels dont have this problem.
larry