Pros/cons of tier 4?

[kuboman]

Im a master technician in the automotive world and work on a lot of the new diesel trucks. Im not a fan of any of the emmision stuff, but it has brought many benefits to the diesel engine. Direct injection, high pressure oil/fuel systems and electronic control modules have made diesel's much more fuel effecient and cleaner. The problem comes from the treating of the exhaust, Im starting to see tons of problems with DEF fluid systems ( this is where you add a fluid into its own tank and its pumped into the exhaust), there is a large amount of sensors and controls for these system to work properly. I personally like the direction JD went with the EGR system and no DEF fluid(this is what the 5085e has). You will find at the end of all the emmision BS all of them will end up with DEF systems of some sort. I just finished 2011 chevy duramaxx that had DEF problems with the DEF tank, 1100.00 later all lights are off the dash.[/QUO

The higher hp JD now have it all. And they all have a whole mess of sensors. Believe me the JD system is not simpler.

 

[genesusie]

Covered under the EPA mandated emissions warranty?

That is what makes me uneasy about the equipment, anything that goes haywire and you are at the mercy of the dealer and manufacturer. The other issue most states refuse any dash lights or code for vehicle inspection.

Now I get the same uneasiness with a tractor. I prefer to be independent and fix stuff myself. I guess I was born too late.

 

[calhoun9001]

Im a master technician in the automotive world and work on a lot of the new diesel trucks. Im not a fan of any of the emmision stuff, but it has brought many benefits to the diesel engine. Direct injection, high pressure oil/fuel systems and electronic control modules have made diesel's much more fuel effecient and cleaner. The problem comes from the treating of the exhaust, Im starting to see tons of problems with DEF fluid systems ( this is where you add a fluid into its own tank and its pumped into the exhaust), there is a large amount of sensors and controls for these system to work properly. I personally like the direction JD went with the EGR system and no DEF fluid(this is what the 5085e has). You will find at the end of all the emmision BS all of them will end up with DEF systems of some sort. I just finished 2011 chevy duramaxx that had DEF problems with the DEF tank, 1100.00 later all lights are off the dash.[/QUO

The higher hp JD now have it all. And they all have a whole mess of sensors. Believe me the JD system is not simpler.

I was just talking about the OP question of the JD 5085e being simpler. It does not use DEF fluid, uses EGR. These are much simpler systems compared to the DEF systems. I agree they all suck, but it has put a lot food on my table. Lol

 

[calhoun9001]

Covered under the EPA mandated emissions warranty?

Unfortunately for the customer vehicle was out of warranty due to milage.

 

[PCABE5]

Just for interest on some of the higher horse power engines(not deere) they tuned the engine for max efficiency and then add DEF. There is no emissions crap on the engine they just treat the exhaust. Far better way of meeting the regulations than the route JD has taken.

Who's engines do this? Haven't seen one without egr.

 

[kuboman]

Caseih, New Holland, Sisu, etc

 

[arlen4720]

There is no emissions crap on the engine they just treat the exhaust. Far better way of meeting the regulations than the route JD has taken.

Where I come from, we call DEF "emissions crap". I would take egr over DEF any day of the week.

 

[kuboman]

Where I come from, we call DEF "emissions crap". I would take egr over DEF any day of the week.

Burning 30% exhaust gas in a diesel just seems counter productive to me. Adding some pee into the exhaust and running the diesel the way they were meant to be run seems like a better idea. jmho

 

[RickB]

Burning 30% exhaust gas in a diesel just seems counter productive to me. Adding some pee into the exhaust and running the diesel the way they were meant to be run seems like a better idea. jmho

I agree. I've never been a fan of crapping where I eat. Most DEF systems are timed and fueled very closely to Tier II engine levels, which by and large were more responsive and efficient than Tier III. Unfortunately, space requirements for DEF systems is a big deterrent to putting that technology on smaller engines.

 

[Tx Jim]

Covered under the EPA mandated emissions warranty?

Does EPA cover DEF repair cost after warranty expires? No