L5740 smoke at start up

[MyJoBota]

Yes mine starts the same way. I am quite certain it's the result of the Teir 3 emissions package. This engine ( V2403-M-TE3) runs a Injection pump timing at 8.5* to 10.0* before T.D.C spec. for the H.S.T model. Now the (V2403-M-TE2) engine is what I beleive is the same engine but with Teir 2 emission package(No EGR) that would be found on older equipment runs a injection timing spec. of 16.0* to 17.5* before T.D.C.. This leads me to believe the difference in pump timing spec. betweem the two engines is direct result of emmisions. I would bet dollars to donuts a EGR delete and pump timing change of the Teir 3 tractors would make a world of difference in cold start and engine longevity.

 

[RFB]

It seems to be the consensus (so far) of the owners here that the EGR is a negative, as opposed to a neutral or positive attribute.

What would be really nice is if one of the GoodWrenches here would do a step-by-step removal of the EGR and retiming for some of the more mechanically challenged (me).

One of the other posters suggested the possibility of negatively effecting E G temps (by deleting the egr). Has anyone examined that issue in depth?

 

[bucktaker]

just an assumption on my part but I would think the control module would balk at egr removal unless you could reprogram it not to look for sensor data

 

[kuboman]

just an assumption on my part but I would think the control module would balk at egr removal unless you could reprogram it not to look for sensor data

There is no sensor data. A completely mechanical system.:thumbsup:

 

[5030]

Yep the pump, that thingy with the injector lines attached. It comes out as a module.
I too am old school and think a diesel should smoke. Although I am amazed at how much these 'low emission' engines smoke.:thumbsup:

I've never used the pre-heat on either Kubota and they both start in sub zero weather no problem, a direct result on a high compression start.

I like to dead crank them anyway. Gives a chance for the oil pump to deliver oil prior to light off.

My 3406/475 is the same. No plug in, good batteries and it alway starts with the same regimen.

Normally, the mechanical pump goes to 100% fuel rate on a cold start and then reduces fuel rate when the engine catches. FYI, the pump that Kubota licenses for their engines, is the same design that Caterpillar uses on pre-emission engines.

All this emission compliant stuff actually lessens engine life, especially the EGR system because it reintroduces unburned particulate matter back into the intake sysrem. The unburned matter (soot and combustion by-products) are very hard on intake plumbing and valves.

That's why all the engine manufacturers (that produce sngines for on-road/off-road use, have reduced their warranty period. The only way you can get an extended warranty for a Class 8 engine today is pre-purchase it and it's not cheap. Try $14,000.00 for an extended warranty (500K) for a DDEC (Detroit Diesel) 3-4 engine. Cummins engine is the least expensive at $5,000.00 per unit. Thats because Cummins engines meet the current EPA particulate standards with just EGR and a Catalytic convertor instead of the complex emissions equipment on DDEC engines, like the mechanically driven supercharger behind the turbocharger and the diesel reburn furnace in the exhaust stream.

Caterpillar stepped out of the on-road market entirely rather than dealing with it.

All the new engines run extremely hot, not cold and if you look closely at a new truck, you'll see the grill area has been substantially increased ro allow for added airflow to keep the underhood temperatures in check.

The new engines run so hot that some Freightliner Business Class models were dropped because the hoods were melting.

The reliability factor in diesels is going right out the window thanks to the Tier 3-4 emissions standards, all about protecting yourself from yourself because your government knows best......right

I work with this stuff everyday,,,,,

 

[bbraud6]

I know these new standards were implemented first on the high horsepower tractors, curious if these standards are in place for the lower horsepower yet or is the term interim for compact tractor emission mean they are in the process.

 

[kuboman]

I've never used the pre-heat on either Kubota and they both start in sub zero weather no problem, a direct result on a high compression start.

I like to dead crank them anyway. Gives a chance for the oil pump to deliver oil prior to light off.

My 3406/475 is the same. No plug in, good batteries and it alway starts with the same regimen.

Normally, the mechanical pump goes to 100% fuel rate on a cold start and then reduces fuel rate when the engine catches. FYI, the pump that Kubota licenses for their engines, is the same design that Caterpillar uses on pre-emission engines.

All this emission compliant stuff actually lessens engine life, especially the EGR system because it reintroduces unburned particulate matter back into the intake sysrem. The unburned matter (soot and combustion by-products) are very hard on intake plumbing and valves.

That's why all the engine manufacturers (that produce sngines for on-road/off-road use, have reduced their warranty period. The only way you can get an extended warranty for a Class 8 engine today is pre-purchase it and it's not cheap. Try $14,000.00 for an extended warranty (500K) for a DDEC (Detroit Diesel) 3-4 engine. Cummins engine is the least expensive at $5,000.00 per unit. Thats because Cummins engines meet the current EPA particulate standards with just EGR and a Catalytic convertor instead of the complex emissions equipment on DDEC engines, like the mechanically driven supercharger behind the turbocharger and the diesel reburn furnace in the exhaust stream.

Caterpillar stepped out of the on-road market entirely rather than dealing with it.

All the new engines run extremely hot, not cold and if you look closely at a new truck, you'll see the grill area has been substantially increased ro allow for added airflow to keep the underhood temperatures in check.

The new engines run so hot that some Freightliner Business Class models were dropped because the hoods were melting.

The reliability factor in diesels is going right out the window thanks to the Tier 3-4 emissions standards, all about protecting yourself from yourself because your government knows best......right

I work with this stuff everyday,,,,,

I owned a '82 Mercerdes diesel for years and it had an EGR even way back then. The first thing I did was disable the egr.
This emission crap is one reason I bought my Kubota now as to wait. Any of the emissions on my 5740 can easily removed. Once it gets incorporated into the electronics it becomes more difficult. The idea that we put all this junk on at the cost of efficiency and longevity really burns my but.
Now I am starting rant again.