How To Find Air Filter For 2012 Cummins 340 Isb

6.vii Cummins Diesel Engine Problems

The 6.7 Cummins diesel engine is the latest of the B series engines. It's a straight-6, 24 valve turbodiesel released for Contrivance Ram trucks in 2007. The B6.7 Cummins still lives on in Ram 2500 and 3500+ trucks to this day. Though, it's been through a few updates over the years. Equally of 2021, the 6.seven Cummins offers an impressive 400hp and 1000tq. Many also acquaintance the Cummins name with some of the best calorie-free truck diesel engines e'er. All the same, no engine is perfect and the 6.seven Cummins diesel fuel is no exception. In this article, nosotros hash out the most common issues on the Dodge Ram 6.7 Cummins engine as well as overall reliability.

5 Mutual vi.seven Cummins Problems

A few of the most common faults on the ISB 6.7 liter Cummins turbodiesel engine include:

Chock-full DPF
Turbo failure
Head gasket
Fuel dilution
EGR cooler

Issues with the Cummins 6.seven often come downwardly to emissions parts. Notwithstanding, the turbos and caput gaskets are known to run across occasional failures likewise. It's a skilful time to add a few notes that apply to this article. Nosotros're referring to these issues equally the most common. That doesn't necessarily hateful they affect a huge number of 6.7L Cummins diesel engines. Rather, when bug exercise happen these are a few of the most common.

Dodge and Ram trucks have too been using the 6.7 Cummins since 2007. Certain years may be more decumbent to these failures – specifically the before model yr Dodge and Ram trucks. It's natural for all engines to have a few kinks in their early years. Yet, many of the B6.7 Cummins engines endure from the above faults. Throughout the rest of this post we'll discuss each of the 5 problems in-depth and finish off with overall thoughts on Cummins 6.7L reliability.

Dodge Ram 6.7 Cummins Engine Problems

1) 6.7 Cummins DPF Bottleneck

Diesel fuel particulate filter (DPF) bottleneck is a mutual trouble on the Dodge, Ram 6.seven Cummins. Initially, Chrysler opted to avoid using diesel exhaust fluid (DEF). Without DEF the B6.7 diesel must run a little chip on the richer side to reduce NOx emissions. This in plough leads to more particulates (soot), which can quickly clog the DPF.

These clogging issues were and then problematic early that Dodge rolled out multiple PCM re-flashes in an attempt to reduce the occurrence. In 2013, Ram pickup trucks receive SCR emissions command systems along with diesel fuel frazzle fluid. This helps reduce particulates, so DPF clogging is less mutual on the later year half-dozen.seven Cummins. However, information technology still affects many trucks – especially as mileage builds up.

It's pretty bad for a turbodiesel engine to run with a highly clogged exhaust DPF. This causes a build-up of back-pressure for the 6.vii Cummins, which tin can atomic number 82 to more rut and stress on the engine. As such, information technology's important to ensure your 6.seven Cummins DPF is functioning properly. Some accept success in washing out clogged diesel particulate filters. Others make up one's mind to delete the DPF completely.

B6.7 Cummins DPF Clogged Symptoms

Symptoms that indicate the Dodge, Ram 6.seven diesel particulate filter is clogged include:

Power loss
Long creepo
Reduced power manner
Engine fault codes

One of the master symptoms y'all may notice is power loss on the 6.7 Cummins with a clogged DPF. If exhaust gases can't escape efficiently you'll take a build up in pressure. That causes the 6.vii engine and turbo to run poorly. This is peculiarly true if you terminate up in low power mode due to the 6.vii Cummins DPF clogging. Y'all may also notice long cranks or an engine mistake code.

Dodge, Ram 6.7 DPF Replacement

The DPF is an expensive piece of emissions equipment. Even a refurbished 6.7 DPF can run north of $1,000 while original filters are nearly double that. Dodge and Ram 6.vii Cummins owners take a few options. Aftermarket higher functioning diesel particulate filters exist, only those still often come in over $1,000. Some take success in force per unit area washing the OEM 6.7 DPF. Trying to clean the filter may not work at all, but if it does it's likely to be a shorter-term solution.

Ultimately, this leads some to become the road of completely deleting the 6.7 Cummins DPF with an aftermarket exhaust. This is definitely the easiest on the upkeep and most constructive long-term solution. Nonetheless, DPF deletes do come up with some legal concerns due to emissions.

2) B6.7 Cummins Turbocharger Failure

Turbo problems or failures are more than common on earlier model 6.seven Cummins engines. Even so, it tin can happen on any year as turbochargers naturally take a lot of abuse. Nosotros titled this section turbo failure, just in that location are a few problems that may not result in complete failure. A few issues that may occur with the 6.vii Cummins turbo include:

Leaking oil seals
Worn bearings (too much shaft play)
Sticking VGT parts
Compressor or turbine wheel damage

Every bit turbos historic period, leaking oil seals and worn bearings are among the about common issues. B6.7 Cummins turbos run in excess of 100,000 RPM'south. Over time, the half-dozen.seven turbo bearings may wear down and pb to excessive shaft play. If left alone the turbine or compressor wheel may contact the turbo housing and upshot in complete failure.

Since turbos run off incredibly hot exhaust gases it's of import to permit the oil to reach operating temperatures earlier pushing the Dodge Ram 6.vii Cummins too difficult. Cold oil splashing on hot turbo seals is a recipe for premature turbo seal issues. You should also permit the truck idle for a couple minutes before shutting downward the engine. This will assistance absurd the turbo.

Turbo problems tin pop up at any point, but it becomes much more common north of 120,000 miles. A turbo rebuild may exist possible. However, if your half dozen.7 Cummins is high mileage on the original turbo information technology may make sense to replace the entire turbo.

Dodge, Ram vi.seven Diesel Turbo Failure Symptoms

Look for the following symptoms that may indicate an event with the B6.7 turbo:

Slow spool
Poor performance
Excessive smoke from frazzle
Whining sounds

At that place are a few other possible symptoms, also. A sudden failure will typically result in drastic amounts of smoke and oil loss. Moderate smoke will also occur when the turbo seals are on their fashion out. half dozen.7 Cummins turbos failing over time will generally brand whining sounds, spool slowly, and not reach the target boost.

B6.7 Cummins Turbodiesel Turbo Replacement

New OEM turbochargers come in northward of $1,000 and oft close to double that cost. A remanufactured turbo volition run around $1,000 to $i,500. It'due south certainly non cheap. Yous tin find some high quality six.7 Cummins turbo upgrades for around the same price equally OEM, if not even cheaper.

Turbo upgrades are a skillful route to go – in our opinion. It will let you to extract a little more performance from your Contrivance or Ram truck. Nevertheless, turbo upgrades are notwithstanding a good option even if you lot want OEM functioning. A larger, more efficient turbo will have an easier task and should in theory hold upwards longer than the OEM turbo.

3) Contrivance, Ram vi.7 Cummins Head Gasket Issues

Head gasket problems on the vi.7 Cummins may non exist also common in actuality. Yet, compared to the previous 5.ix Cummins engines the B6.seven runs into the issue a lot more oftentimes. Part of it may have to do with the sheer power and torque the Dodge Ram half dozen.7 makes. High cylinder pressures may exist to arraign for the caput gasket failures.

Chances are caput gasket failures are somewhat blown out of proportion. In other words, it'southward likely not equally common as some may suggest. It'due south still worth the mention though since head gasket replacement can be pretty pricey. When the head fails some opt to upgrade the burn-rings and head studs to help go along the caput from lifting.

ISB 6.seven Head Gasket Failure Symptoms

Symptoms of a blown B6.vii Cummins head gasket include:

White'ish fume with sweetness odour
Oil mixed with coolant
Coolant mixed with oil
Overheating

A blown head gasket will likely allow coolant into the combustion chambers. This will issue in white smoke from the exhaust with a sweet smell from the coolant burning. Additionally, blown half-dozen.seven Cummins head gaskets tin allow oil and coolant to mix together. Higher pressure in the cooling system can also issue in rapid overheating and/or coolant pouring out of the tank.

6.7L Cummins Diesel fuel Caput Gasket Replacement

Replacement costs tin can vary depending upon the year and model of the Dodge or Ram truck in question. Fortunately, there is simply one head gasket thanks to the straight-six pattern. half dozen.7 head gaskets run in the ballpark of $100-200. Labor is where the costs begin to add up, and the repair can come up in excess of $one,000 all in. That's as well bold you lot're not upgrading whatsoever parts.

Some half-dozen.7 Cummins owners look to kits like this to avoid whatever potential issues in the future. The kits expensive especially when you add in labor. It's a expert idea to get with ISB 6.7 Cummins head studs at the to the lowest degree, though.

four) ISB 6.7L Cummins Fuel Dilution Issues

Alright – we'll speed things up a bit moving through these next sections. Some fuel dilution in the oil is natural on the B6.seven diesel engine. It'south inherent due to the mode the engine manages regeneration. This is the process in that particulates are trapped in the DPF and burned for cleaner emissions. The vi.7 Cummins does not utilise a 7th injector to introduce fuel into the exhaust. Rather, the fuel injectors spray some fuel into the frazzle stream during the cylinders exhaust strokes.

This allows minor amounts of fuel to stick to the cylinder wall where fuel tin then mix with the oil. Some fuel dilution occurs in almost all diesel fuel engines. All the same, some 6.seven Cummins diesels seem to have too much dilution. Dodge and Ram state the adequate limit at five% dilution.

Annihilation higher tin can be an issue since also much fuel tin interfere with oils job to properly lubricate and protect the engine. It won't cause any firsthand and severe damage on the ISB 6.7L engine. Nonetheless, it can consequence in premature wearable for engine internals.

Dodge, Ram six.7 Fuel Dilution Symptoms

There aren't normally whatsoever immediate symptoms of fuel dilution on the 6.7 Cummins. As such, it's a good idea to do an occasional oil assay. This will help you determine the rate of fuel dilution in your specific B6.seven diesel. Yous tin and so come up up with an oil change schedule based on that information.

How to Avoid Cummins 6.7L Fuel Dilution

A few ways to help forbid likewise much fuel dilution on the B6.vii Cummins include:

Permit engine to warm up
Avoid extended idling

Allow the engine to warm up before driving under heavy engine loads, such equally towing heavy weights. The fuel is less likely to stick to the cylinder walls on a warmer engine. Additionally, avoid idling the engine for extended periods of fourth dimension. This somewhat ties into indicate 1. If the Cummins 6.7L diesel fuel is left to idle besides long the cylinder temperatures drib. This will increase the amount of fuel sticking to cylinder walls.

5) half dozen.seven Cummins EGR Cooler Bug

EGR issues are a problem amid many modern diesel fuel trucks. The B6.vii Cummins is no exception hither. It's truthful most modern diesels primarily accept issues with a lot of the emissions related equipment. Every bit such, long-term diesel fuel owners are likely well aware of these problems. We'll go along this pretty brusque.

The EGR valve and cooler on the vi.7 Cummins is known to have issues, especially with higher mileage. Information technology's common for owners to simply delete the EGR arrangement when problems do pop upward. Of course, EGR delete tin have legal concerns due to emissions laws.

Sometimes cleaning the EGR valve will assistance alleviate issues. Though, it's ordinarily a good idea to replace or delete the parts – especially if your Contrivance or Ram 6.7 is college mileage.

Contrivance, Ram six.seven Cummins Reliability

Is the Dodge and Ram vi.vii Cummins engine reliable? Yes and no. The B6.vii diesel certainly doesn't have the same reputation as some of the older diesels like the five.9 Cummins or seven.3 Power Stroke. However, many modern diesel engines are in the same boat every bit the 6.7 Cummins. A lot of the emissions related technology can actually kill these diesels. DPF and EGR problems are a few of the emissions parts that can cause headaches on the 6.seven Cummins engine.

That said, the half-dozen.7 Cummins is a fairly reliable engine overall. This is especially truthful if you opt to delete some of the emissions equipment like the DPF and EGR systems. Beware of potential emissions or legal implications, though.

Otherwise, maintain your B6.7 Cummins well and information technology volition likely advantage you lot with a solid, reliable experience. It's a good thought to perform the occasional oil analysis to confirm fuel dilution. Work out an oil change schedule based on the results. Keep upwardly with other basic maintenance and stay on top of repairs equally six.7 Cummins failures occur.

Again, the 6.7 Cummins may not have the aforementioned legendary reputation as some of the older diesel engines. When well maintained the ISB vi.7L should still concur up well beyond 250,000 miles. Nosotros'll consider that pretty respectable longevity.

6.vii Cummins Common Problems Summary

The Dodge, Ram ISB six.7L Cummins is an impressive diesel engine. It was the starting time light duty truck to intermission into the 1,000 torque territory with the 6.7 Power Stroke following shortly after. In that location'south no question the six.7 diesel provides plenty of power and torque for virtually whatsoever owner. Nonetheless, no engine is perfect and this applies to the Cummins six.7.

It's mostly emissions equipment that brings the engine downwardly a piffling bit. EGR and DPF problems are mutual on the 6.7 Cummins – also as many other modernistic diesels. The sheer torque of the 6.7L engine can too cause issues with the caput gaskets failing. Otherwise, turbo issues are possible with higher mileage as they accept a lot of abuse. Fuel dilution is as well another expanse that tin be an outcome, but the occasional oil analysis will assistance mitigate the risks of dilution of the oil.

Dodge and Ram trucks with the 6.vii Cummins engine are pretty reliable, overall. Sure, it doesn't have the aforementioned legendary reputation equally older diesels similar the 7.3 PS or v.nine Cummins. Unfortunately, the emissions parts of the modern day work confronting reliability in many means. Nonetheless, maintain the 6.seven Cummins well and it shouldn't accept whatsoever bug eclipsing 250,000 miles.

What's your experience with the half-dozen.7L Cummins straight-six?

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Or check out our mutual bug post for the 5.nine Cummins