truck advice

[houstonscott]

RMS failure is an engine failure.

 

[TMGT]

Please explain then because I couldn't find anything on the Google machine

 

[houstonscott]

Please explain then because I couldn't find anything on the Google machine

I can't teach you how to use a computer search engine. Google up reasons for a rear main seal failure.

 

[houstonscott]

This really disturbs me. I thought my Cummins had served me well for 14 years and 225,000 miles. Now I find out it's a ticking time bomb. I may not sleep tonight!:laughing:

I'll bet it's leaked into the transmission bell house and you don't even know. I'll bet it drips too. It's a design flaw in the engine. Two main reasons a RMS will fail, failed bearing on crankshaft, warped crank.

 

[houstonscott]

Please explain then because I couldn't find anything on the Google machine

you google up rear main seal failure on Dodge Ram diesels you'll find thousands. Go to a Dodge Ram forum and search. It's not a class action law suit yet, but it's close. Dealer are instructed that if it doesn't drip to ground not to honor warranty repairs. Good luck with that...

 

[TMGT]

I searched what you said to, "cummins rms problems", "cummins rear main seal problem" and and many variations of them but wasn't met with any real results.

If your going to make a one liner claim then I would think you'd be able to substantiate the claim or at least provide sources.

 

[houstonscott]

I searched what you said to, "cummins rms problems", "cummins rear main seal problem" and and many variations of them but wasn't met with any real results. If your going to make a one liner claim then I would think you'd be able to substantiate the claim or at least provide sources.

Rear Main Seal Leak??? - Dodge Diesel - Diesel Truck Resource Forums It took three seconds to get a 1000 hits.

You'll find those cranks are cast (cheaper) rather than forged. You can keep changing seal, but the engine is flawed. Makes no difference to me what you buy, or how you defend it, it's my recommendation that those engines are junk, and steer clear unless you want RMS leaks or failures.

 

[TMGT]

Ok, I saw that. It shows that people had rear main seal leaks, not an inherent flaw with the engine.
Out of curiosity I also googled powerstroke and duramax since I assume we are are refering to smaller truck diesels and got a just as many hits.

I've worked on a lot of different diesel engines including cummins including OTR and industrial and haven't seen any problems or patterns, that's why I'm trying to figure out your sources since the issue wasn't clear from your initial claim.

 

[dodge man]

To me its a flaw if its leaking so bad you have to start adding a lot of oil in between oil changes, say 2 quarts or more. I've been around a lot of engines, including a Cummins, and I've seen a lot of gaskets, seals and what not leak. I had a 70 Challenger with a 383 rear main seal that was a rope seal, probably the factory original, that leaked. Didn't mean the engine was junk. I've NEVER heard of a design flaw on the Cummins rear manin seal until this thread. Must be a problem on the newer 6.7 engines because I never heard of it on the 5.9's.

 

[houstonscott]

Ok, I saw that. It shows that people had rear main seal leaks, not an inherent flaw with the engine. Out of curiosity I also googled powerstroke and duramax since I assume we are are refering to smaller truck diesels and got a just as many hits. I've worked on a lot of different diesel engines including cummins including OTR and industrial and haven't seen any problems or patterns, that's why I'm trying to figure out your sources since the issue wasn't clear from your initial claim.

My research, obviously better than yours, I came to conclusion that you chance of a RMS on a diesel ram was very very high. Read up on why a RMS fails, it most certainly is the engine. Crank or bearings. Wobble is what makes it fail.