#5 cylinder sieze-up????

[Texas Diesel]

After I parked my CTD at a RV park, a man walked over and commented on my truck. He said that a fishing boat that he had owned once had two Cummins ISB engines in it. On two different occasions he had the #5 cylinder sieze. It seems, according to him, that it is common knowledge amongst fisherman that the ISB engine will sieze #5 if the engine is not brought up to normal operating temp before putting a load on it. He said something about the #4 and #6 cylinder "squeezing" #5. It would take forever to warm up the engine at idle as he said I must do. Anyone else heard this?

 

[Scooby]

He's right in that you want to bring the engine up to operating temp. prior to putting a load on it, but the engine won't warm up at idle. In fact you can damage your engine by long idling after initial start up.

 

[Alan Reagan]

I'm in the Coast Guard Reserve and I board shrimp boats all the time. They are running Cummins, Detroit and Cats. I've never heard of the #5 seizing from any of these guys. During the winter we do hundreds (literally) of fishing vessel exams. I always and I mean always go in the engine room and we end up talking about the power plants. Most CAT owners are switching to Cummins simply because of the cost of maintenance of the CAT. Now keep in mind, I've seen these shrimp/fishing boats sink in salt water and as soon as they can refloat, the oil is changed and the engine cranked. Sometimes they have problems later but not usually. They get back to the docks, flush out the oil, change the filters again, make repairs and are back in business.

 

[merryman]

With all the casual users of these engines reprsented on this board, it such a seizure problem were at all common, it would have happened to some of us. How many of us hook up to a trailer, fire up the engine and go! How many such seizures have we read about here?



Vaughn

 

[Vaughn MacKenzie]

Vaughn, I only remember reading about one since Jack Nutter overfueled his and toasted cylinder #6. But of course that wasn't because he got on it with a cold engine, he was towing pretty fast uphill with a BOMBed engine and bad EGT gauge



Vaughn

 

[SnoKing]

When did Cummins start using the ISB in marine engines. The Diamond Addition B Series is a 12 Valve, inline pump engine. I have two 4B150/155's (two valve heads), and have friends with B5. 9's in 210 to 370HP ranges, all are 12 Valve engines.



http://www.cummins.com/na/pages/en/products/marine/recreational/diamond.cfm



Maybe he was talking about the:



A Quantum Leap Ahead... If performance on the cutting edge of technology is your idea of a good engine, check out the QSM11 available in ratings of 535 and 635 horsepower* (399 and 474 kilowatts). The QSM11 features the Cummins Quantum System, one of the most sophisticated electronic engine management systems on the market today. The Quantum System actually optimizes combustion for increased power and performance, as well as delivers engine information, diagnostic and prognostic data. Sounds like a 10. 8L ISB!



Snow King

 

[trning]

seizing up

The company I work for has Thousands of these engines nation wide and we have probably a hundred in our area and they are pretty much bullet-proof. I have virtually seen the trucks fall apart around them. We have them in Kenworths, Fords, and Freightshakers. None of them has any major engine problems.