Cat 3116

[Brandon_M]

Got a topkick dump truck with 3116 kitty cat. Holds great oil pressure, runs as strong as you can expect it to. But after you run it a while, like a hour or more you can smell oil burning & smoke coming out exhaust. Could this be seals in the turbo or is it something internal in the engine. Like I said I runs great & holds really good oil pressure.

 

[Dutchcat]

Is the smoke flicker/ pulsate?



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[Dutchcat]

Is the smoke flicker/ pulsate?



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Sorry, DOES!


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[Brandon_M]

It's like a puff of smoke not all the time, just when you pull out with a heavy load or every now in then when turbo is spooled up. Not constant smoking

 

[Dutchcat]

Did you check the endplay on the turboshaft?,
Maybe wiggle the valvestems a little to see if there is a lot of play, or worn valveseals


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[Brandon_M]

No I haven't checked anything yet. I was just wanting others opinions on it first, I'm by far not a diesel mechanic. Thanks for your help. Also the joints in the exhaust a real oily too.

 

[Dutchcat]

Could be both, turbo and/or valveguides/seals

Goodluck with your machine, really like the 3116 engines


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[Brandon_M]

Ok thanks Dutchcat for your input, atleast I know somethings to look for now. Thanks for your help Brandon_M

 

[Dutchcat]

Let me know when you have found the cause, kinda cureous


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[lantraxco]

Give the dipstick the sniff test, for diesel dilution, just in case.

 

[Brandon_M]

What would that be a sign of going wrong? I haven't noticed it, I check the oil often when I run it. Although I haven't actually sniff tested the dipstick. Lol

 

[lantraxco]

 

[Brandon_M]

That looks bad

 

[Truck Shop]

Too damn funny

Truck Shop

 

[lantraxco]

LOL, I'm not familiar with the 3116's internals but I have seen CAT engines that developed a fuel leak into the basement and when full enough with diesel would start to suck fuel into the intake through the breather system. Probably can't happen on that engine, but I developed a habit of sniff testing every dipstick I pull... the sound of a runaway four stroke makes a screaming gimmy sound like a weed wacker in terms of fear and panic!

 

[Birken Vogt]

What engines had a breather connected to the intake?

 

[Dutchcat]

Send in an sos sample then you know for sure,



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[lantraxco]

What engines had a breather connected to the intake?

The 3160/3208 for starters... I'm sure there were others.

 

[Dutchcat]

3116 doest breath in the intake


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