Turbo Spooling problem

The aftercooler on a 11 year old boat, has it ever been serviced? If not, it can be giving so much back pressure nothing will work right because air can't pass through in enough volume an what does get through is too hot (lean).
 
I am trying to get a RingPower mechanic out this week to take a look. I am not convinced I have a turbo or aftercooler problem. My main reason for seeking help here is that I am very pressed for time as I am scheduled to take a trip to the Keys on 7/7. I am not sure I can get RingPower out in time and do not want to start replacing very expensive parts just to find out I still have the same problem.

After reviewing boatdiesel.com. This lag seems to be vary common and has to do with a aneroid. The symptoms do seem more like a fuel issue to me. I have no smoke when the lag is occurring and I have no issues when no load is applied. If the turbine was hitting the housing or the aftercooler was clogged wouldn't I still see the issues with no load? Does anyone know if the Cat 3196 has an aneroid?
 
I just have to chime in here. Now I do have diesel experience however on a C-16 CAT in a Peterbilt. Back to the OP. If it is an intermitent problem then I would expect the turbo is the failed part. He said he had conciderable shaft end play so he may be digging the blades into the "snail" Thusly having an intermitent failure. Now as far and the aftercooler (Mine being and air to air type, big radiaror) if it was leaking presure or restricting air flow the results would be the same every time. Also plenty of black smoke. ( I just had my Exhaust fixed today. I'll post that question i have in a few) See What bites.
As far as the aftercooler having a defect from factory, thats for u marine diesel guys to figure out. That's out of my realm.
 
seahawk said:
I have a 1998 480 Sedan Bridge with Cat 3196 TA engines. The STBD turbo seems to be having trouble spooling up. At first it was a little sluggish in matching the port engine RPMs with the engine sync on. It would however catch up in a couple seconds. This past weekend, it did not spool up at all on the first or second try. Came up fine on the third and forth attempt and down again on what was my last attempt.

Just to make sure it is not something as simple as a dirty air filter I am have it changed before I look at replacing the turbo.

Has anyone had a similar problem and what was the result?
Click to expand...

_____________________


Hello,

Sounds for sure like you have a turbocharger problem. We commonly service marine turbochargers here at our Fairfield, NJ facility. Often clients complain of the same issue, up throttling on one engine. Depending on the service hours, service intervals, charge system leaks, contaminated oil its common for one turbocharger to fail before the other. Even with twin turbochargers on one engine, most times one fails while the other is fine.

Knowing when to "fold-em" can save the operator a considerable amount of cash. People seem to think we can rebuild anything, unfortunatley when a turbocharger is catostrophic most times it cannot be rebuilt economically.
Catching the problem immediatley is the difference between a $600.00 overhaul or a new 1500-2500$ factory replacement.

Call us if you have any questions, we serve the tri-state located in Essex County, New Jersey.

Thank you,
Sean Kinch

Scroll Products
111 Clinton Road Unit 6
Fairfield, NJ 07004
973-227-1274
 
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