turbo chargers


The readings I'm looking for are from the mechanic testing. He should have measured turbo boost, fuel pressure and would hope exhaust restriction pressure. If not exhaust restriction at least look at the exhaust components.

The helm station gauges are general status but will not supply info needed to diagnose the current problem. With the motor blowing smoke is telling me something is either fooling the smoke limiter, it's damaged or has been misadjusted. The throttle linkage (don't know if it's digital or cable) should be moving the injection pump lever to full.

Just to reconfirm: both motors were running fine before this happened. There were no issues with power or smoke prior to current problem?

Then one day there was a lack of power and smoke and the rest is listed in this thread
 
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Do me a favor and check your running gear. Your symptoms are typical of a stressed motors. Black smoke is a clear sign you are not burning off all your diesel at combustion. How much would it hurt to have your diver check your bottom and running gear. Maybe you are dragging something, or a zinc has loosened. It is ODD that both motors are reacting the same way.

I've already been "scolded", but I firmly believe your problem is drag. Maybe your diver has gotten lazy or a less experienced diver has taken over. It is not uncommon for diver to skip cleanings in the winter, since barnacles do not grow in colder water.
 
Well, now there is only smoke from port. I looked at the props and they are super clean. I will send an email to the owner of D&B Divers to see what he thinks.

"tanks",
Divergirl
 
In answer to AllDodge...yes, all was fine until there was no power and smoke....how do I get pics from my phone to this post?
 
Hey all.....out sea trialing after fuel polish, changing racors and secondary filters....still only getting 14 RPMs. Oil pressure fine, temp fine, etc. BTW,,,,are there fuel shit offs for the engines on the 2002 41 PC? We only see shut off at the racors?
 
I'm also leaning toward the controller is not advancing the injection pumps to full throttle. Take the boat out and have someone go in the engine compartment and another move the throttles full out. Then slow and stop the motors. Disconnect the linkage and see if they can manually be moved further
 
Thanks AllDodge...we were out today and the guy was in the engine room while I was running. One problem we are having is that there seems to be no shut off for the engines,,,,do you know anything about this?


Both engines are at 1400 RPM, even unsinced, which has everyone stumped. Now the SB engine is smoking slightly....not thick....not black.....with the floor open we can hear the port turbo whistling away but the SB is a slight whistle.
 
Divergirl said:
Thanks AllDodge...we were out today and the guy was in the engine room while I was running. One problem we are having is that there seems to be no shut off for the engines,,,,do you know anything about this?
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Need some more clarification on the phrase no shut off valves? The injection pump causes the fuel to stop flowing to the injectors and that is how the engines are shut down.

Both engines are at 1400 RPM, even unsinced, which has everyone stumped. Now the SB engine is smoking slightly....not thick....not black.....with the floor open we can hear the port turbo whistling away but the SB is a slight whistle.
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This started shortly after the controller was replaced. The controller moves the throttles on the injection pumps. This is way I'm starting to wonder if they are not moving them past the 1400 rpm mark. Need to find out if the injection pump lever is moving to full throttle
 
I I am talking about how to cut off the fuel from leaking all over from the engine lines it keeps dumping into the bilge... is there no way to stop fuel when you're switching around fuel lines on the engines
 
Ok we have checked all the most likely. I went back and read your initial post. On that post, you mention that you just had an oil change.
I will assume you have checked that your oil levels are ok? (on the dip stick). If you have not, I would check that!

I am not familiar with Volvo's, but maybe yours have a "safety" system that sets itself to a guardian mode if something is not right with oil level, pressure, temp, or water flow. If your Volvos do, I would start looking and those systems. If they do not, maybe changing the oil on one engine to see if there is a difference, would be one step. I suggest this only because that is the only change between running good and your problem. Obviously if you take this step, make sure you fill with the Volvo recommended oil and to the correct level.
 
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One more thing. When you changed the oil, I assume you changed oil filter. Make sure you used the right filters to your Volvo's.
 
Thanks guys....just back from vaca...no, not aboard drat! Something I did find through reading up on stuff is that one thing that had everyone stumped was that both engines only get up to 1400 rpm, full throttle. There were a lot of comments about why both engines were performing the same. Well, the port turbo is spooling nicely and whistling away and the SB slightly and that is because the port engine will not carry the full load for both engines so, it is running the same as SB because it will not "make up for" the lack of performance of SB.

Yes, I have checked the oil levels and all filters were changed.

"tanks",
Divergirl....the saga continues.
 
Anyone know what a "boost pressure sensor" is? The guy currently working on the turbo problem says he needs to order one and so I asked what it did and he said "hopefully fixes your boat".
 
Divergirl said:
Anyone know what a "boost pressure sensor" is? The guy currently working on the turbo problem says he needs to order one and so I asked what it did and he said "hopefully fixes your boat".
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Don't know of a boost pressure sensor on the TADM 41, not saying there isn't one, just cannot find it.
I'm still leaning fuel issue because I don't have any numbers from testing

You did make a good point in post 55 about the port motor is doing OK, but cannot handle all the load with the starboard motor unable to lift the load.
 
Hi Divergirl. My boat went in today. So far all good. Just drove it to the slip but didn't take it for a shake down run yet. Any word on the turbos?
 
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