Volvo TAMD61A smoking.

No direct experience of the 61A but I think the general consensus would be not to judge at first start up cold. take it out for a run at power and if it still smokes after its warm it might be more cause for concern. Certainly my own TAMD41As smoke more than this when first fired up but when warm are fine. The 41A is known for this though. As I understand it later engines with higher compression ratio are less smokey at start and when slow running. Others with more specific 61A experience will be able to add to this I am sure.
 
Not being of the Volvo persuasion, look pretty typical of smokey start up to me......

However the clueless person who did the exhaust riser set up needs shooting!

Looking at Youtube shots of your risers they have water inlet on section pointing upwards therefore never drain.

Classic case of eventual corrosion of inner exhaust riser section allowing sea water to run back into turbocharger housing, rust blisters form inside inside turbine nozzle cause blade damage.

What sort of numpties do they employ to install these things, and why on earth does Volvo sign this junk off!
 
Smoke amount looks about right for old 61a when cold starting, the manifold heater may not be working as fuse blows quite easy and relay fails quite often.

I see manifold riser is a bit home made, though
Pols like they have done it that way to minimise the uncooled area of pipe, not good when the inner sleeve rots away water will for sure run into the turbo for sure, also I don't like the stern gland feed pipe either, if it fall off water will run straight into the bilge.

What make and model of boat is it?
 
This is the boat... Azimut 37
Care to have a stab at a ballpark figure to put it right, assuming no turbo damage?
I've already put in an offer, just waiting for the seller to get back to me. If he accepts I'll have a full mechanical survey for sure.
 
I'd def have a full survey on an azimut, all the ones here around the Solent seem to have a block booking in the osmosis shed! Ay just over 5 years old.

I presume your looking to keep the boat abroad? As you could buy a nice princess 410(mine) similar boat similar motors, here in the uk.
 
Your Princess looks lovely but it's a little over my budget and I want to be somewhere warmer and less rainy.
 
adey said:
Below is the video of the boat I looked at earlier this week. Is this smoke cause for concern? The engines are 1991 and the clocks show 1,000 hours.

http://youtu.be/sx8lfnEKRyc?hd=1
Click to expand...

Looks the same as my old 1998 Fairline 40 until it was opened up and thrashed. Has the boat been doing low speeds for a while and/or just run at tickover.

When I bought the F40, it was showing signs of glazed bores and sooted up turbos - too much time spent at low revs on the River Severn. Never did sort it out but lived with it, as at least the exhausts exited underwater.
 
The owner

Hi all mates, hi Adey,

I`m the lucky owner of this AZ 37.9, "Audaz", and I am happy to see my boat in this forum.

Some points of views and tecnical advices are always good to ear because I dont have to much knowledge about big motors like this - I`m a "retired sailor" used to MD2040, 2030 and others small motors.

I bought this boat at 2 years ago but I only put about 30 hours on him (including a Lisbon - Faro and reverse, 8 hours each).

I star reconditioning in 2011 but have no more time to do the best for the motors, especially about smoking starter.

Now, after a great trip from Faro to Lisbon (160 miles in less than 8 hours - 22 knots average) am gonna start to do some more works like:

Service motors - injectors, turbos, oils and filters and some little things like change all old manifolds (like volvopaul said).

Service general - New fly bridge wind stopper (larger than the original - more to the stern), new flybridge cushions (already donne), and a general polishment.

If anybody have any good idea or tecnhical advice, please, let me know. I appreciate a lot.

Best regards and good winds for all forum
João Santos (Audaz - Azimut 37-9 fly)

PS: Sorry for my bad english
 
I Paul,

Can you explain me or send me a pic of the "manifold heater" (the one that may not be working as fuse blow).

I gonna start servicing motor next week - injectors and turbos - but i d´like to say my mechanic to see other things to reduce the smoke emissions.

Do you think the "Smoke Limiter: 862266" can be a problem and if yes, can it be serviced?

best regards
João Santos (Audaz - Azimut 37-9 fly)
 
Follow the air pipe from the turbo outlet and the first thing you come to is the charge cooler bypass valve. On top of the valve is a square block with thick red and black wires attached to it. This is the manifold heater - the outlet of which comes up and over into the inlet manifold.

The fuse is not here - its located in the electrics box on the front left of the engine, where the harness connects. The fuse is actually inside this box, and you need to remove the cover to get to it. It's a small ceramic fuse as the fuse controls the heater solenoid - its usually in a black plastic in line fuse holder, so you may need to dig about a bit in there to find it.

As for the smoke limiter - VP? I've never touched mine so I'm not sure if you can do anything with it.
 
rosssavage said:
Follow the air pipe from the turbo outlet and the first thing you come to is the charge cooler bypass valve. On top of the valve is a square block with thick red and black wires attached to it. This is the manifold heater - the outlet of which comes up and over into the inlet manifold.

The fuse is not here - its located in the electrics box on the front left of the engine, where the harness connects. The fuse is actually inside this box, and you need to remove the cover to get to it. It's a small ceramic fuse as the fuse controls the heater solenoid - its usually in a black plastic in line fuse holder, so you may need to dig about a bit in there to find it.

As for the smoke limiter - VP? I've never touched mine so I'm not sure if you can do anything with it.
Click to expand...

The fuse for the manifold heater is under the steel plate above the manifold heater coil, there is a thin metal plate held on with 3 of the four long vertical bolt that hold the heater housing together. It's a strip fuse that bridges the feed supply from the solenoid to the coil stud.

The fuse in the black relay box left front side of engine is the stop solenoid fuse, also if your engine is the laterone there is a 50 second timer relay for the heater, if yours is the early one the heater is operated by the ignition key. There are start and stop relays in the black box too.
 
Over the years the bypass valve will gunge up if the turbo is leaking oil, this results in the inlet air being pushed down the bypass pipe and not via the intercooler, hence high air inlet temp which will result in poor performance.

You can test the manifold heater from cold start by starting the engine, placing your hand on the bypass pipe, it will get hot after about 30 seconds.
 
Hi Paul,

can you tell me if the "manifold riser" you talk here is the Volvo Penta "Exhaust hose", part number 1140669, euros 161,45?

please let me know

best regards
Joao Santos



volvopaul said:
Smoke amount looks about right for old 61a when cold starting, the manifold heater may not be working as fuse blows quite easy and relay fails quite often.

I see manifold riser is a bit home made, though
Pols like they have done it that way to minimise the uncooled area of pipe, not good when the inner sleeve rots away water will for sure run into the turbo for sure, also I don't like the stern gland feed pipe either, if it fall off water will run straight into the bilge.

What make and model of boat is it?
Click to expand...
 
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