I have a TDI-150 VW/Mercruiser marine
engine aboard. It has run well apart from my recent problems with bad fuel (lots of water
in the fuel when I started it). I had a lot of issues that were solved
, but my big problem with the engine is the lack of support and lack of knowledge. While Mercury
is a big company, very few of their hundreds of service
points have any expertise at all with the engine and even fewer will actually work
on the engine.
The engine is a common diesel
(Jetta, Passat, etc.) while the 5-Cylinder TDI was never put into cars in the USA. There are lots of manuals
and lots of expertise in the car world. I ended up using a VW car shop in Newport
, RI this year since the only Mercruiser service
point who would work
on the engine wouldn't make house calls and their marina's depth
was too shallow for me to be towed in.
situation is absolutely ludicrous. I needed a new fuel injection pump
, and the official source was $5700 and several weeks wait; since the pump
is 100% identical to the car pump I opted to go for a $400 replacement from VW. Likewise the little electric fuel pump
that costs $70 in stores was being sold for $570 (same part number, except it is hidden by white paint
on the marine engine).
What is good is that the engine uses a Bosch ECU with only slightly modified EEPROM code. So for the price
of a cheap
CAN-BUS cable and some free software
you can examine all the data from the engine - something that can't be done on most other diesels. I used Ross-Tech software
and the engine code for the VW Marine engines is on their list of supported engines.
All in all the engine is rock-solid but keep in mind that car mechanics and car supply stores are going to be much better in terms of knowledge, availability and price