On Sat, 3 Jun 2017 09:41:35 -0700 (PDT), True North
wrote:

On Saturday, 3 June 2017 11:25:02 UTC-3, wrote:
On Sat, 3 Jun 2017 08:03:31 -0400, "Mr. Luddite"
wrote:



These guys are pretty good. As I previously posted, I visited them on
Thursday to see how things were going. When I mentioned the control
valve the tech acknowledged that it was the first thing he thought of
but they are obligated to follow the recommended "fix" procedures by
Nissan in order to be compensated for parts and labor by the
manufacturer for warranty repair. In order to replace the control valve
they have to get further authorization from Nissan. Makes sense but if
they were free to do what *they* think should be done I would have had
the car back on Wednesday. Now it will be sometime next week. Ok with
me. The loaner they gave me is nice and better equipped. Might even
see if I can strike a deal to keep it instead. :-)



I ran into a similar thing with Mercury on my old 60 EFI outboard.
Unfortunately they ended up selling me some parts I did not need in
the flow chart (thermostat, impeller etc) but I saved the original
ones and reused them on subsequent maintenance so I just ended up
eating some labor. In the end I had isolated the problem down to a few
things that they could not ignore and they finally admitted it was a
problem mating the Mercury "big foot" L/U cooling water to the Yamaha
licensed power head. They knew about it and thought they had the
problem fixed ... it wasn't. My local guy came up with the fix that
was adopted for all of them until subsequent new manufacture used a
different interface. Essentially the water tube broke loose at the top
and it was done by the dealer on the first 100 hour (in 2002). That
was the last time I ever took a motor to a dealer for routine service
although it was a pretty common problem on all of the "big foot" Mercs
that used Yamaha power heads around that time. The local guy had just
gone through this on a smaller motor but he still had to convince Merc
it affected the 40-60s. By then I had the folks in corporate involved
and I was beating them up pretty bad on the boat BBs. They gave him
free rein to fix the problem and when he was successful they wanted to
know what he did.
Bottom up, field engineering ;-)

Wow!
I had no problem with my 'Made in China' 2012 Mercury 60 BigFoot.

I am sure after 10 years, they shook out all of the bugs. Honestly,
that was the only real design defect I had in 3000 hours. Other than
that I just had one bad HP fuel pump and two bad IAC valves. The pump
caused the engine to start leaning out around 3000 RPM with low rail
pressure on the injector rail. The IAC valve keeps it from idling, it
is OK once the throttle opens a bit. On those motors, the throttle is
closed on idle and the air all comes from the IAC, controlled by the
computer. It is a $40 part that is real easy to change (one hose, one
connector and one screw, all out in the open).
That is what makes the "paca paca" sound when it is idling.
The HP pump is a little harder but not much. You need to open up the
vapor separator. You might be able to do it without removing the VST
but I just took it off (3 screws). Easy job in the driveway.