BLACK JACK is back....in the water

DOUGNASH · Post by **DOUGNASH** » Tue Jul 06, 2010 6:02 pm

can you tell I took the plastic film off the lense on my phone

ha ha ha

DOUGNASH · Post by **DOUGNASH** » Tue Jul 06, 2010 8:02 pm

Check the emergency shut down doors and make sure they are fully open.[/quote]

and where might the emergency shut down doors be???

DOUGNASH · Post by **DOUGNASH** » Wed Jul 07, 2010 6:53 am

RWS wrote:too much fuel or not enough air.

Do you have pyrometers and boost guages?

We're heading out for fireworks on the harbor now...

RWS

This is what I have noticed so far...

When I throttle up quickly onto plane, the dark smoke comes out almost like it's an open window on a house on fire

, back down on throttle, smoke stops.

The boost gauge is basically at zero.

It is working harder to keep up with the other motor, the throttle control is about 1/2" more forward on that motor compared to other.

I am going to take the cover off the intercooler to see what is going on inside.

I will keep you posted.

Thanks for ur help

RWS · Post by **RWS** » Wed Jul 07, 2010 8:18 am

I have been a member of the forum boatdiesel.com for several years now.

the $25 annual fee is well worth it.

Post your problem over there and you will get a tremendous amount of valuable advixce that could help you save time and $ and zero in on the problem quickly.

RWS

Jerry · Post by **Jerry** » Thu Jul 08, 2010 9:10 am

DOUGNASH wrote:Check the emergency shut down doors and make sure they are fully open.

and where might the emergency shut down doors be???[/quote]

Hopefully this works.
If you look at the cable with the red end, it is connected to a door that is in series with the blower and the air box.
On my bridge, I have what looks like two choke cables each with a t handle on it. If you were to pull one, it closes the air door to shut down the engines in case of a run a way.
I don't believe I have ever seen a boat with 671TI'S that did not have them. They are a must have with any 2 stroke diesel.

Jerry · Post by **Jerry** » Thu Jul 08, 2010 9:13 am

Also, The black smoke could just be from the boat being over propped. What is your no load and under load WOT?

DOUGNASH · Post by **DOUGNASH** » Fri Jul 09, 2010 7:38 am

Ok, so I think I found the problem, or one of them.

I took the top off the intercooler, look at all the junk on there...

DOUGNASH · Post by **DOUGNASH** » Fri Jul 09, 2010 7:40 am

I took the other intercooler cover off as well to see what that one looked like, totally clean and clear of junk.

Maybe I will get my BOOST back

RWS · Post by **RWS** » Fri Jul 09, 2010 7:45 am

shakedown cruise baby!

Keep making a list.

Mine was so extensive I put it on a spreadsheet and ranked the items in terms of importance.

It still exists!

Much smaller though.

RWS

DOUGNASH · Post by **DOUGNASH** » Fri Jul 09, 2010 7:45 am

Jerry wrote:Also, The black smoke could just be from the boat being over propped. What is your no load and under load WOT?

I have only brought them up to WOT under load very very briefly, that is when the port intercooler got clogged, and the smoke started billowing out. It all happened so fast, I didnt really pay attention to the tachs but I think it was around 2500 rpm's....

Jerry · Post by **Jerry** » Fri Jul 09, 2010 8:27 am

2500 WOT under load is right where you should be so you are not over propped.
Quite a bit of junk in there. I wonder how they missed that during the rebuild? Looks like you should take that off and have it tanked.
Cleaning that out should make a big difference on the running temp.

DOUGNASH · Post by **DOUGNASH** » Wed Jul 14, 2010 7:06 am

RWS wrote:shakedown cruise baby!

Keep making a list.

Mine was so extensive I put it on a spreadsheet and ranked the items in terms of importance.

It still exists!

Much smaller though.

RWS

I guess this should be on the top of the list

DOUGNASH · Post by **DOUGNASH** » Wed Jul 14, 2010 7:08 am

I think this gasket is leaking a little bit....

Jerry · Post by **Jerry** » Wed Jul 14, 2010 7:32 am

At least that is an easy fix. Do you have an outlet for the parts? I get all mine right from J&T. They are very helpful and have had everything I have needed in stock so far.