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I am currently on the hunt for a 2006 ECU and will provide an update once I have one and add the NMEA 2000 engine data. This topic is covered on other forums and the actual connection is very...

Will a 60V-30 ECU work with the -70 or -71 harness? It seems the -30 ecu is a 2005 16/32 bit ECU. Are the running charecteristics of the full 32bit ECU better? Are the GEN2 (2007+) ECUs compatible?

Thanks for the confirmation. I will look for a 60V-50 or 51 ECU.

Thanks for the feedback. My replacement harness is part # 60V-82590-71-00. Is the 60V-50 the only option? Can a different ECU be re-programmed?

I have a 2004 250 HPDI (Z250TXRD, SN 60V X 1003563) that I would like to upgrade to have NMEA2000 connectivity for engine data. My current harness does not have the white plug. I already have an...

I feel like I can finally say that its fixed! I replaced the stator (CDI sent me a new one free) and have run the boat several times - with no issues. The motor runs perfect!

This motor hates me! Runs great when it wants too, but starts dropping ignition on multiple cylinders when it gets hot. Guess what, pulled the flywheel and found this:414123
The stator (a CDI unit...

Replaced the VST float (did not bend the tab), re-built the pulse pump, re-checked the small filter in the fuel return by the regulator (perfectly clean); put everything back together and started the...

Pulled the VST and pulse pump. The good: Pulse pump does not appear to leak, and the VST was perfectly clean inside. The bad - the float was partially filled with gas! Clearly, this motor hates...

After an extensive online search, I have identified 3 possible causes for over-fueling or over-oiling being reported. I see that a malfunction of the VST float/needle valve can cause excess fuel to...

Placing the O-ring in the freezer seems to help with the re-install. I also apply a bit of dialectic grease to the O-ring to keep it in place during assembly.

Gents, any suggestions? I feel like I have gone through almost every system in this motor, and there is something small that keeps it from working 100%. My local Merc dealer does not seem to be an...

The latest chapter:
Since my last post, the motor has been running great. The no start condition in my last post was caused by the injector harness not being plugged in all the way. Once I...

One step forward, two steps back.

I replaced both the engine block check valve and the check valve on the bottom of the VST. The check valve on the bottom of the VST was definitely not working as...

If I advance the throttle, the engine starts some times. It usually takes several tries and it does not want to idle. On the occasions when it does not start, it just keeps turning over with...

Leon, thanks for the feedback!
Yes, the fuel pressure measurements were taken as I was trying to troubleshoot the no-start. I am running around the lake with a full tool kit, fuel pressure gauge,...

Any updates? I seem to have similar problem.

I claimed victory too soon...The saga continues! Please help!

I spent a long day on the water on Sunday and for the most part the motor runs great! Starts quickly when cold, has excellent power...

I wanted to update this thread - better late than never :)

I ended up borrowing a known good ECU and that seemed to solve the problems. Since that ECU was a loaner, I ended up buying a Brucato...

Don, REC90 is what I use because it is what is typically sold on the water where I boat. While I am skeptical about 3 octane points having any negative effects on the performance of a properly...

Thanks for the suggestion Don. I will try running it on a portable tank. I may also siphon some of the fuel from the main tank into my truck and jerry cans and fill up with some fresh REC90. I...

I know that this is moving at a snails pace, but such is my life right now. 2 small kids keep me busy. I did however want to update this thread because I spent a little more time troubleshooting. ...

Fuel is a year old, all 75+ gallons of it :) However, it is REC90 with Stabil and Seafoam added. In my experience, while not ideal the fuel should still be good. I seems that bad fuel should cause...

Haughton, thanks for the suggestion. I plan to do just that.
This whole time I was under the impression that my problems were ignition related, so cleaning the injectors was on the back burner. ...

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