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Thanks everyone for the recommendations. I was able to get this figured out with the dealer.

Got my serial number today. 3b173501. I use vessel view mobile for gauges.

Do you have a part number for the harness that is needed? For this control box and engine.

I’m assuming I will also...

Thank you. This was helpful. It will be rigged at a certified Mercury dealer.

New engine being delivered so no serial number yet.

2023 Mercury 250 4 stroke with DTS

My current engine is a 2006 225 Optimax with mechanical controls. I tried searching but was unable to...

Very much appreciated. I have learned so much from this site.

2006 225xl Mercury Optimax
serial #1B288356
Merc remote monitor gauges that show up on phone.

Now that my VST issue is resolved, I’m having an air injector fault again.

Here is a little...

Got the gaskets and seals in for the Vst internals. Replaced them and the motor started right up. I think it was the sleeve on top of the high pressure fuel pump that was leaking and preventing it...

Thanks Don. I will make sure to check that as well.

I ordered new seals and sleeves for both the high and low psi pumps. There was some wear on the pump o rings and the sleeve on top the high psi pump. I’ll provide an update once they are delivered...

I have spark at all plugs. I tested air pressure and it was at 60psi. I tested fuel pressure and it went to around 20 psi with the key turned on and to about 60psi when cranking it. I did have some...

I picked up a spark tester and borrowed a fuel pressure tester from auto parts store. I’ll test it after work. What pressures should I be expecting while cranking? I looked in the forum, but could...

Thanks Joe. I’ll get a spark tester and see if I can borrow a fuel pressure tester. Kill switch is in place.

Would an air pressure gauge used for tires be close enough to test the fuel rail pressure while cranking the engine? It was tested when the injectors were cleaned and was good.

is there an easy...

2006 225xl Mercury Optimax
serial #1B288356
Merc remote monitor gauges that show up on phone.

Great forum. I have learned so much about these engines.

Here is my issue:

All fuel lines...

Thanks again for the replies. I haven’t been able to fish the last few weeks. Last trip out there we did fairly well. Caught a few decent bass in some canals off the Copasaw. I did see a small shark...

Guess I know where I’m going fishing Saturday. Bay Wallace here I come. Lol.

Fished yesterday in bayou copasaw area. Caught a good number of really small bass and a handful of keepers. Just fished random canals off of copasaw.

Thanks for the replies

Thanks for the replies. Fished yesterday but was only able to find a few small bass. Water around Mandalay NWR looked dead. It had that black color with no movement. Fished 70 mile canal and water...

Thanks for the replies. Fished yesterday but was only able to find a few small bass. Water around Mandalay NWR looked dead. It had that black color with no movement. Fished 70 mile canal and water...

Thanks for the responses. Is Bay Wallace a running joke on here because I’ve seen this suggestion pretty often on here with smiley face emoji’s? Lol

I’m starting to fish and learn the Bayou Black area, but have not had much success with bass. Any help or suggestions would be appreciated. I’ve read the past few years of info on this forum and know...

Thanks for the reply. It helped me figure out what I need.

Looking for help on the model number of the FNR controls I would need for my 2006 Mercury 225xl optimax. The boat is being refurbished and I don’t have access right now and want to order some new...