Yamaha Ar 230 HO Problem with one engine

[LukaszZelias]

Hello

I am from Poland and I am the first owner of a yamaha ar230 boat.
I found this forum because I have a problem with one engine
I released the boat last weekend and found that I had a problem with the battery. I started the boat with a second battery, both engines were working. after a few seconds one engine reached high speed and went out.
I checked:

Spark plugs, I moved to a second engine, which is equipped with it

coils, I switched to a second engine that is coming and it's okay

the fuel pump creates pressure (after removing the hose that goes to the engine, it spurts fuel)

I switched computers, switched to a second engine that works and is fine

pulling (leash) I connected the cables, bypassing the button

fuses are good

I use a translator, so sorry for the mistakes
Please help

 

[Julian]

after a few seconds one engine reached high speed and went out.

Can you describe how the 2nd engine dies in a little more detail? The translation makes it sound like the engine increases in RPM and then dies.....but I'm not sure that is correct.

You seem to have done some very good trouble shooting already. You do not mention checking the clean out hatch switches on the stern of the boat.

 

[Babin Farms]

Welcome to the group!

Clean out switches would be my guess right now if everything works when swapped on the second engine.

 

[LukaszZelias]

Can you describe how the 2nd engine dies in a little more detail? The translation makes it sound like the engine increases in RPM and then dies.....but I'm not sure that is correct.

You seem to have done some very good trouble shooting already. You do not mention checking the clean out hatch switches on the stern of the boat.

it was exactly like that, two engines were running, after 10 seconds of running one engine got high speed and went out.
I will add that I checked the spark on spark plugs and it does not appear on this engine

 

[Julian]

Need one of the super knowledgeable engine guys to weigh in here, but my thought was if the timing chain broke?

 

[LukaszZelias]

Need one of the super knowledgeable engine guys to weigh in here, but my thought was if the timing chain broke?

timing chain is ok we dismantled it. the marks are in a good position and the wedge is vertical
the pump gives pressure, however, the spark plugs have no spark and are dry

 

[Scottintexas]

We need @swatski

 

[LukaszZelias]

the coils run on a good engine

 

[dgfreeze]

Did you run a compression check? The increase in RPM is strange... sometimes as an engine runs lean, there will be an increase in RPM, so maybe try to get a good idea what the actual fuel pressure is. I'd have to check for these engines, but if they're similar to the automotive industry, it should have 40PSI. You could also check the fuel pressure on the good engine, and use that reading as a baseline for what to expect from the bad engine.

 

[LukaszZelias]

Did you run a compression check? The increase in RPM is strange... sometimes as an engine runs lean, there will be an increase in RPM, so maybe try to get a good idea what the actual fuel pressure is. I'd have to check for these engines, but if they're similar to the automotive industry, it should have 40PSI. You could also check the fuel pressure on the good engine, and use that reading as a baseline for what to expect from the bad engine.

I didn't check the compression ,I'll do it

 

[WREKS]

YDS would be helpful. What is your general location? Switching fuel pumps? Try swapping Intake 2 sensor part 9. I do not know what it does or if it can be tested.

 

[LukaszZelias]

YDS would be helpful. What is your general location? Switching fuel pumps? Try swapping Intake 2 sensor part 9. I do not know what it does or if it can be tested.

ordered yds I have to wait 2 weeks I am from Poland, I did not change the pumps, I managed to call the engine and I saw that the fuel spurts

 

[WREKS]

Please update your general location and keep reporting back.

 

[LukaszZelias]

I turned the engine on, cleaned the collectors, put it back together. the engine starts but goes into high speed on a neutral, do you have any ideas

 

[Beachbummer]

throttle plates closed? It should not be able to spin at high RPM without air. If so, Air is leaking past the throttle body for it to be able go reach high RPM. other air entry points into the air circuit?

 

[Looper7]

Is it still stalling after the rpms go up? If so that sound like it could be leaning out