2006 SX230 high output MR-1s cranks but no start.

[straydog16]

Might be a long shot but maybe someone will have an idea before I drop it off to the marina this week. Yesterday I was pulling the kids on the tube and the port side engine went from 7k rims to 4 then shut down and couldn't get to fire back up. Limped back the dock on one engine. I checked all the obvious clean outs, clean cut off switch. After getting it loaded I did get it to start but wasn't sounding great. I figured it might be a fouled plug or 2.

Fast forward to today ( happy father's day!) Hooked up the YDS code reader I bought thanks to this group mainly to read the hours as this is new to me boat this year. Only code it read was a low oil pressure code. Which there was still oil on the stick, little confused. I switched out the plugs with brand new
CR9EB (not from amazon) still no change. Starts up runs for 5-10 seconds long enough to turn the water on then shuts off. Then tries might run a but only for a few seconds if it fires up. I did notice the IAC valve was getting hot to the touch after little research I swapped that out with the right engine. No changes, kinda of at a loss here. I did do all the test the YDS would allow coils, fuel pump, crossover injectors. Only thing left to swap over would be the ecm. The fuses are good, battery is charged and good, coils with sparkplugs and without plugs, even sprayed a little starting fluid didn't make a difference. Right engine runs fine. Sorry for the long post if you made it this far. Any help would be appreciated! Thanks gents happy late father's day!

 

[buckbuck]

Pull your lanyard switch all the way out and let it snap back in. Do that several times. That is the switch that will allow crank but no start. There are actually 2 contacts, one for each engine, on the switch.

 

[Joel.Conrad]

Might be a long shot but maybe someone will have an idea before I drop it off to the marina this week. Yesterday I was pulling the kids on the tube and the port side engine went from 7k rims to 4 then shut down and couldn't get to fire back up. Limped back the dock on one engine. I checked all the obvious clean outs, clean cut off switch. After getting it loaded I did get it to start but wasn't sounding great. I figured it might be a fouled plug or 2.

Fast forward to today ( happy father's day!) Hooked up the YDS code reader I bought thanks to this group mainly to read the hours as this is new to me boat this year. Only code it read was a low oil pressure code. Which there was still oil on the stick, little confused. I switched out the plugs with brand new
CR9EB (not from amazon) still no change. Starts up runs for 5-10 seconds long enough to turn the water on then shuts off. Then tries might run a but only for a few seconds if it fires up. I did notice the IAC valve was getting hot to the touch after little research I swapped that out with the right engine. No changes, kinda of at a loss here. I did do all the test the YDS would allow coils, fuel pump, crossover injectors. Only thing left to swap over would be the ecm. The fuses are good, battery is charged and good, coils with sparkplugs and without plugs, even sprayed a little starting fluid didn't make a difference. Right engine runs fine. Sorry for the long post if you made it this far. Any help would be appreciated! Thanks gents happy late father's day!

Did you get it figured out?

 

[Marcio Fazzio Martins]

Did you get it figured out?

Pull your lanyard switch all the way out and let it snap back in. Do that several times. That is the switch that will allow crank but no start. There are actually 2 contacts, one for each engine, on the switch.

Pull your lanyard switch all the way out and let it snap back in. Do that several times. That is the switch that will allow crank but no start. There are actually 2 contacts, one for each engine, on the switch.

I have the same issue on my 2004 AR230 with SRT1000 engine. For the first time in so many years I could not start the engines after a few months from the last use. My first conclusion was bad gas (old engines do not like ethanol !!!), since I thought that there were not much gas on the tank I filled it up with fresh gas (32 gallons), so I had about 18 gallons of 6 months old gas on the tank before. But it did not work. both engines still crank but wouldn't start. Checked the kill switch and connections seems OK, after moving it up and down with no results I manually connected the wires to bypass the switch and still no start.
Next, I checked if I got sparks on the spark plugs and yes I got spark on both engines.
Then, I spray starting fluid on each engine to see if at least I would get a improved sign of starting, but not at all.
next tried to listen to the fuel pump noise to see if they were working and it sounds like they are as I try to crank both engines. I hear the noise, but cannot precise if with the correct pressure.
I am trying to avoid emptying the 50 gallons and adding a little "new gas" to see if it would work, but it will be a hard thing to do.
I am thinking about disassembling the jets to see if the old gasoline+ethanol has clogged them.
If the gas has separated from the water, the pump may be sending too much water to the engines so it wouldn't start, but I guess the starting spray I tried would have at least made a different sound when attempting to start.

Now, both engines refusing to give any signs of starting would be a coincidence if both pumps failed.

If you have any tips, please let me know!