Hard to start

[lazergeek]

Perhaps the next time you’re going to leave it in a slip for an extended period after you’ve tied off at the slip use the wake mode and raise the idle to level three for about 15 seconds then back it down and shut it off. This will remove some of the water from the water lock and perhaps prevent happening what just happened.

Did you go out and run it after replacing the plugs to see if you got your RPMs back?

I have not yet read it going out again this evening so we'll check that then. We have this rental house for a week so I'm definitely going to the no wake to see if that helps too.

 

[lazergeek]

I have not yet read it going out again this evening so we'll check that then. We have this rental house for a week so I'm definitely going to the no wake to see if that helps too.

I didnt get a chance to take it out last night but I did run for 30 seconds on Wakeless #3 after changing the plugs. I had to run 2 hours home and back to rescue the cat from a malfunctioning automatic feeder. while the family fished from the dock again. Same issue this morning, Hard to start starboard engine. After it finally started it ran rough for about 30 seconds before running normally.

RPM's are still off but looking at it closer today so is the Port engines I assume its the 87 degreees and 68% humidity causing...

Forgot to run wakleess mode when stopping at the Reef and had the same issue after haning out for 3 hours.

In the past its just been me and my wife which is why I assume I have had no issues in the past, but this trip has 2 adult "kids" too so I assuming the extra weight on the back is not helping the issue.

 

[tdonoughue]

I rarely run in as cool as 87 degrees or so dry as 68% humidity. So I doubt that is it.

Throwing out some unlikely things: No hole in the fuel rail or line, right? Then I would suspect the fuel pump on that engine being weak. The 30 seconds weak before it perks up makes me think that fuel is draining back through the pump into the tank and it is taking a bit to get that fuel back up and to the injectors.

Have I heard of that before? No. But that is what the latest writeup is suggesting to me...

 

[lazergeek]

I rarely run in as cool as 87 degrees or so dry as 68% humidity. So I doubt that is it.

Throwing out some unlikely things: No hole in the fuel rail or line, right? Then I would suspect the fuel pump on that engine being weak. The 30 seconds weak before it perks up makes me think that fuel is draining back through the pump into the tank and it is taking a bit to get that fuel back up and to the injectors.

Have I heard of that before? No. But that is what the latest writeup is suggesting to me...

The heat and humidity was just for refrence on the slight loss of RPM's

Its not a fuel issue... Water box back pressure is a known issue on this thread for the Starboard engine. It started fine this morning with no issue, Fishing last night was rained out so the family was not jumping on and off the back of the boat.

 

[tdonoughue]

Simply have not seen the hard starting and back pressure so substantially and in an instance where there is no extra weight on the boat. I may have missed (several) reports, but the worst 'every time it is hard to start' ones I recall were all where people had surfing sacs and had sunk the back of the boat to make the wake. The theory goes that sinking the back that 6-12 inches produces sufficient backpressure to either fill the boxes more than normal and/or just creates enough additional pressure against the water to cause hard starting. Haven't recalled it where people were just jumping off the back of the boat, or where it went from 2 adults to 4--always seemed to be more substantial.

Have also seen it opined that it is vapor lock with the gas in the feed line vaporizing (and thus the advices frequently to run the blower when stopping and to let it run at idle prior to shutdown). But those are typically at higher temps as well. And more frequently after a short stop (picking up a swimmer or similar).

And the particular thing that I have not recalled in all of those reports is anyone reporting that once it started that they had rough running for 30 seconds.

Again, I may have missed something (I don't get to read every thread), but the above is why I am suggesting investigation into some alternate theories. I simply offer it for your consideration.

 

[FSH 210 Sport]

Simply have not seen the hard starting and back pressure so substantially and in an instance where there is no extra weight on the boat. I may have missed (several) reports, but the worst 'every time it is hard to start' ones I recall were all where people had surfing sacs and had sunk the back of the boat to make the wake. The theory goes that sinking the back that 6-12 inches produces sufficient backpressure to either fill the boxes more than normal and/or just creates enough additional pressure against the water to cause hard starting. Haven't recalled it where people were just jumping off the back of the boat, or where it went from 2 adults to 4--always seemed to be more substantial.

Have also seen it opined that it is vapor lock with the gas in the feed line vaporizing (and thus the advices frequently to run the blower when stopping and to let it run at idle prior to shutdown). But those are typically at higher temps as well. And more frequently after a short stop (picking up a swimmer or similar).

And the particular thing that I have not recalled in all of those reports is anyone reporting that once it started that they had rough running for 30 seconds.

Again, I may have missed something (I don't get to read every thread), but the above is why I am suggesting investigation into some alternate theories. I simply offer it for your consideration.

If you go back through this thread @MrBubbaGump chronicles his trials and tribulations with the hard to start issue, especially on the 210 FSH models. Yamaha corporate has acknowledged this issue with this model, and I’m not sure if there is a crossover to the 21’ bow riders with the TR-1 engines as those boats are the same except for a different liner and top cap.

This guy was having the same issue but didn’t close the loop

J

Thread 'TR-1 Starboard Engine Intermittent Starting Issue'

Feb 5, 2025

Hello! I have a 2023 AR220 Boat that I love; however, I have been experiencing starting issues with the Starboard Engine Only. After spending a day on a sandbar (4-5 hours), the starboard engine does crank but not start. I have to try at least 10 times after it fires up but after the 2nd try there is a lot of gasoline smell. This issue has become a headache because after spending a lot of time under the sun, everyone is so tired and just want to go back to the ramp and then the starboard engine does not cooperate Has anyone experienced the same issue? If so, have you found the cause and...

• Johanv09
• Replies: 8
• Forum: General Discussion

Member @anmut has also solved his hard starting issues by running the no wake at level 3 for 15 seconds at neutral then back to idle then off. That method also works for me but in a different scenario, I troll for hours fishing and I think the water locks get very full of water and that creates too much back pressure for an engine to start up easily, but doing the NWM for 15 seconds then off I don’t have a problem.