I've never messed with honda EFI but I know for most basic auto manufacturer EFIs that the coolant temp sensor directly affects the idle air control valve so maybe it's the engine dropping down in temp dramatically thats causing the temp sensor to tell the ecm it needs a rush of more fuel and may be the reason it stalls out. Possibly find the resistance of the ECT when up to temp and just not run the ECT for a test in the water with a set resistance.

There is an idle adjustment. If you take the plastic cover off the right side of the throttle body where the cable goes in, there is an idle set screw just like the older carbureted Honda’s. There’s a lock nut on the idle set screw and you use a small Allen to adjust it. I turned mine up a little and I’m curious if it’ll help idle underwater

Good to know. Thanks mud puppy. Make these companies step up their game and make products that actually do something.

Good video sir

Just need to wait for the next gen 2 cyl machines ;)

Just idle it up on the throttle cable a little bit

Wassup mud puppy big fan

Maybe the cylinder shrinks and the piston is too hot and big. If you easy into water the piston cools also and has room to move.

what rims are on the 300

all my buddies and I got copper 90 and all got 02 deletes from Ashton and it does help out a lot. all of our bikes will idle now

Ever try snorkeling the exhaust? Isn’t the psi from the water pushing against the exhaust messing with the back pressure? Just a thought

I think it’s bc there is to much back pressure in the stock exhaust so when you take it deep, it causes more pressure. I’ve heard people fixing this issue by pulling out the clean out plug in the exhaust. I’m gonna try it

Had an issue with my 2020 had it rebuilt and now I don’t have the problem I used to when it would touch water and die did fine on the ride I took it when I got it back only died once

I have a 1998 Honda 300 fourtrax 4x4. Would I be able to mount a 2” bracket lift and still use some 420 shocks?

I need help I was mudding water knee high I got stuck then my 2022 Honda foreman 520 turned off. There was no water in oil no water in gas tank no major water in air filter. Spark plug is good what can it be

Would a weak fuel pump cause under water idling issues?

Could you get a fuel controller with fuel maps for mixtures that would help it idle under water?

Wut is the biggest Aztex I can fit on a strat axle Forman 520 I have a 2 inch lift and a chip but I drive in thick clay mud I don’t know wut size I need

When did fourwheelers change to the point that you can’t just screw in a screw on the carb

how do you like the motohavoks?

🤘

What if the whole problem is simply a back pressure issue? Vs a sensor problem??? How do you change the exhaust so less water pressure is going against the exhaust... smaller pipes allow some kawasaki engines to run under water and duals kill it. Just my 2 cents. Great video.

I want this bike if you ever sell it!!!!

O2 Sensors are only resistors ,, all that is done is they matched up the plug soldiered in the correct tolerance resisters melted plastic over it all and called it a o2 delete

what i do is i turn the throttle cable tension up and that turns it up

Why don’t you like stall kits for Honda’s???

I have a 98 foreman and it has no problem underwater so idk if it cuz it’s an older bike or what

Why dont you just turn up the idle on the cable line on the bar?

You got some motohavoks Thoes are nice

Where is the talon

Would it work to turn the idle up

Aye mud puppy there is a idle screw on your handle bars

We solved ( kinda ) this issue lol check out our brand new build spoiler alert we run air and exhaust snorkels but we go deep and we are on tracks so we can’t float

Did you ever sell the can-am ?

That’s y I hate electronics y can’t it just have a carb on it just turn the idle up with a screw driver and ur set 😂

Just idle it up at the throttle the snallest bit thats what helped mine

So is it me or did you just prove that O2 deletes are shit and we're back to square one on idling underwater?

6 let’s gooooooo

Why not just buy a boat?😊