Honda 225 Surging at Mid rpm's

[bullwinkle2]

Re: Honda 225 Surging at Mid rpm's

Don't give up!!!

My 225 would run to 4500 and then fall to idle - and try to get back to 4500. I found my water separator to be rusted out - my bad. I replaced it with no improvement. I found that the separator fixture had rust on the surface that mates with the gasket on the new separator element. I replaced it. Still no improvement. I found air in the bulbs on the forward, starboard side of the motor - bubbles!!! I replaced the pickup in the tank - still bubbles. I replaced all hoses - still bubbles. I pulled a line from the tank to a primer bulb to a bucket of gas. I created a siphon and found no bubbles. Hmmmm. I then connected the same fixture to the outfeed of the water separator below deck. Bubbles!!!! 3/4 turn with a strap wrench and the bubbles stopped. I connected all hoses back to the motor. I open the VST valve and drained it out - yes, you might have to suck on it to get it going. Yes, your wife will not like your breath! Keep the VST open and keep pumping the bulb until you have NO BUBBLES!!!! Once done, close VST and run the boat hard. TADAAAA - it is fixed.

This is not a fix for clogged filters or bad pumps. But, it is the least expensive path to a fix.

Good luck and good fishing!!

 

[jamiebrandt]

Re: Honda 225 Surging at Mid rpm's

Hello All
I have 225 honda with same problem I just bypassed my fuel tank to see if that did anything and cleaned out the seperater and the fuel filter and no change
my question for anyone is
the fuel filter not the seperater with the float in it should the fuel canister be full up with fuel and stay that way??
I fill it up with the bulb till hard and then after idling it up a bit it runs down to about a 1/2" from bottom is that normal??
it never runs out but should it have air??
my next move is to check to see where the high presure filter is ????
help I need help

 

[hondon]

Re: Honda 225 Surging at Mid rpm's

Your high pressure filter is burried behind all that cowling and at the tail end of the vst . you will find that you need to remove the intake mani cover to access that filter so be prepared for that.Remove and install that cover slowly and incrementally as it is easily warped.

 

[v70cat]

Re: Honda 225 Surging at Mid rpm's

Your high pressure filter is burried behind all that cowling and at the tail end of the vst . you will find that you need to remove the intake mani cover to access that filter so be prepared for that.Remove and install that cover slowly and incrementally as it is easily warped.

Yes you need to change the filter and o-ring on the hard once every one to two years.

The engine runs great if you service it. The Honda 225 gives much more power than a Yamaha 225 AKA 208 and also gives better fuel economy. As someone else already pointed out the manual calls for 10W30 and also lists the maintenance items. What a clever idea reading the manual!

 

[Rdryden34]

Re: Honda 225 Surging at Mid rpm's

I have a bf225 '02. Very well maintained and never had any issues until this very same problem! I have had our local Honda mechanic change the low and high pressure pumps and the engine would run great for about 10 hours and then the problem is back - can't get over 3000 rpms. I personally changed all fuel lines except the one coming from the hp pump to the injector bar and sameproblem!? After reading this thread I will take back of the vst and try to clean up one more time? Maybe an o ring I hope but they are all brand new. Is is possible that the float in the bowl is stuck? That's pretty much what I am down to hoping at this point. The bulb won't stay hard even with a separate external tank? Any thoughts??

 

[dale1]

Re: Honda 225 Surging at Mid rpm's

thanks guys. i'm new to the 225 honda. ive got the same problems. what the heck is the VST? thanks. dale

 

[Rdryden34]

Re: Honda 225 Surging at Mid rpm's

Thought I'd let everyone know in case it helps you. My problem was an o ring at the high pressure fuel filter. Replaced and runs great! Wow!

 

[dale1]

Re: Honda 225 Surging at Mid rpm's

Thanks RD. Hey does anyone have information on the VST. Where is it located? Do I need to clean it, etc? thanks dale

 

[Rdryden34]

Re: Honda 225 Surging at Mid rpm's

Dale,
The VST is on the back of the engine at the bottom. You must remove the clam shells and the air intake manifold to get to it. It is the entire unit that is made up of the gas bowl with float and the high pressure fuel filter and the little black vacuum canister. Once removed it would be my advice to NOT try to remove the screen filter at the bottom of the hp pump but rather take the entire VST to a mechanic shop that has an unltrsonic cleaner and let it set in there for 45 mins. That screen can be removed but is a complete *****! This can be your problem but watch for that hp fuel filter o ring. The honda mech installed it incorrectly on mine and piched it giving it the same symptoms it had b4 replacing the hp pump. Good luck.