f225 yamaha stalls on acceleration

suddendebt · #1 November 9th, 2008, 12:17 AM

I have an 05 yamaha 225 fourstroke.
It ran perfect till it sat a few months. Took it out and wouldn't get over 2500 rpm. then as it sat a few minutes it rose a few. after starting it and stopping it over a coupe hours, it finally took off. I figured bad gas and injector cleaner fixed it. Recurred last weekend. never really got better. Took out all old gas and knocked out the antisiphon valve on the tank to ensure no restrictions. Idles and starts great. In neutral it revs as high as I want flawlessly. Any comments???

JUSTINTIME · #2 November 9th, 2008, 03:44 AM

any motor will rev fine in neutral

suddendebt · #3 November 9th, 2008, 07:57 PM

Really???
I suppose I was just trying to give as much info as possible to avoid having people who were concerned with a valuable suggestion from having to ask if it runs like junk all the time.

cousinabe · #4 November 9th, 2008, 10:35 PM

I am assuming you have the 2005 F225TURD model...

you may want to check the VST filter... item#18. This is a high pressure pump filter.
you may also want to poke around the other fuel/injection pump diagrams to gain some knowledge.

http://www.boats.net/parts/search/Ya...201/parts.html

sdsaw · #5 November 9th, 2008, 10:52 PM

I don't know if this will help you, but I was following a thread from another board about a Honda 130 EFI with similar symptoms and this is a what was causing his problem

"I mentioned the missing Honda outboard and described the symptoms and he goes, "I know exactly what it is". He came over the next day and pulled out this little solenoid switch that controls air flow while the motor is at idle. The thing has a little screen in it and it was all clogged up. Cleaned it up, put it back on, and she is good to go - running perfectly! She hasn't stalled once since."

I'm sorry, I don't know exactly what the part is called but I'm pretty sure that your Yamaha has one also.

...Or, dirty injectors?

Hope you get it fixed, Scott

JUSTINTIME · #6 November 10th, 2008, 02:39 PM

it could be the electrical fuel pump
plug it into yds

suddendebt · #7 November 10th, 2008, 09:04 PM

You guys are awesome. Thanks Cousinabe for the link to the diagrams. Wow A picture is worth everything. Wife wouldn't wait any longer so I dropped it off for the pro's to work on. I'll get back when I know what it was. THanks again guys.

suddendebt · #8 November 18th, 2008, 10:26 PM

Dealer says it's just dirty screens on the fuel filters. Pumped some cleaner in and set 2 hours then BAM. Good as new.

sdsaw · #9 November 19th, 2008, 12:55 AM

Wow, that was easy!
Which filter screens were dirty?
Couldn't have been the in-line, see-through fuel filters. I would think that those would just be replaced.
VST filter screen?

Thanks

JUSTINTIME · #10 November 19th, 2008, 01:51 PM

well what you cleaned went to the injector screens
keep running the cleaner all the time

suddendebt · #11 November 19th, 2008, 06:55 PM

Gunk was supposed to be from water and cheapo gas. Will be putting a 10 micron filter/separator in to get out more junk.