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Thanks, I saw the play at the engine end of the cable. There is 1/4" of slop where the plastic shroud covers the metal tubing. So when the throttle is pushed as far as it can go, the linkages are...

No, there is no hotfoot on the boat.

had some beeping return. drained and replaced fuel filter - no water in it. Oil tank is full.

NOticed that the throttle cable has 1/4" of play at the engine where the threaded shaft enters the...

Wanted to close the loops for now.

Found a copy of the service manual on line, and followed the directions to test the TPS and adjust the linkages. Throttle linkages were not fully opening, but...

Thanks Savage. I had been told by several folks there is very limited ability to pull anything off this engine. Nice to know that it is possible. Just have to find someone competent, I guess.

Thanks - I don't believe there is any ability to read faults on this engine, being a 1999.

Motor is a 1999 Mercury EFI 225 on a 1990 Mako 230. SN for motor is 0T0 76137

Wondering if I can get an idea of where to start on this one. Launched last weekend and moved boat to the dock. ...

Thanks - glad it was simple - what is the function of that link? It connects to something below, but it was tough to see, and I've not found a diagram that shows the connection.

Yesterday I was out fishing when the motor (1999 225 EFI, SN: 0T0 76137) started to beep at me. Not the 4 beeps together, but randomly beeping single beeps. Did some searching and found that this...

Thanks, still mulling it over. Motor has 1300 hours on it, which makes me a bit leery.

Currently running a 1999 Merc EFI 225 on my 1990 Mako 230 cuddy cabin. S/N 0T0 76137. Found a 2010 Optimax 225 (don't have SN)which I'm contemplating purchasing and swapping over. Wondering how...

Sorry for confusion- I did not include the math - 19GPH At 25 is 1.3MPG, previously boat was closer to 1.7 MPG. Interesting about seeing fuel burn as linear compared to throttle position - I've...

Previously posted in this thread:

http://www.bbcboards.net/mercury-3-liter-3-liter-high-performance/615007-225-efi-troubleshooting-low-wot-difficult-accelleration.html

Motor is a 1999 Mercury...

Thank you for your help.

Happy 4th of July

Update - got the boat back from the boatyard - the VST filter and the filters for the injectors are replaced. Motor runs much better, though the fuel consumption seems high. I was running at 19 GPH...

Get well, and keep that hand clean!!! Best wishes.

I'm trying to locate a fuel pressure gauge, but mean while I changed the plugs, the old ones were the Champions, and the new ones are also. Several of the plugs were quite dirty, and looked like...

Preventative maintenance. It was 25 y/o and Mako foamed in the tanks. They tend to rot. I never had anything indicating it should be replaced, but after pulling it, there were two holes on the top...

Motor is a 1999 Mercury EFI 225 on a 1990 Mako 230. SN for motor is 0T0 76137

Symptoms
WOT only at 48-4900 RPM
Idles at 1200 out of gear, ~800 in gear
Chugs and bogs at RPM up to 2000...