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Okay - Here's the deal.
2004 Four Stroke 90HP - 2004 Lowe Boat, internal fuel tank.
December 2009 - rough idle. Dropped carbs cleaned Hi & Lo Speed jets. Drained Fuel Tank Completely, inspected fuel tank for any deposits - it was crystal clean.
Installed an inline 10 micron Yamaha fuel filter (spin on type). Boat ran fine for 5 months.
Last week boat starts missing at low speed and high speed can only get 4,500 RPM. At idle (rough) I remove spark plug wires, motor kills for #1, #2, #4. No change whatsoever on #3. I pulled spark plug and it was wet, swapped it with #1 and the plug is good. I checked and I'm getting fire on #3 so the carb must be clogged again.
I'm filling up with NON ETHANOL gas!
I removed fuel filters on the motor and poured them out in a white bucket. No signs of grit, water, grime or trash.
How am I clogging my carbs???
The F90 fuel filter consists of a cup with a strainer basket on the inside. On later models they are using a paper medium filter. I would like to swap my strainer basket with a Yamaha 68V-24563-00 filter for more filtration. Can I do this????
THANKS!!!!!!!!!
2004 Four Stroke 90HP - 2004 Lowe Boat, internal fuel tank.
December 2009 - rough idle. Dropped carbs cleaned Hi & Lo Speed jets. Drained Fuel Tank Completely, inspected fuel tank for any deposits - it was crystal clean.
Installed an inline 10 micron Yamaha fuel filter (spin on type). Boat ran fine for 5 months.
Last week boat starts missing at low speed and high speed can only get 4,500 RPM. At idle (rough) I remove spark plug wires, motor kills for #1, #2, #4. No change whatsoever on #3. I pulled spark plug and it was wet, swapped it with #1 and the plug is good. I checked and I'm getting fire on #3 so the carb must be clogged again.
I'm filling up with NON ETHANOL gas!
I removed fuel filters on the motor and poured them out in a white bucket. No signs of grit, water, grime or trash.
How am I clogging my carbs???
The F90 fuel filter consists of a cup with a strainer basket on the inside. On later models they are using a paper medium filter. I would like to swap my strainer basket with a Yamaha 68V-24563-00 filter for more filtration. Can I do this????
THANKS!!!!!!!!!
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