My 2005 Yamaha FX HO Waverunner runs smoothly, but will only go 38 to 40 mph. The RPM Limiter is off, intake is clear, oil level is good and air cleaner is ok. Should I replace the spark plugs?

Question 1

0helpful

1answer

It Runs but has very little power,quits often,if you give it to much throttle it bogs down

Robert, First try new plugs, check fuel filter, sounds like it could be carburetor/injector issue, dirt,plugged jet, etc. Remove and clean/rebuild carb./injector.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
XLT1200 Bogs down
Thread 2004 FX HO ECU Problem
Waverunner Loses Power and Wont go Above 35 mph Solution
https://answers.yahoo.com/question/index?qid=20080525091900AATkgJh

May 23, 2016 • Yamaha 2004 WaveRunner Superjet Base

0helpful

1answer

Starts and runs and RPMs are good but it won't go above 5 MPH. Checked intake and I have the rooster tail of water but no speed

you may have to check the pump unit for obstruction
the impellers are known to wear from abrasion from sand in the water and not operate efficiently.

May 29, 2015 • Yamaha 2011 WaveRunner FX Cruiser SHO

0helpful

1answer

2004 waverunner fx cruiser, ran great last time out. Now hard to start and wont run on high speed. Nothing over 6 mph.

How old is the fuel? Ethanol causes major problems if left too long. You may need to empty the fuel and clean out the fuel system. Try changing the fuel filter and adding some seafoam to the fuel and running seafoam thru the fuel system. Hopoe this helps.

Mar 15, 2014 • Covercraft UltraTech Custom PWC Jet Ski...

0helpful

1answer

Waverunner is abnormally slow accelerating initially, but will finally get up to normal speed

Pull your air filter out and also replace plugs. Overtime the filter will become saturated with oil and believe it or not the plugs can cause about a 10 mph drop if there going bad. But make sure your pump and impeller are not damaged also

Sep 18, 2013 • Yamaha 2004 WaveRunner FX Cruiser

0helpful

1answer

Hi, my waverunner rpm took time between 5000 to

what is the answer to this question?

Jul 31, 2013 • Yamaha 2011 WaveRunner FX Cruiser SHO

0helpful

1answer

Warning and oil lights come on at 6000rpm

check wire connections are clean and check the oil sencer !

Jul 05, 2012 • Yamaha Boating

0helpful

1answer

Yamaha waverunner won't idle and losing power

L stands for limp mode
it is a mode that the ECM selects to prevent serious damage to the engine ( from you lack of oil )
have the fault codes read then reset with the scan tool

Mar 31, 2017 • Water Sport

0answers

HOW TO RESET SAFE OPERATION MODE-2005 YAMAHA VX1100 SPORT

Be the first to answer Nov 23, 2017 • Computers & Internet

0helpful

1answer

2004 fx CRUISER ho WAVERUNNER DOESNT WANT TO IDLE OR RUN AT TOP S

did you mean 900 cause 9000 is overrived and the engine may be blown

Jul 08, 2010 • Boating

1helpful

2answers

YAMAHA FX 1100 HO 2006 ROUGH IDLE WAVERUNNER

I have a Yamaha fx 1100 that starts real slowly the battery is fully charged but the bike sounds like its not got alot of power going to the starter can anyone help solve this also battery terminals are clean and not corroded

Jul 28, 2009 • Yamaha 12V Air Pump

Question 2

Anonymous

Expert 207 Answers
Posted on Jul 08, 2009

Anonymous

Expert

Joined: Jun 22, 2009

Answers

207

Questions

0

Helped

119769

Points

418

Yes yes yes the new yamahas foul plugs like crazy i dont know if it is a valve defect or what but you will be changing them every year one trick i have been doing to my coustmers watercraft and has been working well insead of ngk cr9eb plugs use a cr8eb it is a hotter plug there for it will burn better and no it will not hurt your ski trust me i have over 15 yrs ex and 6 in r&d research and design

Anonymous Mar 13, 2013

Is this plug CR8EB for the 160 hp engine?

×

Related Topics:

Trustworthy Expert Solutions

My 2005 Yamaha FX HO Waverunner runs smoothly, but will only go 38 to 40 mph. The RPM Limiter is off, intake is clear, oil level is good and air cleaner is ok. Should I replace the spark plugs?

1 Answer

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

It Runs but has very little power,quits often,if you give it to much throttle it bogs down

Starts and runs and RPMs are good but it won't go above 5 MPH. Checked intake and I have the rooster tail of water but no speed

2004 waverunner fx cruiser, ran great last time out. Now hard to start and wont run on high speed. Nothing over 6 mph.

Waverunner is abnormally slow accelerating initially, but will finally get up to normal speed

Hi, my waverunner rpm took time between 5000 to

Warning and oil lights come on at 6000rpm

Yamaha waverunner won't idle and losing power

HOW TO RESET SAFE OPERATION MODE-2005 YAMAHA VX1100 SPORT

2004 fx CRUISER ho WAVERUNNER DOESNT WANT TO IDLE OR RUN AT TOP S

YAMAHA FX 1100 HO 2006 ROUGH IDLE WAVERUNNER

Not finding what you are looking for?

12V Air Pump

It Runs but has very little power,quits often,if you give it to much throttle it bogs down

Ask a Question

Top Yamaha Water Sport Experts

Bob G

ADMIN Eric

johnny bonacci

Are you a Yamaha Water Sport Expert? Answer questions, earn points and help others

Manuals & User Guides

Related Topics:

Trustworthy Expert Solutions

My 2005 Yamaha FX HO Waverunner runs smoothly, but will only go 38 to 40 mph. The RPM Limiter is off, intake is clear, oil level is good and air cleaner is ok. Should I replace the spark plugs?

1 Answer

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

It Runs but has very little power,quits often,if you give it to much throttle it bogs down

Starts and runs and RPMs are good but it won't go above 5 MPH. Checked intake and I have the rooster tail of water but no speed

2004 waverunner fx cruiser, ran great last time out. Now hard to start and wont run on high speed. Nothing over 6 mph.

Waverunner is abnormally slow accelerating initially, but will finally get up to normal speed

Hi, my waverunner rpm took time between 5000 to

Warning and oil lights come on at 6000rpm

Yamaha waverunner won't idle and losing power

HOW TO RESET SAFE OPERATION MODE-2005 YAMAHA VX1100 SPORT

2004 fx CRUISER ho WAVERUNNER DOESNT WANT TO IDLE OR RUN AT TOP S

YAMAHA FX 1100 HO 2006 ROUGH IDLE WAVERUNNER

Not finding what you are looking for?

12V Air Pump

It Runs but has very little power,quits often,if you give it to much throttle it bogs down

Related Topics

Ask a Question

Popular Questions

Waverunner bogs down on acceleration

I have a 2002 Yamaha FX140 Waverunner.Fuel problem or electronic?

2000 WAVERUNNER 1200 ENGINE REVS RPMS GO UP BUT IT WONT GO

No fuel to carbs waverunner yamaha XL760

Excessive smoke coming from waverunner exhaust

Top Yamaha Water Sport Experts

Bob G

ADMIN Eric

johnny bonacci

Are you a Yamaha Water Sport Expert? Answer questions, earn points and help others

Manuals & User Guides