2003 Yamaha Waverunner FX 140 error code - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
Go Back   PWC Forum: The best hang-out for Personal WaterCraft enthusiasts > PWC Jetski Specific Forums > Yamaha Jetski

» Sponsors

LinkBack Thread Tools Display Modes
Old 06-21-2012, 09:12 PM   #1 (permalink)
Junior Member
Join Date: Jun 2012
Posts: 1
Default 2003 Yamaha Waverunner FX 140 error code

Im trying to fix my friends Yamaha Waverunner FX 140. It will start and runs fine, however after a few minutes the check engine sensor goes off. When I held the two buttons down I came up with error code 63. From what I read on other forums this means "Air intake system malfunction". While we were looking at the engine we saw a lot of standing oil in the top of the motor near the air filter and the what we believe to be the carburetor. We were wondering if the oil could have shorted out a sensor. If anybody else has has similar problems please help.
thomas112 is offline   Reply With Quote
Sponsored Links
Old 06-21-2012, 09:39 PM   #2 (permalink)
Senior Member
Ernest T's Avatar
Join Date: Aug 2009
Location: Woods on the left past Mayberry
Posts: 3,033

It sounds like the engine is way overfilled with oil. Oil has backed up into the air box through the oil separator breather hose which is right under the fuel rail. If there is any oil on the air filter it will make it very hard for the engine to breath, and give you that code. This is a fuel injected 4 stroke ski..............there is no carburetor.

On this ski you can only get an accurate oil level reading when the engine is HOT. Never check the oil level with the engine cold, or it will read way low, and you end up overfilling it. You have to run the ski on a hose for at least 15 minutes to get close to an accurate oil level reading. You need to remove oil until it reads at the 1/2 way point between the marks on the stick when the engine is HOT...........right after you have run it.

If the air filter has any oil on it it will need to be replaced. Spark plugs will typically also need to be replaced, since the excess oil fouls them very easily.

Get the oil level right, new air filter if necessary, and new spark plugs, and this should fix the problem.
2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100
Ernest T is offline   Reply With Quote
Sponsored Links

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 07:25 PM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.0