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larrymcauley
Joined: 22 Dec 2020 Posts: 7 City/Region: Larkspur
State or Province: CA
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Posted: Mon Mar 18, 2024 3:13 pm Post subject: VF90A 4 STROKE. |
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I bought a 1999 C-DORY 22 CRUISER. Came with 1 60hp Susuki . I replaced it last year with a brand new 90 hp Yamaha.
Went out on SF Bay a few times. Ran well. Still less than 10 Hrs on motor. Last time out was Dec 2023. In January I tried to start motor. It cranks and cranks, fires up and runs for a couple of seconds and then dies. Changed both fuel filters, checked fuel lines. getting gas. Removed injector rail, getting fuel there. New plugs. Put gas supply line directly into 5 gals. of new fuel. Cranks and runs smoothly for 10 secs and dies again. I have done this repeatedly, but still same result.
I watched a Youtube with an Australian guy who seemed to have similar problem. He replaced the IAC Valve and cured the problem.
The VF90A has a ISC VALVE.
This motor is still under warranty.
Any ideas? |
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Schuster
Joined: 25 Mar 2009 Posts: 121 City/Region: Port Orchard
State or Province: WA
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Sea Witch
Photos: Sea Witch
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Posted: Mon Mar 18, 2024 3:41 pm Post subject: |
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Sometimes it is cheaper to just take it to the shop and have them plug it in to identify the problem. Might have saved you buying new filters and plugs. I suspect it is some electronic sensor that is giving the motor signal to shut down. How long is the initial break in oil supposed to be run. I may be that you have to change the oil. Just throwing it out there as a possibility. Good luck. _________________ Dave
(Sea Witch)
25' Cruiser |
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colbysmith
Joined: 02 Oct 2011 Posts: 4558 City/Region: Madison
State or Province: WI
C-Dory Year: 2009
C-Dory Model: 25 Cruiser
Vessel Name: C-Traveler
Photos: C-Traveler and Midnight-Flyer
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Posted: Mon Mar 18, 2024 4:04 pm Post subject: |
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If it's under warranty, I wouldn't touch it. Take it back to the shop and let them fix it. |
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larrymcauley
Joined: 22 Dec 2020 Posts: 7 City/Region: Larkspur
State or Province: CA
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Posted: Mon Mar 18, 2024 6:16 pm Post subject: |
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Will check oil.
I was hoping it might be something simple I could fix myself and avoid having to haul the boat out and drive across the bridge which is a real pain. |
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thataway
Joined: 02 Nov 2003 Posts: 20818 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Mon Mar 18, 2024 10:27 pm Post subject: |
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In California you can only buy ethanol laced fuel. Although rare, it is possible that ethanol / water contamination is an issue. Agree take it to the dealer now--get it looked at.
Do you have a Racor Filter in the fuel line? If so, has it been replaced. Also there can be obstruction to fuel flow on the pickup--did you try to switch tanks.
Is the fuel bulb full when the engine does not run. _________________ Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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starcrafttom
Joined: 07 Nov 2003 Posts: 7883 City/Region: marysville
State or Province: WA
C-Dory Year: 1984
C-Dory Model: 27 Cruiser
Vessel Name: to be decided later
Photos: Susan E
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Posted: Tue Mar 19, 2024 11:24 pm Post subject: |
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Is it peeing water? you did not say and that could be the cause. not sure if yamaha has self shut down or not. sounds like its starving for gas other wise. if its getting air in the lines around the bulbs that could cause it to quit. _________________ Thomas J Elliott
http://tomsfishinggear.blogspot.com/ |
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