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Easyvictor.14
Joined: 22 Feb 2015 Posts: 124 City/Region: Dallas
State or Province: TX
C-Dory Year: 2008
C-Dory Model: 23 Venture
Vessel Name: Easy Victor
Photos: Easy Victor
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Posted: Wed Sep 19, 2018 4:53 pm Post subject: Need Help!! Never ending issue Suzuki DF150 |
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OK brats,I have A recurring problem with my Suzuki DF 150 fuel injected 4 stroke. 2008 model on a 23 Venture.
I’ve been in 3 shops a total of 5 times and spent over $2800 so far.
The engine will start just fine, and run for about five or 10 minutes at 3800 to 5500 RPM then it will start to stutter stumble down to about 3000 RPM and never go back.
This is what has been done: water separator replaced, fuel vents re-oriented, loop in fuel vent lines, injectors rebuilt, vapor separator tank cleaned twice and replaced once, new fuel pump $$$, and “vacuum leak” repaired (don’t know what was supposedly leaking) both tanks pulled, cleaned, tested. The engine had 85 hrs on it when I bought it 3 yrs ago from Wefings, Now has 235 hrs. Been a huge pain in my butt, I’ve even thought of selling, but I won’t do that to someone. HELLLLPPPP!!!
All but one shop are in other states, and local shop won’t honor any work, they just want to keep throwing parts at it with my credit card.
There was some water in fuel originally, came in thru tank vents facing forward. That problem is fixed. _________________ "New" 2008 23 Venture.
1992 Boston Whaler Montauk 17
1977 Sea Ray SRV 200 sold 2008
1981 T Craft 26 center console
1981 Silverton 34
1979 Chapparal 187
Many, many other small aluminum, wood and fiberglass toys!!! |
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BrentB
Joined: 15 Jul 2006 Posts: 4419 City/Region: Greenwood
State or Province: IN
Photos: BrentB
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Posted: Wed Sep 19, 2018 6:54 pm Post subject: |
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Any water and debris in filter. I use a Racor water and gas filter with clear bowl to check.
Have all fuel hoses been replaced esp the ones inside the rigging tube? Hose can look good on outside but the inner hose can fail
What is the fuel pressure on the injector rail?
Do you have the factory shop manual? Any codes using diagnostic software.?
Take it back to Marc at Wefings? _________________ Brent Barrett |
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Easyvictor.14
Joined: 22 Feb 2015 Posts: 124 City/Region: Dallas
State or Province: TX
C-Dory Year: 2008
C-Dory Model: 23 Venture
Vessel Name: Easy Victor
Photos: Easy Victor
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Posted: Wed Sep 19, 2018 9:42 pm Post subject: |
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Yes, every fuel hose and filter has also been replaced, and it does it when run from a portable tank, so it’s engine side. Don’t know rail pressure, I have to assume Suzuki dealers checked that!
The most maddening part is, it’s intermittent. Might start and run all day for several days, then start acting up. Sometimes it will clear after a shutdown for a few minutes, other times it won’t recover until it hits the shop. |
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Da Nag
Joined: 24 Oct 2003 Posts: 2818 City/Region: Port Angeles
State or Province: WA
C-Dory Year: 2008
C-Dory Model: 16 Angler
Vessel Name: Taco
Photos: <a>Da Boats</a>
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Posted: Wed Sep 19, 2018 10:18 pm Post subject: |
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Sounds like venting/fuel flow could be a potential culprit, but even though you've looked into that - have you tried running it on a portable tank just to make sure? _________________ Will, C-Brat Nerd |
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tsturm
Joined: 01 Nov 2003 Posts: 1134 City/Region: Soldotna
State or Province: AK
C-Dory Year: 2003
C-Dory Model: 25 Cruiser
Vessel Name: JMR TOO
Photos: JMR-TOO
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Posted: Wed Sep 19, 2018 11:20 pm Post subject: |
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Easyvictor.14 wrote: | Yes, every fuel hose and filter has also been replaced, and it does it when run from a portable tank, so it’s engine side. Don’t know rail pressure, I have to assume Suzuki dealers checked that!
The most maddening part is, it’s intermittent. Might start and run all day for several days, then start acting up. Sometimes it will clear after a shutdown for a few minutes, other times it won’t recover until it hits the shop. |
Is the White E.C.M. power wire HOOKED DIRECTLY TO THE + POST OF A BATTERY, not through a switch, combiner or relay etc.?? |
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MikeR
Joined: 21 Apr 2013 Posts: 474 City/Region: Mill Creek
State or Province: WA
C-Dory Year: 2016
C-Dory Model: 22 Cruiser
Photos: MikeR
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Posted: Thu Sep 20, 2018 12:50 am Post subject: |
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It sounds like something is tripping the over-rev caution system, which on the DF150 limits the throttle to 3000 rpm. Next time it happens, try to re-set it by reducing throttle all the way to idle for at least 1 second (I'd even go into neutral, just to be sure), then see if you can get above 3000 again. That's what the Suzuki manual says, and it's the exact same procedure as my Merc (which limits to 2500 rpm). The owners manuals provide virtually no information on what sensors play into this "feature", but in doing some research, it's more than just over-revs, at least on the Merc. It seems to be a combination of different sensors and from what I've gathered, protects the engine from some kind of perceived over-load condition and can happen at any RPMs above the protection limit (3000 in your case) not just RPMs above the max RPM rating. It could be a bad sensor...Mechanics may insist bad sensors will always throw a code, but I've heard from others who have replaced sensors like TPS or CPS which never threw codes, and their intermittent problems disappeared. Just a thought since it sounds like you've already checked all the fuel systems, and since it is so randomly intermittent.
-Mike _________________ 22' C-Dory Cruiser (2016)
16' C-Dory Angler (1989)
10' C-Dory Row Boat (1995) |
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Easyvictor.14
Joined: 22 Feb 2015 Posts: 124 City/Region: Dallas
State or Province: TX
C-Dory Year: 2008
C-Dory Model: 23 Venture
Vessel Name: Easy Victor
Photos: Easy Victor
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Posted: Thu Sep 20, 2018 10:07 am Post subject: |
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OK! I’ll check the dreaded “white wire”, thanks Dave.
Also, it’s not throwing any codes, but I’ll check into rev limiter and sensors.
All the shops have focused on fuel, but I’m leaning electrical also. |
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Wefings Dealer
Joined: 29 Nov 2005 Posts: 2086 City/Region: Panhandle
State or Province: FL
Photos: Cruise Ship #4
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Posted: Thu Sep 20, 2018 5:32 pm Post subject: |
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Change the spark plugs if you haven't already . Really ...........
They fail .
Marc _________________ Wefings Marine Website
Since 1909 |
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Easyvictor.14
Joined: 22 Feb 2015 Posts: 124 City/Region: Dallas
State or Province: TX
C-Dory Year: 2008
C-Dory Model: 23 Venture
Vessel Name: Easy Victor
Photos: Easy Victor
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Posted: Thu Sep 20, 2018 6:14 pm Post subject: |
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Changed plugs already also. I’ll be back at the boat Sunday and I’ll start checking these items. It’s just frustrating to have spent almost $3000 on “repairs” that didn’t fix anything. I can’t go back to the shops because they’re behind me on the Loop, and the boat is now back in Texas for the winter. |
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DavidM
Joined: 24 Dec 2017 Posts: 196 City/Region: Punta Gorda
State or Province: FL
C-Dory Year: 2006
C-Dory Model: 22 Cruiser
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Posted: Thu Sep 20, 2018 7:44 pm Post subject: |
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Are you sure that the fuel tank, the fuel pickup, the valve if it has one, any fuel filter and all of the plumbing to the carb or EFI is clean with no blockages.
Years ago I had a motorcycle that acted just like your engine. Turned out it was a blocked fuel pickup tube.
David |
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Easyvictor.14
Joined: 22 Feb 2015 Posts: 124 City/Region: Dallas
State or Province: TX
C-Dory Year: 2008
C-Dory Model: 23 Venture
Vessel Name: Easy Victor
Photos: Easy Victor
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Posted: Thu Sep 20, 2018 9:02 pm Post subject: |
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Yep. Ran it off a portable tank. Same results. |
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DrewbirdII
Joined: 29 Sep 2012 Posts: 53 City/Region: fanny bay
State or Province: BC
C-Dory Year: 1989
C-Dory Model: 22 Cruiser
Vessel Name: Drewbird II
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Posted: Thu Sep 20, 2018 10:06 pm Post subject: |
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Maybe a faulty 02 censor, or the tiny HP fuel filter in the fuel rail is partially plugged? Jim |
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BrentB
Joined: 15 Jul 2006 Posts: 4419 City/Region: Greenwood
State or Province: IN
Photos: BrentB
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Posted: Sat Sep 22, 2018 9:44 am Post subject: |
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Do you have the factory shop manual? Diagnostic software kit is available, too. |
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Pura Vida
Joined: 05 May 2020 Posts: 24 City/Region: St. Augustine
State or Province: FL
C-Dory Year: 2006
C-Dory Model: 25 Cruiser
Vessel Name: C-Pearl
Photos: C-Pearl
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Posted: Tue Jun 02, 2020 11:30 pm Post subject: DF150 |
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I just bought C-Pearl a 2006 25 Crusier with the same motor as yours. I am going to be servicing myself and came across this post. Just wondering if you ever solved the problems you were having and if so what was the cause.
Thanks! |
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ssobol
Joined: 27 Oct 2012 Posts: 3370 City/Region: SW Michigan
State or Province: MI
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: SoBELLE
Photos: SoBelle
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Posted: Wed Jun 03, 2020 11:39 am Post subject: |
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My Honda misbehaved due to a bad ECM. There was a service bulletin about it, but I had to point the dealer to it.
Might want to check the service bulletins for Suzuki. |
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