How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask davesoutboard Your Own Question

davesoutboard
davesoutboard, Marine Mechanic
Category: Boat
Satisfied Customers: 1579
Experience:  marina owner for 20+years, certified Evinrude tech
14632772
Type Your Boat Question Here...
davesoutboard is online now
A new question is answered every 9 seconds

I have a 1996 200 hp johnson venom which was just completly

Resolved Question:

I have a 1996 200 hp johnson venom which was just completly rebuilt. It starts fine, runs find, but then we stop to fish and rest for about an hour, our problems start. The motor starts and with the prop not engaged we can rev the motor and it will run and stay running, but when we engage the prop the motor dies out. Sounds like it is flooded or something. After trying many times it will finally stay running and we can take off. It doesn't matter if we try to go slow or try to take off fast. It just keeps dying.
Submitted: 3 years ago.
Category: Boat
Expert:  davesoutboard replied 3 years ago.

davesoutboard :

You say you rechecked the carbs, what does that mean?

Customer:

the mech that rebuilt the motor checked all six carbs to make sure they were working correct

davesoutboard :

I would double check with him that he rebuilt them with new carb kits installed. I would then next time you run it and this happens have him with to check and see if it is firing on all six cylinders. You either have a carb plugged or you are not hitting on all six once it warms up. That engine I believe has the optic ignition system did he have the correct tool to check the timing?

davesoutboard :

I just double checked and it does not have the optic system so it is easy to set the timing

davesoutboard :

Also what did the complete rebuild include. Was the engine bored, sleeved or just honed?

Customer:

Hard to get him with me to the lake it's about 1.5 hours from his shop and then we run the boat for a little then set for an hour. Not many mech will take that time, but I will check. I did pay hime $8,000 for the rebuilt. As for the correct tool I have no idea. I will ask him and tell him what you have told me to see if I we can get it to run. After the hour rest and we get it going it runs great, that is until we stop to fish for the hour then we go through the same process to get going again

davesoutboard :

For that kind of money he should come out and spend the week! That is a ripoff. You could of bought a rebuilt powerhead for much less.

Customer:

everything but the block was to be replaced, plus the carbs were rebuilt not replaced. In central Illinois no one would work on a Johnson so I didn't have much of a choice.

davesoutboard :

I am just saying you can go anywhere on the Internet and purchase that complete powerhead for 3 grand. He saw you coming and ripped you off. I know there are plenty of Evinrude dealers in Illinois that would of done it for less. Point is that is not helping you now. I would do a spark and compression test on this motor. If you want get those results and then post back on this same question. It will not cost you anymore and I would be glad to help you out.

davesoutboard :

Also ask him if he installed new thermostats in each head. For that money he sure should of. If could be the engine is running on the warm side and getting a vapor lock when sitting.

Customer:

You're probably correct as I don't know what a powerhead is. I just know the motor locked up and two pistons were melted. I was told the oil stopped getting to the motor for some reason and that caused the melt down. I will ask him about that also. It is weird that without the prop engaged the motor will run but once you engage and try to go it dies.

davesoutboard :

That just means the engine is not developing enough power at idle to turn the prop. It is probably not firing on all six cylinders, so when you put it in gear it does not have enough power to overcome the load from the prop and it dies. We just need to figure out why, is it a carb, no spark when warm or is there low compression on one or more cylinders.

Customer:

I will pass all of this to the mech and see what we can figure out.

davesoutboard, Marine Mechanic
Category: Boat
Satisfied Customers: 1579
Experience: marina owner for 20+years, certified Evinrude tech
davesoutboard and other Boat Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Dominick

    Marine Mechanic

    Satisfied Customers:

    1009
    25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
< Last | Next >
  • http://ww2.justanswer.com/uploads/dominickb/2008-12-14_204035_dominick.jpg Dominick's Avatar

    Dominick

    Marine Mechanic

    Satisfied Customers:

    1009
    25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    Rigger, Diagnostician

    Satisfied Customers:

    557
    40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness
  • http://ww2.justanswer.com/uploads/whitesmarine/2009-11-07_025719_07011.JPG John White's Avatar

    John White

    Marine Mechanic

    Satisfied Customers:

    306
    11 years experience working on outboards, inboards, sterndrives & pwcs
  • http://ww2.justanswer.com/uploads/OL/oldnewenglandmarine/2012-9-8_15014_icon.64x64.jpg Jason's Avatar

    Jason

    Marine Mechanic

    Satisfied Customers:

    7718
    Degree in Marine Technology. Gas and diesel marine mechanic.
  • http://ww2.justanswer.com/uploads/JA/jacksparrow1956/2011-1-16_191846_009.64x64.JPG Tan's Avatar

    Tan

    MerCruiser Certified Technician

    Satisfied Customers:

    7330
    39 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
  • http://ww2.justanswer.com/uploads/JE/JeffGr/2012-6-15_14217_20001003AA1.64x64.JPG Jeff G.'s Avatar

    Jeff G.

    Marine Mechanic

    Satisfied Customers:

    4172
    39 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance
  • http://ww2.justanswer.com/uploads/dkreines/2008-3-22_155128_daveja.jpg Captain Dave's Avatar

    Captain Dave

    Marine Mechanic

    Satisfied Customers:

    2672
    USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience