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 Jason Your Own Question

Jason
Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 10119
Experience:  Degree in Marine Technology. Gas and diesel marine mechanic.
44667847
Type Your Boat Question Here...
Jason is online now
A new question is answered every 9 seconds

Is this normal??? http://www.youtube.com/watch?v=zo81sVX3lFY&feature=youtu.be BR

Resolved Question:

Is this normal???

http://www.youtube.com/watch?v=zo81sVX3lFY&feature=youtu.be

BRAND NEW motor. Took it out for the FIRST time today and it wouldn't start. I replaced the plug and it now starts.

I have never had a honda product run this rough.
Submitted: 2 years ago.
Category: Boat
Expert:  Jason replied 2 years ago.

My name is XXXXX XXXXX I will be helping you today. Most questions will involve troubleshooting, and usually take many posts back and forth. Post back with questions as needed.

.

By normal are you talking about the vibration/shaking at idle?

Customer: replied 2 years ago.
Yes. The idle seems very rough. Also, I don't understand why I would have a fouled plug on a brand new motor.

Every honda product I ever owned has been super reliable and has run smooth as silk.
Expert:  Jason replied 2 years ago.

That shakey idle is pretty typical, as it is a single cylinder engine. There is nothing wrong with the engine as long as it smooths out when you rev it up. If you were to compare it against another BF5 (and you should do so if you do not believe me) you would see they are the same.

As far as it not running on the original spark plug goes. If it was ever transported the wrong way and oil got to the plug that would cause it to fould out. Also, you can have bad spark plugs, even new out of the box, that is not all that uncommon either. But from your youtube video, it does look normal. If you youtube search videos for another 5 hp you would see they are the same as yours. If you youtube search for BF8's you would see how much smoother they are because they are twin cylinder engines, and twins idle much smoother than single cylinder engines.

.

Feel free to post back with questions

Best,

Jason

Customer: replied 2 years ago.
http://www.youtube.com/watch?v=BnTfLAAFIXE

http://www.youtube.com/watch?v=4tFJnDO3txA&feature=results_main&playnext=1&list=PL9DB6D52CD9384636

http://www.youtube.com/watch?v=cZTzUgu0iU8

I still think my motor is awfully rough comapred to these. I have owned honda products in the past and this is the first one i've ever had trouble with.

I ran the motor on a stand before I took it out and it started...so no fouled plug. 2 weeks later ...first time out and no start.

I've done some research and there seems to be problems with the BF5's because of the very small carb jets....is this true?

I just checked the 2nd plug and it is dark and dirty after just a few minutes of runtime. Could it be that the ring hasn't seated yet?
Expert:  Jason replied 2 years ago.

The first video the motor is above idle, so it is smoothing out like it normally would.

The 2nd one looks like it has vibration to me.

Look at this one;

http://www.youtube.com/watch?v=-c_bdTk0Aq4

Before he throttles it up you can see the vibration.

http://www.youtube.com/watch?v=7ldH0GdQnVU

Same here,

.

Now you can try adjusting the idle mixture screw, that might clean it up a little bit, and get rid of some of the vibration. But you will always have some vibration. That is going to be the nature of the beast with a single cylinder 4 stroke engine. At the same time, the idle mixture screws are capped over by the factory because the EPA mandates that they are. You would have to drill and pull the cap. Being a brand new engine you would probably loose your warranty. So it might be in your best interest to bring it back to the dealer and have them do it, that way it does not affect your warranty.

Also, as far as the carb jets go. That is an issue with all 4 stroke engines. The carb jets are tiny. And the smaller the engine the smaller the carb jets are.

.

The rings are likely fine, as you typically do not see issues with rings on the hondas.

.

Post back with questions

Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 10119
Experience: Degree in Marine Technology. Gas and diesel marine mechanic.
Jason 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
 
 
 
Chat Now With A Marine Mechanic
Jason
Jason
Marine Mechanic
10119 Satisfied Customers
Degree in Marine Technology. Gas and diesel marine mechanic.