JustAnswer > Boat
Ask A Question|Register|Login|Help
JustAnswer

Boat
Ask a Boat Question, Get an Answer ASAP!

Have your own Boat question?

4 Marine Mechanics are Online Now
characters left:
Not a Boat Question?

Related Boat Topics:

  • Box
    • ,
  • Two
    • ,
  • Back
    • ,
  • Coil
    • ,
  • Cost
    • ,
  • Gear
    • ,
  • Info
    • ,
  • Pull
    • ,
  • Stop
    • ,
  • Unit
Bookmark and Share

Question

hi i have a honda b100 10 h.p. outboard. I accidentally left the top cover off of it in a rain storm two weeks ago, and now i don't seem to have any spark. Any suggestions?

Submitted: 455 days and 4 hours ago.
Category: Boat
Value: $15
Status: CLOSED
+
Read More
Posted by orcamarine 455 days and 4 hours ago.

Answer

Hi XXXXX,
I would start by getting some WD40 and spraying the whole engine, all the electrical connectors are male/femle bullets which you are able to pull apart, pull them apart and spray off, if need be give them a clean using either sandpaper or a small wire brush, if the connectors have gone green this is a must, find the stop switch and trace the wires back o a connector and try for a spark while disconnected, you may need to remove the flywheel (not easy without puller and torque wrench) to clean the coils and magnets as the airgap between them may not be there now due to build up of ferrous materials(rust).
If non of this gets the spark back you may need to take the engine to a specialist who will be able to diagnose the exact fault.
Many Thanks Orcamarine

455 days and 3 hours ago.

Reply

thanks for your answer. I have already sprayed everything down with wd and done some testing on the kill switch. I found that it had continuity to gnd. So i disconnected the coil wir from the switch and it works fine. Then checked continuity there and found continuity to ground on that wire. then disconnected wires at coil and found wire going to condenser had continuity to ground. is this normal?                      ps Iam a certified mechanic and do understand more than someone without my background. Iwork on diesel engines not automotive so much so a spark controlled engine is not really my thing.

Posted by orcamarine 455 days and 3 hours ago.

Answer

Hi XXXXX
Thats handy to know about mechanical knowledge it make life a little easier,
Can you confirm this is cdi or points ignition, just want to make sure we are on the same engine (yr wise they differ on ignition)
Many Thanks Orcamarine

455 days and 3 hours ago.

Reply

I see what looks like a points assembly under rubber cap over cam gear. But I am not familiar with a cdi system. Could Ihave more info to help me identify a cdi system please.

Posted by orcamarine 455 days and 3 hours ago.

Answer

Cdi ignition has wires that come from under the flywheel into a box and back out of the box to the coils whereas points have wires straight to the coil from under the flywheel.
You mentioned a condensor where was this under the flywheel? The points if it is point system is under the main flywheel if this has been out in the weather chances are the points have "rusted" shut so will need cleaning, failing this if its cdi you will need to ascertain you have voltage coming off the wires out from under the flywheel, if you have voltage from there but nothing out of the cdi box to the coil then the cdi is gone.
If you have any pics of the motor with hood off this will help identify it.
Many Thanks Orcamarine

Posted by orcamarine 455 days and 3 hours ago.

Answer

Just realised I have the honda parts catalogue on my home computer if you have your serial number and model I can check it easily :)

Posted by orcamarine 455 days and 3 hours ago.

Answer

points diagram
graphic
View Full Image
graphic
View Full Image

455 days and 2 hours ago.

Reply

Ihave emailed some pictures of my engine. Ibelieve it is a cdi ignition. The only thing I am unsure about is that from what i can see there are wires that come out from under flywheel and go to box but there is also a wire that comes out from under flywheel that goes directly to the coil. From the coil one wire also goes to cam area where it looks like there are points. the emailed pictures should show this better. If you need more pictures let me know. thanks again for all your trouble.

Posted by orcamarine 455 days and 2 hours ago.

Answer

Hi XXXXX
To post pictures you need to use the button in the box you type in that looks like a tree, where did you email the pictures to?Many Thanks Orcamarine

455 days and 1 hours ago.

Reply

graphic
View Full Image
graphic
View Full Image
graphic
View Full Image

455 days and 1 hours ago.

Reply

Hi orcamarine.as you may have realized already the internet is also not my best thing . I hopr these pictures will help. Ihave also did some more testing and found that there is power to my coil but nothing coming out if it. Ihtink it is probabaly my coil that is shot. Any idea what a new one costs?

Accepted Answer

Hi XXXXX,
I am uk based and prices over here are completely different to US prices, my parts list does not show up the coil so is not available here, you may possibly need to locate a 2nd hand unit, I would expect a new unit to cost about $100 as the equivelant coil would cost about £100, 2nd hand anything from $20 and up.
Hope my info has helped a little.
Many Thanks Orcamarine

Picture
Expert: orcamarine
Pos. Feedback: 100.0 %
Accepts: 
Answered: 8/24/2008

Marine Mechanic

Over a decade of working on all the major brands of outboards.

+
Read More

Related Boat Questions

  • i have a 1993 90hp merc trim r starter doesnt do anything it
  • Engine running faster than the prop /? sounds like a clut...
  • It seems my 1998 Yamaha XL 1200 2 stroke has somehow jumped
  • I need the wiring diagram for a MAYFAIR Marine 500gph bilge
  • why is my warning light flashing saying there is no petrol
  • i blew the water pump and my 4 cyl. volvo and it got hot now
  • I had a90 fleetwood and was wondering if it was an alumium
  • We have a 115 Yamaha outboard. Was running fine to get to th...



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2009 JustAnswer Corp.