| Author |
Message |
    
ryan poodel
New member
Username: dvxdude
Post Number: 1
Registered: 08-2009
| | Posted on Wednesday, August 05, 2009 - 03:12 pm: | 
|
Hi everyone. I'm having trouble with my motor. I just bought it with a 14' aluminum boat. It runs good, starts first pull but it seems to be leaking oil/gas. I checked the oil when I got it, he said he changed it and it looked clean and was at the full mark. I took it out for the first time and you could see the oil/gas on the water when I would stop. Not a whole lot but coming out somewhere. Now the oil is ABOVE full and smells a bit like gas. Motor still runs fine but I dont want it leaking into the water.
what do you think it could be? I took the cover off and the motor looks to be covered in a bit of oil. Just looking for a few ideas on the problems before I take it to get looked at... |
pilotart
Advanced Member
Username: pilotart
Post Number: 125
Registered: 03-2008
| | Posted on Wednesday, August 05, 2009 - 04:38 pm: |
|
Sounds like your Fuel Pump Diaphragm may have a pinhole leak.
This pumps gas into your oil, look it up here:
[url]http://www.boats.net/parts/search/Honda/Outboard%20Engine/parts.html[/url]
If it shows "not available" I would telephone them to see what could be used. |
william g moore jr
Advanced Member
Username: william_m
Post Number: 423
Registered: 05-2009
| | Posted on Wednesday, August 05, 2009 - 07:14 pm: |
|
Along with the fuel pump (Which I agree with)#080903-161-935-024 --you might have lost the bottom crank seal after it soaked in fuel for a time? #049813-91202-881-003. If you go after that you may find it a chore/ so would do the fuel pump first and see if it wants to come back to the party- It may just be passing excess crankcase oil out the hose near the pee hole. Let hope. |
JUST-IN-TIME
Senior Member
Username: justintime
Post Number: 6922
Registered: 09-2006
| | Posted on Saturday, August 22, 2009 - 08:56 pm: |
|
fuel; pump |
william g moore jr
Advanced Member
Username: william_m
Post Number: 463
Registered: 05-2009
| | Posted on Thursday, August 27, 2009 - 07:52 pm: |
|
There is a crankcase vent system (the oil cap screws into) that sends oil vapor every where to get it back in the crankcase, Check those little hoses for leaks and the big chamber near the starter handle for leaks. |
ryan poodel
New member
Username: dvxdude
Post Number: 2
Registered: 08-2009
| | Posted on Friday, August 28, 2009 - 08:04 pm: |
|
thx a lot guys. I have the motor at a friends place and hes looking at it. I'll mention these things to them. You all are a great help. Thx again |
Dennis Christensen
New member
Username: cudennis
Post Number: 1
Registered: 09-2009
| | Posted on Saturday, September 12, 2009 - 10:35 am: |
|
Greetings Everyone,
I have a perfectly running Honda B75 7.5 hp. I keep it in my heated garage in the winter. The oil level never goes down, but I'm a rookie and I want to change it and don't know where I drain it at. The gas tank has the side container holding an extra bottle of unlabeled oil that I have rarely used so I don't even know what type and weight oil I'm supposed to use when I change it. I don't have a service manual. Can any of you wizards clue me in? Plus, I would like to know if there is anything else critical that I need to do at this point? It's an old ugly orange and white engine, but it has performed flawlessly for years. |
pilotart
Advanced Member
Username: pilotart
Post Number: 156
Registered: 03-2008
| | Posted on Saturday, September 12, 2009 - 11:03 am: |
|
The drain plug is on Starboard side just above top junction with lower leg (fat slot screw plug with gasket ring).
Recommended oil is SAE 10W-40 SE or SF or better (Marine Type preferred) and capacity is .8L or 27 fluid Oz.
Engine oil service interval is every 100 hours or six months, WOF.
Lower unit uses Hypoid 90 Gear Oil (GL4 or GL5) and capacity is .23L or half-pint. Two plugs, upper to check level and lower to drain/fill, leave upper plug out until overflow on fill (also have gasket rings to check or replace).
Service interval is 200 hours or one year, WOF and same for Spark Plugs, Theromstat and valve clearances:
IN - EX = 0.06 mm - 0.10 mm (0.002" - 0.004")
with engine cold, most recommend a little more, like 0.005".
Fuel lines and filters as well.
Remove prop, check shear-pin and for monofilament line wrap, grease shaft and replace. |
Dennis Christensen
New member
Username: cudennis
Post Number: 2
Registered: 09-2009
| | Posted on Saturday, September 12, 2009 - 11:13 am: |
|
pilotart, Fantastic. Thank you for your prompt response and great info! Sincerely appreciated.
- Dennis |
pilotart
Advanced Member
Username: pilotart
Post Number: 157
Registered: 03-2008
| | Posted on Saturday, September 12, 2009 - 11:25 am: |
|
Dennis,
You are welcome. BTW it is always better to "START NEW DISCUSSION" (thread) with this type of question as it is more likely to be seen and will be more helpful for others future searches on subject.
Check my answer again, as I added a check for your propellor.  |
Nick Nichols
Member
Username: pailolo
Post Number: 93
Registered: 09-2008
| | Posted on Tuesday, September 22, 2009 - 12:29 am: |
|
You can download a free manual for your motor on this website.
http://www.honda-marine.com/owners/OwnerManuals.aspx |
Wayne Walker
New member
Username: tech_1
Post Number: 2
Registered: 10-2009
| | Posted on Wednesday, October 07, 2009 - 04:54 pm: |
|
Guys
Although the diaphram assigned part # from Honda is unavailable, try part # 161819935024 will work. |
jeffrey alan miller
New member
Username: jamfishing
Post Number: 1
Registered: 11-2009
| | Posted on Saturday, November 07, 2009 - 10:48 pm: |
|
hello i also hav e a honda bf7.5 runs great i mean perfect but im getting water in oil a good bit and oil light flickers can you help me |
jeffrey alan miller
New member
Username: jamfishing
Post Number: 2
Registered: 11-2009
| | Posted on Saturday, November 07, 2009 - 10:53 pm: |
|
hello i also hav e a honda bf7.5 runs great i mean perfect but im getting water in oil a good bit and oil light flickers can you help me please i just dont understand if its a head gasket how could it run so good. other than head gasket i dont have any idea. |
Nick Nichols
Advanced Member
Username: pailolo
Post Number: 101
Registered: 09-2008
| | Posted on Saturday, November 07, 2009 - 11:05 pm: |
|
Try checking your thermostat. If the t-stat is stuck in the open position you can get condensation build up in the crankcase. |
jeffrey alan miller
New member
Username: jamfishing
Post Number: 3
Registered: 11-2009
| | Posted on Sunday, November 15, 2009 - 06:47 pm: |
|
ok thanks i took the thermostat out and it is stuck open and you could see where water was getting past the gasket into the egr passage but when i blow air into water passage it also comes out of small hole in head that goes into egr passage on intake manifold that doesnt seem normal to me. when you take intake manifold off and look at the head the bottom right hand bolt for intake come up one hole wher does that passage go. if you could give me an answer i would really appreciate it. thank you. |
JUST-IN-TIME
Senior Member
Username: justintime
Post Number: 7103
Registered: 09-2006
| | Posted on Friday, November 20, 2009 - 03:18 am: |
|
start a new thread please |
jeffrey alan miller
Member
Username: jamfishing
Post Number: 4
Registered: 11-2009
| | Posted on Friday, November 20, 2009 - 09:47 pm: |
|
hello my name is jeff and i have a honda bf 7.5 and im getting water in oil a good bit but motor runs perfect and yes my thermostat is stuck open but i think im leaking in water at plastic oil fill housing where hose comes from intake into oil fill cap housing i dont know where its suppose to go from there i think housing is leaking and do they make a new revised metal oil fill housing. ive been an auto mechanic for twenty years this is my first outboard if you could answer this one question i would be home free and really appreciate it thank you. |
pilotart
Advanced Member
Username: pilotart
Post Number: 177
Registered: 03-2008
| | Posted on Saturday, November 21, 2009 - 11:06 pm: |
|
jamfishing,
What JIT meant by "start a new thread" was for you to open a new discussion.
Go back to the Topic List and click on the START NEW DISCUSSION text at the top of the column and you can start with a descriptive title in the "Subject" box.
This will greatly improve the quantity and quality of responses for your problem. |
