[Rhodes22-list] Honda BF9.9 Oil from carb
ROGER PIHLAJA
roger_pihlaja at msn.com
Wed Jun 12 11:12:56 EDT 2024
Patrick,
I’m sorry, I tend to skip obvious steps. Yes, you have to remove the throttle linkage and carb to get to the float bowl.
Roger Pihlaja
S/V Dynamic Equilibrium
1978. Sanford, MI
Sent from my iPhone
> On Jun 12, 2024, at 11:04 AM, PBR <pbryanriley at gmail.com> wrote:
>
> Thanks Roger,
> Can't access the float bowl screws without removing the carb but.It looks
> like only two bolts to pull the carb off. So i will attempt to clean up
> and unstick the needle next time I get back to boats in a couple of weeks.
> Patrick
>
>
>> On Thu, Jun 6, 2024 at 6:53 PM ROGER PIHLAJA <roger_pihlaja at msn.com> wrote:
>>
>> Patrick,
>>
>> Assuming the problem is a sticky needle &/or float, you can clean it out
>> with minimal disassembly:
>>
>> Remove the float bowl and fuel line from the carburetor. Gently move the
>> float. It should move several mm with little resistance.
>>
>> Spray carb cleaner into the fuel line inlet. You should see carb cleaner
>> dripping out of the needle valve.
>>
>> Remove the float and needle valve. Be careful not to lose the needle
>> valve seat seal. Inspect the male part of the needle valve. Clean off any
>> residual deposits with carb cleaner. Spray carb cleaner up into the needle
>> valve seat passage. You should see carb cleaner dripping out of the fuel
>> line inlet.
>>
>> Reassemble the carb and reconnect the fuel line.
>>
>> Since you suspect the oil is fuel diluted, I recommend changing the oil.
>>
>> A compression test of 110 psi isn’t great. But, the engine should still
>> run.
>>
>> Roger Pihlaja
>> S/V Dynamic Equilibrium
>> 1978. Sanford, MI
>>
>> Sent from my iPhone
>>
>>>> On Jun 6, 2024, at 1:06 PM, PBR <pbryanriley at gmail.com> wrote:
>>>
>>> Roger, et. al.,
>>>
>>> Finally had a chance to troubleshoot this issue that began as oil
>> dripping
>>> from carb intake and smoking some.
>>> I can't find any sign of a breather that might be clogged, everything
>> under
>>> the hood is pristine clean.
>>>
>>> Oil was definitely overfilled. I drained out about a pint and it still
>>> shows nearly full. Golden color difficult to see but by rolling the
>>> dipstick on a paper towel you could see the top level. What I drained
>> out
>>> also seems to have a viscosity lower than I would expect of pure oil and
>> my
>>> wife said it smelled of gas. So, stuck float is or was a most likely
>>> culprit.
>>>
>>> I checked compression and got 110 psi on both cylinders. squirted in some
>>> oil but could not get it to change. Seems low but could be my 40 year
>> old
>>> tester and me trying to get a good push seal. So, my rings are probably
>>> not an issue.
>>>
>>> So, what next with a sticky float.? I don't want to take the carb apart
>>> with my skill level and lack of a clean shop to work in. It may be fixed
>>> already and I was just seeing the after effect of overfilled oil. I have
>>> the motor on a dolly so I can tip it on it side, tap on stuff etc.. I
>>> might just try to see if it runs OK before putting in clean oil in case
>> it
>>> is still stuck.
>>>
>>> Patrick
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>> On Wed, Apr 3, 2024 at 8:48 AM ROGER PIHLAJA <roger_pihlaja at msn.com>
>> wrote:
>>>>
>>>> Hi Patrick,
>>>>
>>>> I would check the oil level 1st. On a 2 cylinder engine, I would pull
>>>> both spark plugs when checking the compression. That way, the starter
>> will
>>>> spin the engine faster and both cylinders will see the same test RPM.
>>>>
>>>> Roger Pihlaja
>>>> S/V Dynamic Equilibrium
>>>> 1978 Sanford, MI
>>>> ________________________________
>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> on behalf of
>> PBR
>>>> <pbryanriley at gmail.com>
>>>> Sent: Wednesday, April 3, 2024 8:36 AM
>>>> To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org>
>>>> Subject: Re: [Rhodes22-list] Honda BF9.9 Oil from carb
>>>>
>>>> Thanks Roger,
>>>> I will try all of these suggestions. I'll keep you all posted but it
>> might
>>>> take me a while to find the time. I do use just ethanol free gas and my
>>>> modus operandi has been to run the gas out, but I admit during this time
>>>> when I have been just starting and running the motor periodically I
>>>> probably have skipped that a few times. I have a compression tester
>> with
>>>> the rubber insert. Came with a tune up kit I picked up about 35 years
>> ago
>>>> so probably american made and still working... To do this I am
>> guessing I
>>>> would hook up the battery and crank the motor while holding the tester
>> in
>>>> place? both plugs out or one in one out. (I seem to remember with 8 cyl
>>>> engines my pals just did one at a time and started the engine).
>>>>
>>>> I do have an alternate motor ready to go on a Rhodes so if I get some
>>>> sailing opportunities I have no excuses not to get out there.
>>>>
>>>> Patrick
>>>>
>>>>
>>>> On Tue, Apr 2, 2024 at 11:24 PM ROGER PIHLAJA <roger_pihlaja at msn.com>
>>>> wrote:
>>>>
>>>>> Hi Patrick,
>>>>>
>>>>> I’ve been thinking more about your issue with engine oil dripping out
>> the
>>>>> carburetor. Check the engine oil level with the dip stick. If the oil
>>>>> level is high; then, you may have an issue with the float level in the
>>>>> carburetor. High fuel level in the float bowl would allow fuel to
>>>>> contaminate the engine oil. Eventually, the diluted engine oil level
>>>> would
>>>>> get high enough that oil would start backing up into the carburetor,
>>>>> resulting in your observed carb oil drip. A sticky float would be
>>>>> consistent with an engine that sits a lot between runs. I always
>>>>> disconnect the fuel line and run the engine until the carburetor runs
>>>> dry.
>>>>> I think this explanation is more likely than stuck or worn piston
>> rings.
>>>>>
>>>>> Roger Pihlaja
>>>>> S/V Dynamic Equilibrium
>>>>> 1978 Sanford, MI
>>>>> Sent from my iPhone
>>>>>
>>>>>> On Apr 2, 2024, at 4:02 PM, ROGER PIHLAJA <Roger_Pihlaja at msn.com>
>>>> wrote:
>>>>>>
>>>>>> Hi Patrick,
>>>>>>
>>>>>> I have a Honda BF9.9AXSA outboard motor, model year 2000. I use it on
>>>>> my Walker Bay RIB. If you have a compression tester, you can quickly
>>>>> determine the status of your piston rings and valves. The factory
>>>>> compression spec is 156 +/- 14 psi when the engine is cold. If your
>>>>> compression meets spec in both cylinders; then, your piston rings and
>>>>> valves are OK. If the compression values are low; then, squirt some
>>>> engine
>>>>> oil into the spark plug hole on each cylinder and retest the
>> compression.
>>>>> If the compression improves; then, you have worn/stuck piston rings.
>> If
>>>>> the compression does not improve; then, you have valve leakage issues.
>>>>> The only way to fix valve leakage is with a cylinder head rebuild.
>>>>> However, since your engine still runs, if your problem is stuck piston
>>>>> rings; then, you may be able to free them up. Drain out about ½ the
>>>>> crankcase oil and refill with a product like Slick 50 Synthetic Oil
>>>>> Treatment. Squirt some Slick 50 into each spark plug hole, gently
>> crank
>>>> it
>>>>> over a few revs, and then let it sit overnight. The next day, start
>> the
>>>>> engine, and let it run at idle for 15-20 minutes. Then, shut it down
>> and
>>>>> change the oil. Hopefully, this will free up the piston rings. I
>> don't
>>>>> have much faith in any fuel additive's ability to free up stuck piston
>>>>> rings.
>>>>>>
>>>>>> My M/Y 2000 engine has a crankcase vent that dumps directly to the
>>>>> atmosphere via a rubber hose on the port side. The crankcase breather
>>>>> cover sits just in front of the timing belt sprocket on the top of the
>>>>> engine. I've never had my breather cover off because I've never needed
>>>> to
>>>>> get in there. However, given that it vents to the atmosphere, I doubt
>>>>> there is any sort of PCV valve that might get stuck or clogged.
>>>> However, I
>>>>> suppose it's possible the vent port itself &/or the hose might be
>>>> clogged.
>>>>> So, it might be worth a look underneath the breather cover just to
>> verify
>>>>> that the plumbing is free and clear.
>>>>>>
>>>>>> Try these suggestions and let's see what happens. Good Luck!
>>>>>>
>>>>>> Roger Pihlaja
>>>>>> S/V Dynamic Equilibrium
>>>>>> 1978 Sanford, MI
>>>>>>
>>>>>>
>>>>>>
>>>>>> ________________________________
>>>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> on behalf of
>>>>> Michael D. Weisner <mweisner at ebsmed.com>
>>>>>> Sent: Tuesday, April 2, 2024 2:12 PM
>>>>>> To: 'The Rhodes 22 Email List' <rhodes22-list at rhodes22.org>
>>>>>> Subject: Re: [Rhodes22-list] Honda BF9.9 Oil from carb
>>>>>>
>>>>>> Patrick,
>>>>>>
>>>>>> I think that if you have a problem with "stuck" piston rings, you
>> would
>>>>> know it. I would suspect that there would be a loud noise and the
>> engine
>>>>> probably would not run at low speeds as it seized up.
>>>>>>
>>>>>> My guess is more a problem with the crankcase ventilation system.
>>>>> Usually there is a PCV style one-way valve that sucks oil fumes out of
>>>> the
>>>>> crankcase, burning them by introducing into the air intake. Check the
>> air
>>>>> filter which is usually part of the recirculation circuit as it can
>>>> become
>>>>> saturated with oil.
>>>>>>
>>>>>> Is the engine consuming oil? Have you checked the oil level using the
>>>>> dipstick? The smoke and excess oil can be the result of worn (not
>> stuck)
>>>>> piston rings or valves that are allowing the oil to pass into the
>>>>> combustion path.
>>>>>>
>>>>>> Mike
>>>>>> s/v Wind Lass ('91)
>>>>>> Nissequogue River, NY
>>>>>> I’d rather be sailing :~)
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> On Behalf Of
>>>>> PBR
>>>>>> Sent: Tuesday, April 2, 2024 1:52 PM
>>>>>> To: rhodes22-list at rhodes22.org
>>>>>> Subject: [Rhodes22-list] Honda BF9.9 Oil from carb
>>>>>>
>>>>>> Hello all.
>>>>>>
>>>>>> I have a Honda 9.9 2 cyl. that has been mostly sitting for a few
>>>> years.
>>>>>> It sat on the boat in Kitty Hawk (humid environment) for one winter
>>>>> untouched (2018). Since then I have not used it on the water but
>> always
>>>>> expecting that I might anytime soon I did not winterize but dutifully
>>>>> started it every couple of months throughout the winters and ran it a
>> bit
>>>>> with the water hose. Always started easy and ran good. Some smoke at
>>>>> first but not enough to concern me. This time as I was about to put
>> the
>>>>> thing in to use I put a bucket (trash can ) around it and ran it again.
>>>>>> Started easy , runs good, again some smoking, enough to get me curious
>>>>> but not constant at all speeds.
>>>>>>
>>>>>> Looking under the cowling I see oil dripping from the carb intake
>>>> (clean
>>>>> golden oil). Still running fine.I am hoping there may be a *vent clog*
>>>> or
>>>>> something rather than just frozen rings. Any thoughts? *Stuck
>> valve?* (
>>>>> but runs pretty good)
>>>>>>
>>>>>> This 1999 motor has VERY VERY low miles and looks brand new so I hate
>>>> to
>>>>> scrap it but given the date of manufacture the value is probably less
>>>> than
>>>>> a marine repair will charge me to take a look. Hoping for a miracle
>>>>> solution. Twice I have removed mud dauber bee nests from under the
>>>> cowling
>>>>> so maybe I can find something suspicous.
>>>>>>
>>>>>> The trash can I ran it in did have some residual oil clinging to the
>>>>> sides but I don't know how much might be normal.
>>>>>>
>>>>>> My plan next trip in a couple of weeks is to look for clogs and try
>>>>> running again maybe with a high dose of sea foam or something. Not
>> sure
>>>> of
>>>>> any miracle sauce that might help stuck rings.
>>>>>>
>>>>>> Patrick
>>>>>>
>>>>>
>>>>
>>
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