Excessive Soot Buildup.........2004 Honda BF30

[phatmanmike]

Re: Excessive Soot Buildup.........2004 Honda BF30

everything is beautifull

 

[walexa]

Re: Excessive Soot Buildup.........2004 Honda BF30

BillP,<br /><br />Thank you so much......for actually giving factual information. I do not remember about the roller bearings skipping, but I do know that some greased bearings need a certain amount of friction to prevent skipping...i.e., if almost all friction is removed (by running too slick of a grease), the bearing can tend to skip, which can damage the bearings. Anyway, thanks again first off for factual info.........and secondly, it makes me feel better that your information supports my belief. Like I posted earlier, I do not know everything and I don't claim to know everything........I just like solid information. I don't believe that the Honda has any roller bearings, but I can't say for sure. Anyway, guess these guys just got their cheerios pissed in.....lol.<br /><br />7.....I asked for advice.....not god gifted talents.......I'm 29......and why don't you back up and read BillP's post......

 

[LubeDude]

Re: Excessive Soot Buildup.........2004 Honda BF30

HMMMMMMMMMM.<br /><br />I have to say, that it was and interesting test results, I still wouldnt do it just for fun. It seems to me that it is inviting disaster. But I have seen it go the other way with a 2003 BMW Z3 with only 10,000 miles. It was my neighbors car I was refering to. If anything should hold together, you would think a BMW should, Who knows why it did, but it did. I do not know what or why it failed, he didnt really want to talk about it and still dosnt.<br /><br />Thats the thing about opinions, everybody has one.

 

[gss036]

Re: Excessive Soot Buildup.........2004 Honda BF30

After reading through this post I was going to offer an opinion,BUT, since common sense doen't prevail here, I will keep my 60+ opinion to myself. This would be my 15 yoa grandson's reply.

 

[LubeDude]

Re: Excessive Soot Buildup.........2004 Honda BF30

Im under the impression that there is no more common sense that abounds anymore sometimes. Go ahead and let er fly, after all, its just an opinion. What does you 60+ years tell ya.

 

[MajBach]

Re: Excessive Soot Buildup.........2004 Honda BF30

In the words of Andy Rooney "the world abounds with common nonsense".<br /><br />Bill: What exactly is skating and why is it a problem, especially without a load. Four years of Mech. Eng. and never heard of it once.

 

[stanstv]

Re: Excessive Soot Buildup.........2004 Honda BF30

where did you purchase "tiny Tach" and cost -- am unable to locate same.thanks

 

[DJ]

Re: Excessive Soot Buildup.........2004 Honda BF30

Don't ask for advice you do not want to hear.<br /><br />What a waste of time.

 

[BillP]

Re: Excessive Soot Buildup.........2004 Honda BF30

MajBach,<br />The roller can hydroplane on the oil easier without a load. Then it stops turning and wipes the lube away...leaving metal to metal. I don't think it should be taken that rollers ALWAYS skate but it is a consideration in design parameters.

 

[walexa]

Re: Excessive Soot Buildup.........2004 Honda BF30

Look everybody, I did not ask for advice on revving my engine.......I was asking for information to help me resolve why my engine is putting out so much soot around the idle exhaust port. I appreciate the responses that were trying to be helpful....thanks, and I apoligize that I don't agree with those who believe that bumping the rev limiter in neutral causes damage. <br /><br />stanstv, I got the tiny tach at www.tinytach.com.

 

[LubeDude]

Re: Excessive Soot Buildup.........2004 Honda BF30

Walexa:<br /><br />You have to look at what time of the year it is, everyone wants to get on the water and for some that hasnt happend yet. So we are hanging out at the forums more and have too much time on our hands. Topics going astray is pretty common durring the winter months and springtime. Sorry you felt like you were being atacked, that wasnt the reason for the posts about bumping the rev limiter. The intention was to offer helpfull advice, even if it may have been debateable if it was good advice or not. The people here on the forum are allways willing to help, even at a fault sometimes. There are times when it is important that we put the cabosh to some practics as there are some strange things that come up sometimes espesially with some younger people. <br /><br />Anyway enough of the babbling, what was your original post about? Oh yes, the black deposit on the back of your engine, I guess we will have to see what you dealer has to say when you take it in to them.

 

[BillP]

Re: Excessive Soot Buildup.........2004 Honda BF30

walexa,<br /><br />As a past warranty mgr (BSME & MBA at OMC International) for S.America, Bahamas & Bermuda once told me. They originally put rev limiters on OMC outboard engines for one reason...to stop breaking DRIVE shafts when the props would re-enter the water from wave jumping. Broken drive shafts stopped with rev limiters. Blown powerheads weren't an issue on OMCs from running in the red. Merc powerheads were another story.

 

[cggcpa1]

Re: Excessive Soot Buildup.........2004 Honda BF30

I have a bf 225 with 50 hrs on the motor. It has soot buildup is coming from the idle exhaust ports. I can aslo see a petroleum sheen in the water when the engine is off and boat is in the water after running. I have not asked dealer about it yet.. any ideas?

 

[jim dozier]

Re: Excessive Soot Buildup.........2004 Honda BF30

On a 4-stroke engine the common causes of excessive soot buildup anywhere in the combustion chamber or exhaust would be:<br />1. Overly rich mixture. Check for choke stuck closed or incorrect fixed jets for altitude or overrich setting if adjustable jets.<br />2. Combustion blowby and oil burning due to worn or badly seated piston rings. Also check crankcase ventilation system.<br />3. Incorrect thermostat in a cold climate causing engine to run below operating temperature.<br />4. Incorrect spark plugs (too cold heat range) would cause carbon fouling of plugs but not the exhaust.<br /><br />Just a thought, you aren't using somebody's premix on a 4-stroke are you?

 

[cggcpa1]

Re: Excessive Soot Buildup.........2004 Honda BF30

I am sure the of the gas.. no oil in it..lol The motor has programmed fuel inj. so its not carb issue. I went thru the breakin procedure by the book. How much soot is normal on these big 4 strokes? It is normal to have more soot issues during the first say 60 hrs on the engine? The engine runs like a top.

 

[hondon]

Re: Excessive Soot Buildup.........2004 Honda BF30

Have you considered this .When you free wheel this thing you are not only setting off the rev limiter but you are also frothing up the oil .That frothed up oil has a diminished capcity to hold a film and lubricate.That rev limiter is there to let you know you are doing something dreadfully wrong,not protect you from your own stupidity.Stop free wheelling your machinery.

 

[DJ]

Re: Excessive Soot Buildup.........2004 Honda BF30

Hondon,<br /><br />You're wasting your breath.

 

[hondon]

Re: Excessive Soot Buildup.........2004 Honda BF30

Originally posted by cggcpa1:<br /> I have a bf 225 with 50 hrs on the motor. It has soot buildup is coming from the idle exhaust ports. I can aslo see a petroleum sheen in the water when the engine is off and boat is in the water after running. I have not asked dealer about it yet.. any ideas?

 

[walexa]

Re: Excessive Soot Buildup.........2004 Honda BF30

Ok everybody, haters and all.......I have about 80 hours or so on my Honda 30, and the soot buildup seems to be diminishing. I believe that the soot buildup is due to the rings not being seated, i.e., it just takes a while to break one of these engines in. I also have a john deere lawn mower that would smoke on startup for the first year, but now starts every time without smoking any at all.........I believe it just takes a while for the rings to seat in real good. I am a firm believer in synthetic oils, but I believe it is best to run regular petroleum oil for at least the first 100 hours or so (on an outboard that has great water cooling) to allow complete break-in to occur. My lawn mower has a little over 20 hours in a year, and it is probably ready for synthetic at this point since it has quit smoking at startup. Anyway, thanks for everyones' advice, and I hope this post has helped someone besides me. <br /><br />Waylan

 

[Alaskantech]

Re: Excessive Soot Buildup.........2004 Honda BF30

cggcpal1<br />Is your 225 still showing some black residue around the exhaust ports? If so, take a look at your o2 sensor and see if it has a black or silver lead on it. The early models had the black sensor leads and did show some crap on the exhaust ports. We have changed out a few of these for the same reasons and it cleared up the build up on the ports. Hope this helps you....