QuestionQUESTION: Hi I have a GXV140 engine that had a leaking pan gasket. I empty the oil turned the engine on its top and cleaned the gasket and put on a new gasket and replaced the oil pan. When I started the engine it surged so I took it to the mower shop for a carby service. When it came back it worked fine for 5 minutes then blew white smoke out of the exhaust. I found oil in the airfilter that had come from the breather tube. I then ran the engine for 30 minutes with the breather disconnected from the air intake and there was no smoke at all.
When I connect the crankcase breather tube back up again I get heaps of smoke. The oil level is fine! What could be wrong with the breather valve? Could I have got a little oil in it from turning the engine on it top after draining the oil?
Could I have not put something back in the right position when putting the oil pan back on?
ANSWER: Hello Paul:
Remove and Clean the Crankcase Breather. It has Oil in it and Can Not Operate Properly. When you Turned the Engine Over, Oil Went Into the Cranscase Breather. You can View a Breakdown/IPL of the Mower at this Site Addy, http://hayward.arinet.com/scripts/EmpartISAPI.dll?MF&app=ASP&lang=EN&TF=Mainfram and Select the Catalog American Honda. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting you Question at or Just After 9pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: Hi John,
I am having trouble getting the flywheel off as I don't have a bearing puller. In the mean time I have tried the following. Blew in the breather pipe from the air filter and found that the pressure built up, therefore the breather disc must be seated o.k.
Opened the the oil pan again and checked inside, all was o.k.
So my questions are now:
1. What does the oil defense pipe do and should it be mounted facing left or right when looking at the pipe when the engine is in its normal vertical position (like being mounted on the mower).
2. If there was oil in the breather valve area would it not be blow out after the mower had run for more than half an hour?
3. What is the breather filter made of?
4. Is there a way to get the flywheel off without a bearing puller?
Thanks for your help,
Paul
ANSWER: Hello Again Paul:
The Breather is Designed to Let Blow By from the Rings Exit the Crankcase and Not to Allow Any Liquid (Oil) Exit the Engine. If the Vent Sticks then Oil from the Crankcase is Sucked Into the Carburetor Through the Breather Tube and Causes the Engine to Smoke. I Have Never Disassembled the Crankcase Breather. I Usually Wash them Out With Cleaning Solution and if the Breather Will Rattle When Shaken, it is Working. If Not, then I Replace the Breather with a New One. There are a Couple of Ways to Remove the Flywheel Without the Possibility of Doing Damage, I Suggest Using the Steering Wheel Puller. The Other Way have Too Much of a Chance of Damaging the Flywheel or the Crankshaft. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.
Good Luck
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: Hi John,
I got the flywheel off and found that the breather gauze (filter) was drenched in oil, I cleaned this and re-installed it. I then flipped over the breather disc, as it was a little worn (had a indent in the middle) and re-installed all the parts. I then started the mower and it ran fine (with a loud ticking) for half an hour with no white smoke at all. Next I restarted the mower in the high position (no choke) and this is when the white smoke started again. To stop the white smoke after 30 seconds I pushed the governor and the engine revved hard this stopped the smoke and all was fine again. So it now seems the white smoke will come only after starting the engine when its hot? There is still a thin film of oil getting into the air filter (in the little track inside the filter) from the breather, is this normal? I adjusted the valve clearance when the engine was cold and now there is no ticking.
Thanks Paul.
AnswerHi Paul:
There May have Been an Oil Film in the Tube and I am Sure the Muffler was Contaminated. Once the Oil Burns Off the Inside of the Muffler, the Mower Should be Fine. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.
Good Luck
Respectfully
John
