QuestionQUESTION: I overfilled my 8 HP Briggs engine on my snow blower with oil. Ever since it smokes whitish blue. Is there an easy fix?
Thanks Tom
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Answer Did you remove the excess oil? When over-filled oil engines run some of the excess oil gets into the muffler causing to to smoke.
If you removed the excess oil and have the correct amount of oil in the engine you should be fine. The fastest way to reduce the smoke is to replace the muffler...but this is expensive. You can remove the muffler and soak it in parts cleaner to help dissolve the oil. Cleaning the muffler should help reduce the smoking.
Eric
The smoke is not coming from the muffler. It appears that it is coming from the bottom of the engine.
ANSWER: Hello Tom:
It is Possible you have Blown a Seal or Gasket or the Crankcase Vent May be Clogged and Causing Back Pressure in the Crankcase that will Push the Crankcase Oil Past a Seal or Gasket. 1- If you Did Not Clean the Crankcase Breather/Vent, then I Suggest you Do So. An Over Filled Engine will Usually Fill Up the Crankcase Breather/Vent when the Crankcase was Over Filled and Prevent it from Operating as Designed even After the Oil Level has Been Corrected. 2-Clean the Engine with Pressurized Water and then Operate the Unit. Look for an Oil Leak During Operation. If you Locate a Leak, then you can Either See Where/What the Leak is. Once you Locate Where/What is Causing the Smoke, then I can Better Instruct you on How to Best Correct this Problem. Send me the Model and Type or Spec Numbers Off the Engine and the Mower Model Numbers, Please. With these I can Locate the Proper Manual and Better Assist you. The Engine Model Numbers May be Stamped Into the Blower Housing (metal engine cover) Above the Spark Plug. The Mower Model Numbers are Usually Located Under the Seat on a Sticker on the Body of the Mower. If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. Have a Happy Holiday Season and May the All Mighty Bless You and Yours. Be Safe and Happy. 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 your Question at or Just After 8pm EST (US). My New Day Starts then. Comments and Ratings are Greatly Appreciated. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: The smoke seems to be coming out of what I believe is the breather tube you asked me about. I don't know much about engines. Do you think this would be expensive to have someone repair it?
Thanks Tom
It is a 8 HP Briggs on a snowblower that is about 12 years old.
CRAFTSMAN
8 HORSEPOWER 26" DUAL STAGE SNOW THROWER
Model# 536886621
ANSWER: Hello Again Tom:
You can View a Breakdown/IPL of this Engine at this Site Addy, http://www.outdoordistributors.com/ and Select the S. Then Select Sears. Then Select 143. Now Select Dont have Part Numbers. Then Enter the Model Numbers 143.948001. According to the Sears Unit Model, this is Supposed to be the Model Number of your Engine. **If it is Not then Send me the Engine Make, Model, Type/Specification Numbers, Please. With these I can Locate the Proper Manuals and Better Assist you.** Then Select your Model and Download the File for Online Viewing. You can Most Likely Make this Repair yourself. The Crankcase Breather/Vent Requires Cleaning. The Following is a Basic Instruction File for Removing Crankcase Vents on this Model Engine. Any Input is Appreciated. **Remove the Breather Assembly from the Carburetor. Grip the Gas Hose with Vice Grip Pliers to Stop the Gas Flow to the Carburetor. Remove the Gas Line at the Carburetor. Unbolt the Carburetor From the Engine and CAREFULLY Turn the Carburetor to Remove the Linkage from the Carburetor Throttle Thru Shaft and Choke (as Required). Remove the Bolts from the Crankcase Breather. Disassemble the Crankcase Breather and Clean the Oil from the Unit. Assemble and Attach to the Engine. Re-Attach the Carburetor to the Engine. Connect the Gas Line and Remove the Pliers.** You can Also Get More Detailed Instructions at the Following Site Addys. 1- http://www.repairfaq.org/samnew/lmfaq/lmclctc.htm 2- http://www.cpdonline.com/692509.pdf . If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. Have a Happy Holiday Season and May the All Mighty Bless You and Yours. Be Safe and Happy. 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 your Question at or Just After 8pm EST (US). My New Day Starts then. Comments and Ratings are Greatly Appreciated. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: Thanks John, It' in the shop now. They checked the compression, and that was good. They ordered a new crankcase breather assembly. They are not sure if that is the problem. Would there be good compression if the piston/rings were damaged. The machine has good power.
Once again thanks for all of your help.
Tom
AnswerHi Again Tom:
Usually if a Ring is the Reason for Blow By in the Crankcase, then No the Compression should Not be Good, but be on the Low Side (90 PSI or Less). Since you Over Filled the Engine with Oil and then this Problem Started, the New Crankcase Breather should Correct this Problem. If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. Have a Happy Holiday Season and May the All Mighty Bless You and Yours. Be Safe and Happy. 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 your Question at or Just After 8pm EST (US). My New Day Starts then. Comments and Ratings are Greatly Appreciated. Thanks.
Respectfully
John
