Small Engines (Lawn Mowers, etc.)/mower smoking

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Question
The mower is a Scotts 1642 and it starts and runs good for a short time then starts to smoke black and running rough can disengage the mower deck and idle it down the increase the speed and it smooths out until you engage the mower deck then it runs rough again and stalls.

Answer
john
Sounds like you need to rebuild your carburetor. Post the engine brand and all of the model numbers ect. Based on the problem description, the engine isn't getting enough fuel after the choke opens. Very possible the card is in need of an internal cleaning and new parts installed.

Check for a restricted fuel supply. This can range from fuel flow from the tank, through any inline filter, low fuel level in carbs with fuel bowls or a restricted carb of either bowl or diaphragm type. Try using fresh fuel to flush out any stale fuel while checking fuel flow from the tank.

Also check the muffler for good exhaust flow. A damaged, overly rusted or excessively carboned up muffler may have internal damage causing an exhaust restriction.

Exhaust restrictions can cause several problems. Overall poor engine performance, excessive engine heat, failure to accelerate properly, hard starting, rough running and many more.  

Small Engines (Lawn Mowers, etc.)

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BEN

Expertise

I will answer most questions related to this field of small engine repairs,servicing them and trouble shooting problem.Can not answer questions with out the proper Engine Model#,Spec # and Manufacture.

Experience

Presently own a small engine repair shop and a Electrical contracting business.I have been in this field for 26 years.

Education/Credentials
Kohler,Briggs & Stratton,Tecumseh,MTD,Honda,and other Dealer Schools

Awards and Honors
HONORABLE DISCHARGE FROM THE UNITED STATES NAVY VIET NAM SERVICE MEDAL,GOOD CONDUCT AWARD EXPERT MARKSMANSHIP AWARD

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