Why does my motor run but not under load?
This is probably going to boil-down to the type of motor, to identify the issue. Electric motors do wear out, but there are capacitor-start/ and capacitor-run motors that have outside parts. If possible, tell us if this a stand-alone electric motor problem. And if you can tell us what the name-plate on the motor says it will be helpful.
What causes a small engine to run too slow?
Cranking speed too slow to start. Spark plug loose. Low or no compression. Spark plug gap incorrect. Engine not properly warmed up. Running out of fuel. Low idle set too low (Below 1000 RPM). Low idle fuel setting too lean. Electric clutch dragging. Parasitic load on PTO shafts. Crankshaft end play zeroed drive. Water contaminated fuel.
When to run an electric motor over load?
Although many motors have service factors of 1.15, running the motor continuously above rated load reduces efficiency and motor life. Never operate over- loaded when voltage is below nominal or when cooling is impaired by altitude, high ambient temperature, or dirty motor surfaces.
How to troubleshoot a small engine at home?
When engine starts, return choke to full open immediately. Position throttle control to desired setting.. Move throttle/choke lever to choke position. Pull starter rope to set engine on compression. Return starter rope, then give a full, steady pull. When engine starts, move the control lever to the desired setting.
Cranking speed too slow to start. Spark plug loose. Low or no compression. Spark plug gap incorrect. Engine not properly warmed up. Running out of fuel. Low idle set too low (Below 1000 RPM). Low idle fuel setting too lean. Electric clutch dragging. Parasitic load on PTO shafts. Crankshaft end play zeroed drive. Water contaminated fuel.
What’s the best way to troubleshoot an engine?
Often best way to identify and correct the cause of engine trouble is to think like a mechanic and use a systematic approach to problem solving. We’ve listed some common problems and potential causes below. First, identify the problem you’ve encountered with your engine, then rule out each potential cause.
What causes an engine to idle up and down?
A malfunctioning MAF sensor can cause a wild up/down engine idle speed (say, 0-2,000 rpm). This might be caused by a loose harness connection or by a damaged or contaminated sensing wire. The MAF sensor measures the amount of air flowing through the throttle valve.
What happens when engine idle speed is above programmed range?
When the engine idle speed is either above or below the programmed range, the ECU prompts the ISC to either increase or decrease bypass airflow. Naturally, as the IAC prompts the throttle plate to open, engine speed increases. The IAC features a plunger mechanism that may be stuck/sticking.