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How do I troubleshoot an old two-cycle engine that stalls after idling for 20 seconds?

How do I troubleshoot an old two-cycle engine that stalls after idling for 20 seconds?
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  • Edward King
  1. What could cause rough idling and stalling?
  2. What would cause my car to stall while idling?
  3. Can bad PCV valve cause stalling?
  4. Why does my car stall when I push the gas pedal?
  5. What causes RPM to fluctuate while idling?
  6. Can a bad fuel pump cause a rough idle?
  7. Can spark plugs cause stalling?
  8. What does stalled vehicle mean?
  9. What are symptoms of a bad PCV valve?
  10. Can a bad PCV valve cause excessive oil consumption?

What could cause rough idling and stalling?

Causes of a rough idle. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues. Let's go over each of these causes in more detail and learn how they can be remedied.

What would cause my car to stall while idling?

Car engines quit because of a variety if issues around air flow, fuel or mechanics. Some common reasons for motor vehicle stalls include: ... A fuel mixture that isn't rich enough (this is usually the cause of cold stalling and intermittent stalling) A faulty fuel pump, alternator or EGR valve.

Can bad PCV valve cause stalling?

As the PCV valve starts going bad, the performance of your vehicle will get worse. This can be exhibited by a buildup of pressure in the exhaust or the engine could stall out. ... When this happens, the fuel and air mixture is diluted causing your vehicle to run poorly and lean out.

Why does my car stall when I push the gas pedal?

The car will stall if the valve is too clogged or when it finally fails. If, while holding the accelerator pedal down, a small amount of pressure keeps the car running at a stop, the idle control valve may require attention. In most late model cars, this problem will usually trigger the Check Engine light.

What causes RPM to fluctuate while idling?

Why does my engine's RPM seem to fluctuate (runs rough)?

Engine hunting and surging at idle is usually caused by a fuel delivery, air leak, or governor system problem. Cleaning/overhauling the carburettor, adjustment of the governor, and/or changing the air filer may be required.

Can a bad fuel pump cause a rough idle?

What to Look For: A bad fuel pump can cause difficulty when starting the vehicle, a rough idle, and stalling. Clogged Fuel Filter – The fuel filter filters the contaminants from gasoline. Over time it can become clogged, which slows the flow of fuel. In turn, the engine doesn't receive enough fuel.

Can spark plugs cause stalling?

Faulty spark plugs can cause the car to exhibit starting troubles. Worn out plugs does not produce sufficient sparks, which is needed for starting the engine. This results in the engine to stall and fail to start quickly.

What does stalled vehicle mean?

A stall is the slowing or stopping of a process and in the case of an engine refers to a sudden stopping of the engine turning, usually brought about accidentally. ... Stalling also happens when the driver forgets to depress the clutch and/or change to neutral while coming to a stop.

What are symptoms of a bad PCV valve?

Symptoms of a Bad or Failing PCV Valve Hose

Can a bad PCV valve cause excessive oil consumption?

A clogged hose or PCV system or inoperative valve can increase oil consumption because pressure builds when the vapors in the crankcase aren't allowed to flow into the combustion chambers. That additional pressure can force oil past seals and gaskets.

Fuel consumption
Fuel consumption is the inverse of fuel economy. It is the amount of fuel consumed in driving a given distance. It is measured in the United States in...
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