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Chainsaw has fuel, spark and compression but wont start

Chainsaw has fuel, spark and compression but wont start
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  • Vovich Mechanicovich
  1. What has spark and fuel but no start?
  2. How do you know if your ignition coil is bad?
  3. How do you start a stubborn chainsaw?
  4. Why am I not getting any spark?
  5. How do I fix no spark?
  6. Is it OK to drive with a bad ignition coil?
  7. What happens when an ignition coil goes bad?
  8. Can you run a chainsaw without a primer bulb?
  9. How many pulls should it take to start a chainsaw?
  10. How long does it take for a chainsaw to Unflood?

What has spark and fuel but no start?

Answer: The most common source of trouble when the engine cranks but won't start is the ignition or fuel system. Make sure you got enough fuel pressure and good spark. Also, a faulty sensor (crankshaft position sensor or camshaft sensor on some models or throttle position sensor) may cause this problem as well.

How do you know if your ignition coil is bad?

If you see any bright blue sparks jumping inside the spark plug gap when you try cranking the engine of your chainsaw it means that the coil of your chainsaw is working properly.
...
There are three possible reasons for an orange spark:

  1. faulty connection,
  2. weak current,
  3. cracked coil casing.

How do you start a stubborn chainsaw?

Try to start the chainsaw after priming the carburetor. 5. Activate the choke by moving the lever to the full choke position and pull the starter rope 3 or 4 times to start the engine. If that doesn't work, move the choke lever to half choke and pull the starter rope, 6 times maximum, to start the engine.

Why am I not getting any spark?

Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.

How do I fix no spark?

If the engine has a coil-on-plug ignition system with no plug wires:

  1. Remove one of the coils from the spark plug.
  2. Use an extra spark plug.
  3. A spark plug tester.
  4. Or even a screwdriver in the end of the coil.
  5. Ground it on a piece of metal on the engine.
  6. Finally, Have someone crank the engine and watch for a spark.

Is it OK to drive with a bad ignition coil?

It is possible to drive with a faulty Coil On Plug (COP), but not advisable. Driving with a faulty waste spark ignition system won't be possible. Driving with a faulty coil pack can damage other components of the engine.

What happens when an ignition coil goes bad?

One of the most common symptoms associated with a faulty ignition coil is engine performance issues. ... Faulty coils may cause the vehicle to experience misfires, a rough idle, a loss in power and acceleration, and a reduction in gas mileage. In some cases the performance issues may even result in the vehicle stalling.

Can you run a chainsaw without a primer bulb?

No, it won't work depending on the engine design. Without going into details the primer bulb forces fuel to the carb jets and not the engine directly. It also forces pressure and vacuum. Without the bulb your carb will be flooded on a permanent basis.

How many pulls should it take to start a chainsaw?

At this point: Place the choke in the "off" position. With the choke in the "off" position, pull the engine's crank cord through again. The engine should start in 1 to 3 pulls. Try it first without using the throttle control—unless recommended by the manufacturer.

How long does it take for a chainsaw to Unflood?

The first is the easiest and most common method. Let your chainsaw sit for 15-20 minutes to allow the fuel to evaporate from the engine and then repeat the starting instructions.

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