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Mazda 6 V6 auto rough misfiring - fuel flow problem?

Mazda 6 V6 auto rough misfiring - fuel flow problem?
  • 903
  • Eric Burns
  1. Why is my car misfiring when I accelerate?
  2. What causes a misfire at low rpm?
  3. What causes engine misfire at idle?
  4. Will injector cleaner fix a misfire?
  5. Can a misfire fix itself?
  6. How long can you drive on a misfire?
  7. Why does my car shake at low RPMs?
  8. Can a rich condition cause a misfire?
  9. Why does my car vibrate when idle?
  10. Why does my car shake on idle?
  11. Will changing spark plugs fix a misfire?

Why is my car misfiring when I accelerate?

The most common cause of an engine misfire when accelerating is worn-out spark plugs. When spark plugs are suffering from excessive wear, they don't ignite the fuel in the piston cylinder when they are supposed to. This can also be caused by fouled spark plugs, a cracked distributor cap, or bad spark plug wires.

What causes a misfire at low rpm?

Many system malfunctions can cause misfires or rough idling. Ignition system components, including spark plugs, plug wires, ignition coils and ignition timing are culprits as are lean air/fuel mixtures and mechanical issues within the engine.

What causes engine misfire at idle?

A dirty or damaged spark plug fails to create a spark. Likewise, bad wiring and crack distributor caps can prevent spark plugs from operating correctly. Engine misfires may also stem from an incorrect air-to-fuel ratio. If the mixture contains too much air and too little fuel, it may fail to combust.

Will injector cleaner fix a misfire?

Will injector cleaner fix a misfire? If your engine misfires due to unbalanced air to fuel ratio because of clogged fuel injectors, then yes, injector cleaner could clean the clogged fuel injectors and restore the air to fuel ratio.

Can a misfire fix itself?

It can go away permanently if it was bad gas. Otherwise, it is likely to return. Yes an "italian tune-up" can sometimes clear a misfire condition.

How long can you drive on a misfire?

Most cars can run up to 50,000 miles with a misfiring cylinder, and for that, your car should be literally designed to use tough cantankerous, easily replaced air-cooled four-cylinder engines.

Why does my car shake at low RPMs?

Shaking or vibration may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal idling RPM which may also cause the motor to shake or vibrate more than normal.

Can a rich condition cause a misfire?

The peak firing voltage for a misfiring cylinder with a shorted plug or plug wire will be lower than the others. But don't forget that low compression and an overly rich fuel condition can also cause the same kind of readings.

Why does my car vibrate when idle?

Motor mounts: It's the job of the motor and transmission mounts to dampen vibration. When they break, you'll feel excessive vibration, especially at idle. You can diagnose this yourself by putting your car in neutral. If the shaking lessens, you very well could have broken mounts.

Why does my car shake on idle?

Worn out spark plugs are one of the most common causes of engine shaking. If your spark plugs are dirty or worn out they will be unable to fire properly and create the spark your engine needs to ignite the fuel. This causes your engine to misfire. Replacing your spark plugs is typically inexpensive.

Will changing spark plugs fix a misfire?

The damage you see will help you determine the cause of the misfire. If the spark plug is just old, replacing it may solve the problem. Make sure to replace and properly gap new spark plugs. A spark plug that looks black or carbon fouled at the end means the engine was running rich (too much fuel).

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