Will My Brake Booster Cause My Car to Misfire?
If your car is having trouble accelerating or feels sluggish, you may have a misfiring problem. While this can be caused by the brake booster, that's not always the case. Make sure you know what causes a misfire, and under what conditions the brake booster can cause one.
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Misfiring Definition
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A misfire is when the fuel in a cylinder fails to explode for some reason. It can cause your car to stall or accelerate slower. You may be able to feel the misfire through the pedal when accelerating or hardly touching the pedal at high speeds. It feels like a slight jolt.
Brake Booster Causes
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The brake booster can cause a misfire, but this type of misfire only happens randomly. It might misfire today, but not tomorrow. According to AA1 Car, this is because a leak in the brake booster decreases the vacuum power and upsets the air/fuel mixture in your engine.
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Other "Random" Causes
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The brake booster isn't the only component that can cause random misfiring. For example, the fuel injectors may be dirty from fuel buildup. This keeps the injectors from inserting fuel into the cylinder correctly. Also, a weak fuel pump or plug in the fuel filter can also cause random misfiring.
Some "Normal" Causes
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A misfire is much more likely to be caused by worn out spark plugs, bad spark plug wires or a run-down distributor cap. All of these keep the correct amount of electricity from lighting the air/fuel mix in the cylinder. However, this is not a complete list of what can cause a "normal" misfire.
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References
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