It is important to understand both of them and what causes them, as well as what you can do to fix the problem.
This is not really a problem, and normally happens after use in a high performance engine. An afterfire is when the engine makes loud bangs after you have already turned off the engine. Similar to this, but an important distinction is that there is also something called an afterfire. This can cause problems in both small engines and pressure washers alike. The intake valve is open and fuel is burned and shot back out the intake. This happens while the engine is still running. Backfire vs Afterfireīackfire is defined as “ undergoing a mistimed explosion in the cylinder or exhaust” source. There are a couple of reasons that such after fires and backfires could be happening, and so it is important to understand why they are happening and what you can do to fix the situation. This can be remedied by decreasing the throttle speed slowly. That is an afterfire.Ī pressure washer backfires if the speed of the engine is decreased too quickly, if the engine is running too hot, or if there is left over fuel in the line which will be burned, resulting in a loud sound. Or lets say you just finish power washing, and right after you turn it off the engine makes those same noises a couple of times before shutting down. It sounds like a gun, but it definitely came from the pressure washer. You are going about pressure washing when all the sudden a loud bang echoes through the air.
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