we have a gas engine jenbacher 1006kw.we face a black shutdown due to exhaust back pressure high.
Engine surge in a 2004 Kia Sedona is often caused by a clogged fuel filter or dirty injectors. When insufficient fuel reaches the engine, it will exhibit these symptoms.
A load on motor cutting high grass to short.
Mass Air Flow MAF sensor could be your, problem check that!
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probably the governor going bad
A governor causes an engine to surge by regulating the engine's speed through a feedback loop that adjusts fuel supply or throttle position. When the engine speed exceeds a preset limit, the governor restricts the fuel or air intake, causing a temporary drop in power. If the engine speed falls below the desired level, the governor allows more fuel or air, leading to a surge in power. This oscillation can result in a rhythmic increase and decrease in engine speed, known as surging.
Take a look at to oxygen sensor. A dead sensor can cause your engine to surge and miss. If you live in the north were the fuel is oxygenated it happens more often. Something about O2 sensors being killed by oxygenated fuel.
Check your vacuum lines this usually the cause for a surge in engine speed when idling or running.
The price of pineapples in Hawaii is less likely to cause an engine to hunt or surge.
The storms surge
#1 power surge
You probably have a dirty carburetor causing that surge.