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Can dirty high-pressure pump filter be why engine is surging over 3,000 rpm or injector
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Yes, 100% a dirty high-pressure pump filter could cause you all kinds of running issues
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especially over 3,000 rpm because you're losing fuel. So anytime you are losing wide open throttle
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or you're not getting over say 3,000 rpm, depending on your engine model, then you could
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be in an rpm reduction. If you have no codes, no alarms, you're just putting the handle down and
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it's only going to 3,000 rpm, most of the time that is going to be a fuel-related issue and it's
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going to be a volume issue. I'm sure if the engine is surging, it's going to be bogging down, it's
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going to be surging, it's going to be shaking violently. Most likely you're not getting the
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volume of fuel, which means your high-pressure pump, there's a screen on the bottom of it
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If that screen is completely dirty, if your VST or your FSM is full of fuel, it could be an
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electrical issue, but check your fuel first. I would look at the fuel system before I even start
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going and looking at anything electrical
