over flow valve questions?
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The OFV only controls the amount of pressure in the pump by "popping off" or bleeding fuel off back to the tank to maintain a certain pressure in the pump. Just replacing a perfectly fine OFV with an adjustable one will not give you more power. If you think you are loosing pressure then get a gauge and monitor it. Your focus should be else where if you have a fuel pressure issue, like lift pump or filter. Usually if your OFV is on its way out your truck will start a little harder than normal. You can stretch the stock spring or add a spring out of a bic pen to stiffen it up.
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