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98 mercury mystique that when started goes above 2000 rpm fine then drops off and dies Have replaced the MAF sensor no luck?
Wiki User
∙ 16y ago
Connect a fuel pressure gauge to the injector fuel rail. Watch the fuel pressure when you start it. If the pressure drops off as the engine starts running bad, it's probably either the fuel pump or fuel filter.
Wiki User
∙ 16y ago
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