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They have an internal diaphragm that can rupture when it gets old.

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13y ago

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Will fuel pump break after overheating?

You haven't specified whether it is in-tank or mechanical. A mechanical fuel pump will very often fail after the engine overheat. Likewise, an electrical fuel pump will fail from contaminants or other causes of overheat to the pump itself. So, in short, yes!


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If you are running the fuel injection....absolutely not. No mechanical pump will provide the fuel pressure needed to run it. I don't even know if the 93 still has the mechanical fuel pump mount. Even if it did, the camshaft wouldn't have the fuel pump eccentric to run the pump.


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