Re: Humming Noise

Posted by Owen_Dyneto On 2013/2/11 18:27:54

As to the fuel pump, I'd install the correct mechanical fuel pump and discard the electric pump, or get a new electric back at the tank as an emergency pusher if your car is prone to vapor lock or you live in a very hot climate. But I'd rely on the original mechanical pump under normal circumstances.

As to hard hot starting, it's possible that your starter motor needs service, but more likely if your problem is that the engine has a problem cranking smoothly when hot, you should check your ignition timing, a balky starter motor on a hot engine is a classic symptom of excesively advanced ignition timing.