Re: Hard starting when hot

Posted by JWL On 2011/10/11 10:52:20

Andrew, I notice from the photo you posted that your engine is missing the fuel pump heat shield. I recommend you get one installed. I believe the practice of installing electric fuel pumps close to the tank is to have the fuel line pressurized, thereby helping to mitigate the effects of vapor locking. I agree with the suggestion to install an On-Off switch for the electric pump. After you correct these items and you are still having vapor lock problems, you might consider adding a gallon of diesel fuel to a tank of gas. You say the Super grade you buy does not contain ethanol? Which brand do you use? Good luck, vapor lock is a nasty thing to deal with and takes away the pleasure of driving our wonderful Packards.