Poss time to change mech fuel pump...
I tried doing numerous searches and general research but did not find any relevant hits. The mechanical fuel pump on my stock 396/325 *seems* to be on its way out. Two weekends ago I intended to take the car for a cruise. I started the car and noticed it was leaking fuel from what appeared to be behind the pump (think side closer to the firewall/passenger cabin).
I thought perhaps the diaphragm failed, the rubber hose leading to the pump failed, or that for some odd reason it was leaking out of a weep hole. But I didn't get under to investigate at the time, just shut it off and figured I'd look at it next weekend. Took the other classic car out for a ride/show instead. This past weekend, I went back to the Impala. Figured I would start it up, crawl under and see where the leak may be coming from.
Well, there were zero leaks. I could not replicate the problem no matter how many times I started and shut off the car. So now I don't know if this could be an intermittent leak, or if it maybe was somehow leaking out a weep hole(?) - though I do not know how it would have built up enough pressure to do that. The car ran perfectly fine the first weekend while leaking and it was not just drips but almost to a healthy stream that pooled up quickly under the car. Basically it ran no differently when it was leaking than the way it does now.
So if anyone has any experience and has seen an intermittent problem I'd love to hear about it but either way I have decided to replace the rubber gas hoses using teflon lined hoses and a new pump to be safe. But is there a consensus for what pumps are the best/most reliable?
I've been looking at Carter's mainly, but not really thrilled with what I am finding through places like Hubbards, Classic Industries, Impala Bobs, etc. I realize today's replacement parts will never rival the quality of yester-year's parts and standards, but I'd like to find the best one available. Anyone have any recommendations based on their own experiences for which brand to buy? This would be, again, for a stock 396/325 4BBL car so 6-7psi should be fine.