Hi,
I had a feeling that was the cause. There could be a few things that can cause it. A fuel leak, a leaking fuel injector, a faulty one way valve on the pump and so on.
When this happens, have you ever noticed black smoke from the exhaust? Does it ever run rough at first when it happens?
Let me know. If that isn't happening, then chances are the pump may be allowing fuel pressure to drop. Here is a link that shows how to check fuel pressure and drop off. I can help you through the test if you would like. As far as the pressure gauge that is needed for the test, I realize most people don't own one. However, often times a parts store will lend one to you for testing.
Let me know.
Take care,
Joe
Wednesday, July 29th, 2020 AT 8:21 PM