Fuel Pump Push Rod Bushing

[JSeery]

Originally Posted by Ross F-1

Exactly, not like the pushrod is tight in the bore.

I had a homemade plug in mine and drove it for 4 years with fine oil pressure. Pulled the manifold to do some work and found the plug laying in the lifter valley. I put it back in, started it, and it promptly blew right out again. So I'd been driving without it plugged for 4 years. I made a new plug out of a long bolt that bore against the underside of the block-off plate, can't blow out. And my oil pressure is essentially the same as it's always been; pushrod, no plug, or with the new plug.

Guess this answers two questions: 1. there is pressure loss or it wouldn't be blowing the plug out and 2. it doesn't seem to make enough difference to most people to worry about. I plugged mine and used a safety wire.