SirRobyn0
Full Access Member
- Joined
- Dec 6, 2019
- Posts
- 6,755
- Reaction score
- 11,402
- Location
- In the woods in Western Washington
- First Name
- Rob
- Truck Year
- 1984
- Truck Model
- C20
- Engine Size
- 305
Yep and I've had a pressure regulator starve an engine.Same car same engine 2 different regulators I worked fine 1 starved the engine and in the end neither was needed.I 've had pumps with too little volume.Ive had pumps with too much volume which creates too much pressure, shortened the push rod too lower volume and thus lower pressure.Ive run return lines with a tee straight leg goes straight through to carb(path of least resistance)side leg is the return and use a restrictor in the return so carb is truly path of least resistance,in retrospect I think I could have used a fuel filter in the return line as my restrictor.I used brass stock drilling different size holes tell I had what I wanted in the return.The float bowl fills closes the needle, fuel goes out the tee back to the tank.Many ways to skin a cat.Id keep as many variables out of the equation.Start with a pump.Its cheap and easy.
I just want to comment mainly on adding return lines. There is both a 5/16, and 3/8 fuel filter made by wix that has a built in return line and some kind of limiting device built into the return side of the filter so that it works properly. I know this because we use to add return lines using these filters into vehicles at work, it was primarily on Dodge vans and motorhomes. Never had an issue with them and very much simplified the addition of an return line on a carbed vehicle. Personally I've never had a fuel pressure regulator starve an engine except in the case of a defective unit. I also would not and have never felt the need to shorten a push rod to lower fuel volume, seems like that could cause a difficult situation for someone down the road when the pump needs to be replaced again.