Quote Originally Posted by Zkdk3000 View Post
Sure. From the tank runs a fuel line to the low pressure pump. From the low pressure pump runs a hard line to high pressure pump. Fuel filter threads on to bottom of fuel pump. High pressure outlet to throttle body. Return line to tank. From what I've read the low pressure pump just puts out enough psi to feed the HP pump. Around 3/4 psi. I believe they do run at the same time. Engine Nut says both pumps run off the same fuse and same relay. As I said before I can only run one pump at a time without blowing that fuse. Ordered the low pressure pump in case that's the prob. Both do run though when separately tested.
Here's a picture for reference.

ehy

Zk
Well if it was me , I would ohm the pump motors out to see what they read and then find why the circuit is feeding so many amps . Let me know because it's almost either there is blockage or the relay is not shutting off when it's satisfied for start up . Idk I see why they use the low press pump it's just a little feeder from the tank . But to blow a fuse while both are on , high Amps or blockage or little of both maybe . With out a meter or some ohms readings idk . Let me know what you find !


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