EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS)

Works great on my jeep tj. New fuel pump a few months back and the check valve went bad pretty fast. I chased a lot of issues( maintenance items that needed serviced anyways) but no more cold start issues. Fires right up. Will update in a month or so if it dies on me. But they’re cheap, and only take a few minutes to swap out

I installed the Evil Energy 3/8" inline fuel check valve along with their 300 PSI 3/8" fuel hose on my 1998 Jeep Grand Cherokee (5.2L) — and let me tell you, the difference was night and day. My Jeep already had a new fuel pump and strong pressure readings, but the pressure would drop quickly after shutdown, making cold starts a chore. After adding the check valve into the line, the fuel pressure now holds steady, and startups are instant — no more pumping the throttle or long cranks. It genuinely saved my carbureted-style motor’s life. The valve came as a pair, easy to install, and the directional arrow makes orientation simple. The hose is tough, cleanly built, and rated at 300 PSI, so you know it’s not cheap junk. Whether you're fighting bleed-off issues or just want to protect your fuel system, this is a cheap, high-quality fix. Can’t recommend it enough!

Nice quality stuff. Got for use in making custom oil catch can kits for a couple trucks.

This inline Fuel line Check Valve was fairly EZ to install. Seams to work well on my 455 Oldsmobile engine. Haven't had it on very long so don't know how well it will work on the long run. I would say try it for what they cost. I just got 2 more of these Fuel Line Check Values, I plan on butting one on another Olds engine, This time I am going to put it in the gas line between the fuel pump and the Carb. I feel that the one I put on the 455 Olds engine that I put inline before the fuel pump, doing this I feel the fuel drains back from the carb to the return line in the fuel pump when the car sits. I think by putting it between the fuel pump and carb that will stop the drain back.

I put one by the tank on my '72 CJ5. It held fuel for 24 hours but seemed to leak back after 48 hours. I just added the second one in the in the engine bay. I have an electric pump so running it with no fuel in the line would likely shorten its life span. The second will hopefully keep enough fuel by the pump to eliminate that risk. After adding the second valve in the engine bay my Jeep started with no problem after sitting for a few days and kept running without starving for fuel. It's got a 360 innit and just kept rumbling. Evil Energy offered my money back but since one wouldn't keep the line full, but for the price, having two valves in place I have no complaints whatsoever with this product. I highly recommend!

Work great, got what I ordered.

These have a very flimsy rubber diaphragm that will dislodge more than it'll stay in place and cause fuel flow problems because it rolls into the outlet nozzle and blocks fuel flow. Happened on 3 different ones in a 55psi fuel injection system gas line. Toss them. Not robust.

The item was precisely what I ordered.

Nice construction, used for pond water feature rather than fuel so s tad over engineered for the purpose but I like that. Good fit well made.

Recommend

put on my RV for the generator so gas isn't sucked back to main fuel tank making much easier to start without constantly priming.

sure was made from good material , but the flow not what you can expected.

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