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Hello everyone,
I recently joined the Bronco club and picked myself up an '88. Trying to get it to start but there's a fuel delivery problem. I've already replaced the in-tank fuel pump, relay, and TFI. Fuse is good and the ECM has good ground and supposedly the last owner replaced the Fuel Pressure Regulator and high pressure external pump within the last few years. I did some quick checks on the filters and now I'm replacing a couple of fuel lines; soon I'll be ready to test it.
But these fuel pressure test kits are causing an unexpected hiccup. So far I've bought two and had to return them both as neither the stand alone adapters nor the built-in ones that come attached to the lines fit onto my schrader valve. I've also removed the schrader valve itself and attempted to use the adapters to fit into the schrader valve opening and still no luck (despite the threads looking identical). I really don't want to strip the inside threading of the schrader valve opening so I'm being extra careful with that approach. Any help on a compatible kit or adapter would be much appreciated
Use a Snap-On gauge
They have a long pin that runs through the adapter to push down the schrader valve
NOT understanding why you cannot get it to work with no schrader valve installed
That works too for me but I have been doing fuel injection pressure tests since 1976
Here is what my snap on looks like, taped to the windshield of a Heritage
Use a Snap-On gauge
They have a long pin that runs through the adapter to push down the schrader valve
NOT understanding why you cannot get it to work with no schrader valve installed
That works too for me but I have been doing fuel injection pressure tests since 1976
Here is what my snap on looks like, taped to the windshield of a Heritage
I’m not that rich so I bought this gauge
a few years ago. It has two gauges to test carb and EFI, a bag of adapters and a hose with the correct end for a Ford schrader valve. I also don’t know why you can’t get anything to work.
That must be hard to read the needle with tape covering the face of the gauge.
"I've also removed the schrader valve itself and attempted to use the adapters to fit into the schrader valve opening and still no luck (despite the threads looking identical). I really don't want to strip the inside threading of the schrader valve opening so I'm being extra careful with that approach. Any help on a compatible kit or adapter would be much appreciated"
Why dont you just screw the valve core out with tool, and hook gauge back up, to shrader valve,
TOOL below
Last edited by torq'ta 5 8; Apr 2, 2026 at 05:24 AM.
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1988 Bronco II: Fuel Pump Pressure Test Kit
