Fuel pressure check gauge tools

Asked by Shawn Nov 01, 2022 at 05:03 PM about the 1997 Chevrolet C/K 1500

Question type: Maintenance & Repair

Are there different fuel pressure
check gauge tools for fuel injected
versus carbureted engines?

3 Answers

306,635

Yes absolutely. There are low pressure testers and then there are high pressure testers. You can use a low pressure tester on a high pressure system as it will blow up, if you use a high pressure tester on a low pressure system it most likely won’t give you a reading. Plus there are some systems out there that you will need to make fittings for the tester to operate as the kit will not have the correct accessories.

201,085

There's such a difference between fuel pressure between carbureted engines and injected engines, that for accuracy, you should use different gauges to check pressure. Carburetors run about six psi, so a wide range will show about zero to ten. Injectors run about forty to sixty, so a gauge will show about zero to 100. A lot of people just get a zero to 100 gauge, but that's tough to read the low pressure for carburetors.

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