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What sh0uld fuel press be 99 ford ranger 2.5 4 cyl ?

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A few models have a fuel pressure of around 70 psi or four and a half bar but the majority run lower, 3 to 4 bar.

Testing the fuel pressure is a small but important fuel system test which alone provides little information and is little help in diagnosing some running problems.

A fuel system test provides information about the fuel regulated pressure with the vacuum connected and again with the vacuum disconnected, the fuel delivery volume over a given time and proves the injectors aren't dribbling by holding pressure when the system is isolated.
A complete test also checks the pump peak pressure and the condition of the fuel pipes/hoses, sometimes destroying one in the process.

Posted on Apr 22, 2017

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45 minimum to 65 maximum depending on the injector system
most fuel injector systems operate around the 55 psi mark

Posted on Apr 22, 2017

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