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Old 23rd May 2020, 09:13   #5
T-Cut
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Quote:
Originally Posted by ccogan View Post
Can the early metal canister petrol fuel filter be tested for flow and can the later fuel filter unit be changed as a direct replacement?
To answer your specific questions, the easiest way to check that the filter element is functioning is to measure the fuel delivery pressure at the test valve on the fuel rail. This can be done by rigging up a dial gauge connected to the Schrader valve. At a pinch, a mechanical tyre pressure gauge has been used. Clearly, this requires some safety preparation and caution. If ithe pressure is 50psi or more, the filter is fine. If the pressure is less than 50psi, the filter may be leaking or blocked, but both are extremely unlikely. It's more likely to be pump related. The earlier filter module can't be swapped with the later version.


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