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How do I replace an inline fuel filter?
A step by step is what I am looking for. I drive a 1992 chevy s10 blazer 4.3L. How to i relieve the fuel pressure? Do i do So by removing the fuel pump fuse? Or Is there a bleed valve of some sort? If so where are they located?? Thanks in advance.
(Your truck should have Throttle Body Injection, right? Has an old fashioned air cleaner like they used with carburetors, and when you take it off, the 2 injectors are visible right there)
Disconnect the negative battery cable.
Loosen fuel filler cap to relieve fuel tank pressure.
The internal constant bleed feature of the Model 220 TBI unit relieves fuel pump system pressure when the engine is turned OFF.
Allow the engine to set for 5-10 minutes; this will allow the orifice (in the fuel system) to bleed off the pressure.
(Yours should have hex-head fittings on each end of the filter, and each line connecting to it. If it has quick connect fittings, a special tool is needed. With hex-head type, most are 20mm on filter. It's important to use a wrench on the fuel line and the filter at the same time. Use a crescent wrench at least, if you don't have 20mm open-end or flare nut wrench.)
Using a backup wrench (on threaded fittings) to prevent over-torquing the lines or fittings, loosen and disconnect the fuel lines from the filter. Be sure to position a rag in order to catch any remaining fuel which may escape when the fittings are loosened.
Remove the fuel filter from the retainer or mounting bolt. For most filters which are retained by band clamps, loosen the fastener(s) and remove the filter. For some filters it may be necessary to completely remove the clamp and filter assembly.
To install:
Position the filter and retaining bracket with the directional arrow facing away from the fuel tank, towards to carburetor or throttle body.
The filter has an arrow (fuel flow direction) on the side of the case, be sure to install it correctly in the system, the with arrow facing away from the fuel tank.
Install and tighten the filter/bracket retainer(s), as applicable.
Connect the fuel lines to the filter and tighten using a backup wrench to prevent damage.
Connect the negative battery cable and tighten the fuel filler cap, then start the engine and check for leaks.
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