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South San Francisco, CA
with a noid light check. cyls 1,2,3 all flash with eng cranking = normal oper. at cyl 4 the problem cly , the noid lights stays on and does not flash . checked the connector and wires to fuel injector at cyl 4 = ok . it it ther pcm that is the cause for the incorrect injector pulse at cyl 4?
already replaced fuel injector and fuel pressure regulator , timing belt new, plugs ,wires and cap new .compression good approx 170-180 at all 4 cyls