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Power Strokes
6.4 Aftermarket
Bad Injectors/Clogged Nozzle/Cracked Piston?
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[QUOTE="Powerstroke Man 6.4, post: 1189362, member: 4573"] Whats the usual symptoms bad injectors/clogged nozzle/cracked piston? Spartan tunes (same level of injector noise on all tunes 40-310) 96,000 miles 4900 hours Truck has unusual loud injectors dump 2 bottles of power service in the tank doesn't seem to change a thing. changed the oil and fuel filters the other day (Motorcraft) with Mobil 1 TDT 5W40 (old filters came out clean) no change in idle quality and sound. Checked inside LPFP/upper housings its clean as can be no debris. Its on its 3rd MC FRP sensor 2nd complete fuel system truck has normal blowby no puffing. short term fuel trim? Warming Up 4,8 can go to 32+ Operating Temp 1,2,3 -0.3 - -0.5 idle 5,6,7 +0.5 - +0.7 idle 4,8 +21 - +28 idle Looks like to me 4,8 injector is compensating for something? 1500 RPM all injectors are 0.0 All Injectors KOEO -0.97 I also noticed a slight uneven idle and quiet idle tick developing for the past couple months. No thumping out the intake. No white/blue smoke. No codes. Thanks in advance. [/QUOTE]
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6.4 Aftermarket
Bad Injectors/Clogged Nozzle/Cracked Piston?
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