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Old July 29th, 2011, 06:36 PM
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Default Need help with intermittent engine sputter and loss of power

My 1986 fuel-injected 5.0 V8 with dual fuel tanks has been running roung/sputtering/and lacking any power to go above 20mph. I've tried replacing the fuel filter several times and currently have the gas tank off thinking that it might have rust or gunk that is fouling the lines. However the tank inside is super clean.
After replacing the fuel filter it has run well (2 hr trip), but then the sputtering starts again for no apparent reason the next day. This has happened twice. The sputtering action happens when you press the accelerator, the truck jerks and serges and won't go over 20. Any thoughts or suggestions? Pulling the fuel tank was my last resort for a fix and that doesn't seem to be the issue after inspecting it.
Thanks!