Question about 1996 Ford F250 Crew Cab

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Ford F-250 5.8 converted to natural gas and then converted back.

My 1996 f-250 5.8 was converted to natural gas then converted back by previous owner. The engine light is on, garage said it was the TPS, I put a new one in, the light is still on. The natural gas module is still on the engine. The timing jumps back and forth over mark. I changed the timing chain, wires, plugs, rotor and cap. It is a 4x4, but the mileage sucks worse then I could have ever expected.

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wyatt1582
  • 453 Answers

SOURCE: I have a 1997 ford f-250 4x4 and its lousy on gas

You could fill the tires with Nitrogen but it will cost about $15 a tire. You will gain 1.5 - 2 miles more a gallon. Big trucks were made for pulling and hualing only. If your looking at gas mileage then you need a focus.

Posted on Jul 13, 2009

sparky1500
  • 1042 Answers

SOURCE: did tune up on my 91 ford f150 302 5.0L V8 4x4

did you properly "gap" the spark plugs? many spark plugs have to have the ends properly "gapped" before installation, by using a "gapping" tool/wheel to properly space the arc gap to the correct distance.

if the plugs were properly gapped, or already came pre-gapped out of the box for your specific vehicle, then you may have air getting into the cylinders around the spark plugs. were you careful to properly tighten the spark plugs straightly into place, or is there a chance that you left one loose, or, even worse, cross-threaded one of the spark plugs?

Posted on Mar 26, 2011

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