Spark plug gaps for 1989 F150

I really needs checking against the spark plugs you have chosen? .045" is about right for most.

1989-1996 Oldsmobile Cutlass Ciera 3.1L 3.3L V6 6 pc NGK ...

https://www.sixityauto.com > 6-pcs-ngk-v-power-spark...
This 6 pack NGK V-Power Spark Plug fits your 1996, 1995, 1994, 1993, 1992, ... 1989, Oldsmobile, Cutlass Ciera, 3.3L V6;Gap 0.060";Oe Equivalent Design ...

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  1987-1995 Oldsmobile Cutlass Ciera 2.8L 3.1L V6 6 pc Champion ...

  https://www.sixityauto.com > 6-pc-champion-copper-sp...
  6 pc Champion Copper Plus Spark Plugs for 1987-1995 Oldsmobile Cutlass Ciera 2.8L ... 1988, Oldsmobile, Cutlass Ciera, 2.8L V6;Plug Type Rs15Lyc; Gap 0.045"

What is the Spark plug gap on 95 olds cutlass Cierra? - Answers

https://www.answers.com > What_is_the_Spark_plug_g...
Aug. 4, 2007 - Standard gap is .060" or 1/16".Ask at auto parts counter when purchasing spark plugs. What is the 1972 olds cutlass 2 barrel spark plug gap ...

There is usually a tag under the hood on top of the fan cowling that shows some of the vacuum or emission line hookups. On that tag is often the sparkplug listing and the gap.

Spark Plug Gap NGK Spark Plugs Tech Video

55 thoundths

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?

spark plug gap is .035

Make: FORD
Model: F-250
Year: 1989
Engine: V8 - 5.8L - FI - - GAS

Needed GAP 0.44" Champion Catalog

More details for other engines sizes in Champion Spark Plug

Hope helped (remember rated this help) Good luck.

it should be .054 however You should always use the sticker under the hood of your vehicle. If for some reason your says .052-.056, then that is what you use. The stickers on the truck will have the most specific info for that truck of anything. I need the year to be more sure, also when you buy the plugs, the parts store can tell you the exact gap.

the plug gap is .044