Spark Plugs

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Jan 29, 2005 | 01:41 AM

l.stull

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Joined: Sep 2004

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Spark Plugs

Just Kinda Wondering If Anyone Has Done This . My Bro In Law Has A 97 F150 5.4 With 140 K Miles And No Tune Up. He And I Wonder If Anyone Else Has Done This? Truck Still Runs Great. Cant Beat A Ford Can U. Only Oil Changes With Mobil 1. No Spark Plugs In All These Miles. Seems Incredible???

Jan 29, 2005 | 04:31 PM

triton_2002

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Joined: Aug 2003

Posts: 2,977

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From: South Texas

Yea, I think its time for new plugs and wires. Stick to the motorcraft replacement plugs, they seem to work best on these engines. Change the fuel filter too if you haven't already.

Jan 29, 2005 | 05:45 PM

superrangerman2002

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Joined: Jul 2002

Posts: 4,821

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From: South Dakota

No offense meant here, but I'd say that's a recipe for stripped threads in the head, especially when the '97s have fewer spark plug threads than the newer mod motors.