Is this a realistic number? It said on the retail sticker 100,000 mile tune up interval. On my 88 F150 I would change the plugs every 25,000. Is there something special with these triton engines to make the long intervals possible.

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99 F150 XLT Supercab Towing Package 5.4L Auto Two Tone Med Toreador Red/ Silver Power windows, locks, mirrors, driver's seat. Cruise, tilt wheel Alloys, Michelins, ARE topper Superchip / 2000 Chevy Silverado Ext cab 5.3, auto, Tow package, tilt, cruise, power windows,locks,side mirrors, alloy wheels.

 

Yes- the sparkplugs are a PITA to change.

Seriously, check the plugs regularly and change them when they need it.

 

Yea I would do it by 50K. They might be having a problem you would want to know about. And once you get em out then you ask yourself "why not just put new ones in for 60 or so bucks?" so....well.. after you see how tough it is getting the boots out, clean the holes out and pull the plugs you will not want to go in there again for a long while. So you usually just put new ones in.

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97 F-150 SC Lariat, Styleside, White over Gold, 4.6L (Windsor), Automatic, 3.55 rear end, electronic 4X4, w/ every option of Lariat and ORP packages except the 17" wheels (I even got the OR decals now!) MOD's so far: K&N air box mod, Gibson Super Truck, clear Bugflector II, Leer TSC 600 hard cover, Bridgestone Dueler OWL ATP 265/75 R-16's, TrailMaster Invader N7 shocks, Smittybilt step bars, Ford moulded mud guards, "White-white" head lamps, Cloud Rider Design's SS Grill and bumper opening, Bosch Platinum + 4's, Hayden 30K+ Tranny Cooler,Class III Reece load distributing hitch system, full wiring including trailer battery charging system, Escort Sensor II Brake controller, Superchip

 

Under certain conditions..sure, 100,000 miles could be possible. I am not going to wait that long. like cphilip...50K sounds good to me for new plugs! The Triton engines use Platinum plugs..which do last much longer than regular plugs.

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2000 F-150 XLT, 4x2, 5.4L Supercab, Styleside, Black with silver two-tone, 3.55, class III towing package with heavy duty cooling package, 4 wheel disk ABS, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, Pendaliner bedliner, K&N air filter, rubberized undercoating, cabin filtration system, Bugflector II, 5W-30 Mobil 1, engine build 10/4/99

 

50,000 sounds reasonable. It must be awful being a Triton tune up guy.

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99 F150 XLT Supercab Towing Package 5.4L Auto Two Tone Med Toreador Red/ Silver Power windows, locks, mirrors, driver's seat. Cruise, tilt wheel Alloys, Michelins, ARE topper Superchip / 2000 Chevy Silverado Ext cab 5.3, auto, Tow package, tilt, cruise, power windows,locks,side mirrors, alloy wheels.

 

Don't wait until 100k! My truck started running bad about a month ago w/ 70000 on- plug looked horrible- I agree with these fella's 50,000 sounds about right.

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'97 Ford SC 4X4 XLT Off Road pkg., 4.6,A/OD, 3:55, premium sound w/CD chg, Black clct,towing pkg., hvy duty elec. pkg., Bridestone dueler AT's, line X, Flowmaster true duals, chip, K&N air filter, smittybilt stainless nerf bars

 

When I sold my 97 in Sept it had 80K on it with no spark plug change. Stll ran great, started great, and mileage was at 17-18 mpg highway.

As always ymmv.......


-jeff b.