Known problems · Ford F-150
Two-piece spark plugs
11th (2004-2008 redesigned, not Heritage) · 5.4 3V Triton, 4.6 3V Triton
How you’d notice
Misfire; expensive tune-up; shop says a plug broke in the head. Two-piece plugs on 2004-2008 3V snap off in the head — not the 1997-2003 blow-out problem.
Typical shop cost
$400–$2,000 CAD
A lift, not a driveway glance. You pay the shop. First appointment of the morning so the engine is cold.
Looking at a listing for this truck?
Paste the ad. We’ll put this problem against the photos, the asking price, BC tax, and shops we’ve confirmed. Homework, not an inspection.
More on this generation
- Cam phasers / timing chains$2,500–$5,000 CAD
- Exhaust manifold bolts$800–$2,000 CAD
- Automatic transmission 4R75E$3,000–$5,500 CAD
- IWE / 4x4 vacuum hubs$150–$1,200 CAD
- Power window regulators$250–$450 CAD
- HVAC blend door$400–$1,200 CAD
- Fuel pump / module on frame$600–$1,200 CAD
- Front end (ball joints, tie rods)$400–$1,500 CAD
- Rear axle / pinion seal$300–$1,800 CAD
- Frame / cab mount rustOften not worth repairing
- A/C evaporator$1,200–$2,000 CAD