Ford Edge 1

2.0L turbocharged four-cylinder with gasoline direct injection (GTDI). 240 hp, 270 lb-ft. Compact turbo alternative to the V6 in the Explorer V. Prone to coolant intrusion through head gasket failure — open-deck design weakness. Repair often requires a complete long block replacement.

• !! Coolant intrusion through head gasket failure from 80,000 km

  Design flaw: open deck coolant slots in the block give the head gasket insufficient sealing surface. Under boost and heat cycling, the gasket extrudes and coolant enters the combustion chamber. Fix usually requires long block replacement. Ford TSB 19-2172.

  Symptoms: Unexplained coolant loss, white exhaust smoke, rough running on cold start, DTCs P0300-P0304, P1299.
  5,000–8,000 $
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• !! Turbocharger failure from 100,000 km

  Turbocharger can fail from bearing oil leaks or wastegate malfunction. Loss of power and increased oil consumption. With complete failure, the engine is barely drivable.

  Symptoms: Whining noise on acceleration, power loss, blue exhaust smoke, boost pressure loss.
  1,200–2,500 $
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• !! Intake valve carbon buildup from 60,000 km

  Direct injection means no fuel wash over intake valves. Carbon deposits restrict airflow, causing power loss and rough running. Walnut blasting every 50,000-60,000 miles is the recommended prevention.

  Symptoms: Gradual power loss, rough idle, increased fuel consumption, occasional hesitation at low RPM.
  400–800 $
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3.5L Duratec V6 265 hp, the original Edge engine from 2007-2010. Reliable DOHC V6, but the internal chain-driven water pump is the Achilles heel. When the pump seal fails, coolant enters the crankcase and destroys the bearings within minutes. No external warning — the first sign is milky oil or sudden overheating. Proactive coolant flush every 50,000 km buys time. Timing chain stretches at very high mileage. Overall a solid engine if the water pump is addressed preventively around 150,000 km.

• !! Internal water pump failure — coolant in oil from 180,000 km

  The water pump sits inside the engine behind the timing cover, driven by the primary chain. When the seal fails, coolant dumps directly into the crankcase. Oil film collapses under load and rod/main bearings wipe in minutes at highway speed. Ford claims it is a maintenance part with 100,000-150,000 mile service interval, but many engines fail before that. Repair requires 10-12 hours labor.

  Symptoms: Unexplained coolant loss with no visible external leak, milky residue under oil cap, rising oil level on dipstick, engine overheating with no warning.
  1,700–3,500 $
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• !! Timing chain stretch and guide wear from 180,000 km

  The timing chain on the 3.5L Duratec stretches at high mileage, causing cam timing codes P0016/P0017. Plastic chain guides fatigue under phaser load. If ignored, the chain can skip a tooth and cause valve-piston contact. Usually addressed together with the water pump since both require timing cover removal.

  Symptoms: Brief rattle on cold start lasting 1-3 seconds, rough idle, check engine light with cam/crank correlation codes, power loss at mid-range RPM.
  1,000–2,500 $
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• ! Ignition coil failure from 130,000 km

  Ignition coils fail individually on the 3.5L V6, causing misfires. Worn spark plugs accelerate coil failure — Ford recommends plug replacement at 100,000 miles, but many owners push beyond that. Replacing coils as a set prevents repeat visits.

  Symptoms: Misfire under load, check engine light with P030x codes, rough idle, slight hesitation on acceleration.
  150–400 $
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3.5L naturally aspirated V6 with twin independent variable cam timing (Ti-VCT). 290 hp, 255 lb-ft. The most common Explorer V engine. Achilles heel: the internally mounted water pump that leaks coolant into the engine oil when the seal fails — total engine destruction follows. Exhaust manifold cracks around 60,000 miles. Fundamentally strong and durable engine when the water pump is replaced proactively.

• !! Internal water pump leak — coolant in oil from 130,000 km

  The water pump sits behind the timing cover and is driven by the primary chain. When the seal fails, coolant enters the crankcase directly — bearing damage and total engine failure follow. Repair requires 10-15 hours of labor at $2,000-$3,500.

  Symptoms: Unexplained coolant loss with no visible leak, milky oil on the dipstick, faint chain rattle on cold start, low oil pressure warning.
  2,000–3,500 $
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• !! Cam phaser wear and rattle from 120,000 km

  Variable valve timing phasers wear out and produce a rattle on cold startup that worsens over time. P0016/P0017 codes. Chain guides and tensioners age in the same oil circuit as the water pump.

  Symptoms: Rattling or knocking noise on cold start (sounds like a diesel at idle), noise fades after warmup. Rough running, check engine light.
  2,500–4,000 $
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• !! Exhaust manifold cracks from 100,000 km

  The 3.5L V6 exhaust manifolds develop cracks from thermal cycling. Exhaust gases enter the engine bay and potentially the passenger cabin. NHTSA investigated 1.3 million Explorers for cabin CO intrusion linked to cracked manifolds.

  Symptoms: Ticking noise on cold start that fades when warm, exhaust smell inside the cabin especially under hard acceleration, elevated CO readings.
  1,000–2,200 $
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3.7L V6 naturally aspirated 3726cc. Duratec 37. Base engine Mustang VI 2015-2017. Delivered to Europe/Germany in small numbers only. Discontinued 2017.

• !! Cam Phaser Rattle from 80,000 km

  The 3.7L Duratec V6 (Mustang S197 V6, Kuga) shows rattle from hydraulic cam phasers at low oil pressure, like the Mustang V6 S197. Oil changes every 8,000 km are mandatory.

  Symptoms: Rattle on cold start from the timing drive, sounds like a loose timing chain
  800–2,500 $
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• !! Water Pump Shaft Seal Failure from 100,000 km

  The external water pump on the 3.7L Duratec V6 is prone to shaft seal leaks at mileages over 100,000 km. Coolant loss and overheating damage result.

  Symptoms: Coolant leak from the side under the engine, engine temperature rising, warning light
  400–900 $
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• !! Internal Chain-Driven Water Pump Failure from 130,000 km

  On the transversely mounted 3.7 V6 the timing chain drives the internal water pump. If the pump fails, coolant enters the crankcase directly — high risk of engine destruction if not stopped immediately.

  Symptoms: Coolant loss without external leak, oil discoloured milky, temperature gauge rising.
  800–2,500 $
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+ 3 more engine weaknesses + vehicle weaknesses