This article is a summary of a YouTube video "Taurus SHO Flex ECOBOOST 3.5 V6 BAD Engine Teardown! What Killed This Maintained Engine?" by I Do Cars

The Ecoboost Teardown: What Went Wrong?

TLDRThis teardown of a 3.5L Ecoboost engine reveals significant damage to the cams and cylinder head. The excessive use of RTV and worn-out components contribute to the engine's poor condition.

Key insights

🔍The engine suffered from excessive use of RTV, leading to difficulty in removing components.

🔧The cams and cam caps exhibit deep grooves and bearing material, indicating severe wear.

🔍The timing cover has an excessive amount of RTV, likely causing it to be difficult to remove.

🔧The water pump shows signs of coolant leakage through the weep hole, necessitating its replacement.

🔍The cylinder heads have visible damage, including rough surfaces and grooves.


What caused the damage to the cams and cam caps?

The cams and cam caps exhibit severe wear from extended use and lack of maintenance. The excessive grooves and bearing material are signs of prolonged damage.

Why was it difficult to remove components due to RTV?

Excessive use of RTV (gasket maker) during previous repairs caused components to stick together, making removal challenging and increasing the risk of damage.

What is the purpose of the weep hole in the water pump?

The weep hole allows coolant to escape if the water pump develops a leak, preventing coolant from entering the engine oil and causing damage.

What can be done to prevent this kind of damage in the future?

Regular maintenance, including proper gasket sealing techniques and timely replacement of worn-out components, can help prevent severe damage like the one observed in this teardown.

Can the engine be salvaged or repaired?

Depending on the extent of the damage, the engine may be salvageable through repairs and component replacements. However, the cost and feasibility of the repairs should be carefully evaluated.

Timestamped Summary

00:00Introduction and gratitude for the support of the presenter's wife.

02:26Explaining the purpose of the engine teardown and the need for specific engine parts.

09:51Initial inspection of the engine components, including spark plugs and coils.

23:20Disassembling the turbo and manifold for further examination.

31:30Inspecting the timing cover and its excessive use of RTV.

55:56Examining the condition of the cams, cam caps, and cylinder heads.

01:06:03Removing the cylinder heads and evaluating the condition of the cylinder walls and pistons.

01:17:22Assessing the overall damage and discussing future repair options.