Coolant disappearing with no leak, white smoke on startup, and a misfire that won't quit?

Ford 2.0 EcoBoost Coolant Intrusion Repair
what it is, what it costs.

2015–2020 Ford 2.0L EcoBoost F-150, Edge, Lincoln MKC 🔴 Shop job, needs a hoist, a press or a machine shop

Shops quote $6,500–$10,000 for this one, and the quote usually isn't the ripoff, the job really is that big. Here's what's actually failing, what the correct repair involves, and the honest part: this is not a job I do in a driveway.

Get a Second Opinion, $100–$250 flat The jobs I turn down

What's actually failing.

The 2.0 EcoBoost uses an open-deck aluminum block, the cylinder walls stand free at the top rather than being tied into the deck. It saves weight and helps cooling, but under years of boost and heat cycling, the deck area can crack or the head gasket can let go between a coolant passage and a cylinder. Either way, coolant gets pulled into the combustion chamber. Ford has a TSB on the condition, and the factory fix isn't a gasket, it's a replacement short block, because a cracked deck can't be reliably sealed.

The symptoms are textbook coolant intrusion: the reservoir drops with no puddle anywhere, white sweet-smelling smoke on cold start as the coolant that seeped in overnight burns off, and misfires on the affected cylinder, usually P0301 or P0302. A combustion-gas test on the cooling system or a borescope look at the cylinder (steam-cleaned pistons are the giveaway) confirms it.

Diagnosis matters enormously here, because the repair path splits: a true head gasket failure on an intact deck is one job; a cracked block is a short block replacement. We pressure-test, gas-test and borescope before recommending anything, you should never pay for a short block on a guess, and never pay for a head gasket that's doomed to fail again on a cracked deck.

The symptoms.

If your Ford is doing any of these, this is the likely cause:

  • Coolant level dropping steadily with no visible leak
  • White smoke from the exhaust, especially on cold start
  • Sweet smell from the exhaust
  • Misfire codes P0301 or P0302, often worse cold
  • Rough idle for the first minute of the day
  • Overheating under load or in summer traffic
  • Repeated low-coolant warnings after topping up

Not certain that's what you're dealing with? Match the symptom in plain English first:

Or describe it to the AI mechanic, it'll tell you the likely cause for your exact Ford in seconds, free.

What this job typically costs.

$6,500–$10,000
what dealers typically quote for this repair
That number is usually honest, not a scam, this is a genuinely big repair. What's worth $100–$250 flat is confirming it's the right repair before you pay for it.

See how that range compares across Mississauga, Oakville, Milton, Brampton and Etobicoke in the GTA Repair Price Index, honest shop & dealer ranges for the jobs people actually get done.

The honest answer first

I won't pretend I do this one in a driveway.

Coolant Intrusion Repair. Head Gasket / Short Block Replacement is on my published list of jobs I turn down. It needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. That list is public on my trust page. I'd rather lose the job than learn it on your engine, and you should be suspicious of anyone who says yes to this over the phone.

So here's what I can genuinely do for you, holding a $6,500–$10,000 quote. Both are real, both are flat-priced, and both are worth more than a bad yes.

Option 1

Second opinion, at your car

$100–$250 flat at your location

Before you spend $6,500–$10,000, have someone independent confirm that's actually what's wrong. This is a diagnosis, not the repair, no hoist, no lift, nothing comes apart. I scan it, test it, look at it with you, and tell you straight whether their diagnosis holds up. If it does, I say so and you go pay them with confidence.

Book the second opinion →
Option 2

Buying something else instead?

$149–$399 flat pre-purchase inspection

At $6,500–$10,000 on a car that might be worth not much more, plenty of people replace instead of repair, that's a completely reasonable call. If that's where you're heading, get the next car measured before you hand over money: 150 published points, at the seller's location, written report the same day.

Book a pre-purchase inspection →

Book the second opinion

Tell me what you've been quoted and what the car is doing. $100–$250 flat, at your location, and you get a straight answer either way.

A straight answer, not a sales call, including "their quote is fair, go pay it". Or call/text 647-450-0406.

Rather just have the quote read? The free quote check tells you whether the number is in line, no visit needed.

Jobs on this car that ARE mine:

What the correct repair involves.

Not so you can do it yourself, so you can tell whether the shop quoting you understands the job:

  • Full diagnostic confirmation first, cooling system pressure test, combustion gas test, borescope
  • Complete repair per findings: head gasket with machined-checked head, or short block replacement
  • New head bolts, gaskets and seals throughout, no reused single-use hardware
  • Timing components and water pump addressed while the engine is apart
  • Complete cooling system flush, correct coolant, fresh oil and filter
  • Compression and leak-down verification plus extended road test before handover

That's the job. It's why this one belongs on a hoist instead of in a driveway, and it's why $6,500–$10,000 usually isn't a ripoff, it's a big repair honestly priced. What's worth checking is whether that's really what your car needs.

Get the diagnosis confirmed first

What it takes to do this one properly.

Plain version: Coolant Intrusion Repair. Head Gasket / Short Block Replacement needs equipment a driveway doesn't have, a hoist to get under it properly, a press or a machine shop for the parts that come out, and a controlled space for an engine or gearbox that's in pieces for days. I work out of driveways with hand tools. That's not false modesty, it's the published limit of what I take on, and it's listed on my trust page alongside the warranty.

What that means for you: this page is here to tell you what's failing and what it should cost, so you walk into a shop knowing the job instead of nodding at a number. And if you want that number checked before you pay it, that part I can do, $100–$250 flat, at your location.

Why not to wait.

Coolant in a cylinder washes the oil film off the cylinder wall, hydro-locks the engine in extreme cases, and steam-cleans the piston while contaminating the oil. Every week of driving on intrusion grinds the bore and bearings. Caught early, the rest of the engine is salvageable. Driven for months, a repairable engine becomes a dead one.

Frequently asked questions.

How do you know if it's the head gasket or a cracked block?

Testing, not guessing: a cooling system pressure test, a chemical combustion-gas test, and a borescope inspection of the suspect cylinders. A cracked open-deck block can't be fixed with a gasket, so confirming which failure you have is the most important step of the whole job, and it's where we start.

Will you do this job at my house?

No. Coolant Intrusion Repair. Head Gasket / Short Block Replacement is on my published list of jobs I turn down, it needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. I'd rather lose the job than learn it on your engine.

So what can you actually do for me?

Two things, and both are real. A second-opinion diagnostic at your car, $100–$250 flat, at your location, so somebody independent confirms that's actually what's wrong before you commit to a $6,500–$10,000 repair. And if you're weighing replacing the car instead of fixing it, a pre-purchase inspection on the replacement, $149–$399 flat, at the seller's location.

Why publish a page about a repair you don't do?

Because the useful part isn't the wrench. It's knowing what's actually failing, what the correct repair involves, and that shops quote $6,500–$10,000 for it, so you walk in knowing the job instead of nodding at a number. If you want that number checked before you pay it, that part I can do.

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Already holding a dealer or shop quote for this?

Send it over for a free second opinion. I'll tell you straight what the job actually involves, and if their quote is fair, I'll tell you that too.

Get a Free Second Opinion

Holding a big quote for this right now?

I'm not the guy who does this repair. I'm the guy who tells you whether you actually need it, before you spend $6,500–$10,000. Second opinion at your car, $100–$250 flat, in Mississauga, Oakville, Milton, Brampton and Etobicoke.

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Your options on this one