Portmill Engineering Limited

09/09/2026

https://www.pmautocare.co.uk/

MOT testing, servicing, tyres, wheel alignment, brakes, diagnostics, repairs and fleet support in Thamesmead.

04/09/2026

Ford Transit 2.0 EcoBlue — One Tough Repair

One of the toughest injector jobs we’ve tackled at Portmill Engineering.

04/09/2026

Ford Transit 2.0 EcoBlue — One Tough Repair

One of the toughest injector jobs we’ve tackled at Portmill Engineering.

Water pe*******on and corrosion had effectively seized the injectors into the cylinder head. One injector had also corroded through, causing a significant diesel leak while the engine was running.

Even specialist pneumatic extraction equipment couldn’t remove them conventionally. We had to dismantle the injectors in situ and carefully extract the remaining sections — without damaging the cylinder head.

Success. Cylinder head saved. ✅

Repair included:
🔧 Seized injector extraction & replacement
🔧 Cylinder-head overhaul
🔧 New timing belt & tensioner
🔧 New oil-pump belt
🔧 Sump/timing cover removal & reassembly

Sometimes the hardest part isn’t replacing what’s broken — it’s removing it without destroying what’s still good.

21/06/2026

The countdown is on! 🏁

One of the highlights of the endurance racing calendar is almost here – the 12 Hours of Nürburgring. An event that brings together world-class teams, incredible machinery, and some of the finest drivers to tackle one of the most demanding circuits on the planet.

21/06/2026

Mercedes CLA250 2.0 Turbo Shooting Brake – back where it belongs. 💥

After a complete engine rebuild, this 200+ bhp machine is back on the road, stronger than ever.

🔧 Full engine rebuild
⚙️ Lightweight piston modification
⚙️ Uprated piston rings
🛢️ Filled with Liqui Moly Race Tech GT1 10W-60 engine oil
🔩 Full automatic gearbox service with new oil and filters

The result? A smooth, responsive engine, strong turbo performance, and a car that drives like new with plenty of power on tap.

Every engine rebuild is a combination of engineering, precision and attention to detail. It’s satisfying to see another performance engine brought back to life.

Way to go. 👊

06/06/2026

1 Minute to Midnight…

With the clock ticking down to race weekend, disaster struck. A steering rack fault appeared at the worst possible moment.

At first, it looked impossible. Parts, time, and pressure were all against us. Right up until the very last minute, I genuinely didn’t know if we’d be able to get the car finished and onto the grid.

But that’s motorsport.

Long hours, problem-solving, teamwork, and refusing to give up. The steering rack was replaced, the car was aligned, tested, and signed off just in time.

Against all odds, we made it.

The car is ready.
The team is ready.
See you on the grid. 🏁

25/05/2026

“Just a quick engine service…” they said 😅
Meanwhile… full strip-down, crank out, pistons out, timing assembly apart, head completely rebuilt and every clearance checked by hand.

This one might have been saved earlier with better oil quality and shorter oil change intervals.
Poor lubrication and extended servicing intervals can quietly turn into a very expensive lesson.

Engine overhauls are precision work — not just replacing parts, but measuring, inspecting, machining and rebuilding everything back to factory tolerances. 🔧⚙️

Back together properly soon.

WorkshopLife

16/05/2026

Reviews like this remind us why we do what we do.
Not just to repair vehicles, but to build trust through knowledge, honesty, and hard work.

At Portmill Engineering, we’ve always believed that integrity matters. Whether it’s motorsport preparation, complex diagnostics, everyday repairs, or simply giving honest advice — the goal is always the same: deliver the highest standard possible.

Skill comes from years of dedication. Reputation comes from consistency.
And seeing customers recognise that means a great deal to us.

Proud of the team, proud of the standards we keep, and grateful for every customer who trusts us with their vehicles.

Thank you for the support.
— Portmill Engineering Ltd

09/05/2026

Head gasket failure.
One mistake many people make is leaving the engine sitting before repair.

When the head gasket fails, coolant and water can enter the engine internally — reaching cylinders, piston rings, bearings, and other critical components.

Even over a short period of time, corrosion starts, oil becomes contaminated, and internal engine damage develops rapidly.

What could have been a relatively simple repair can quickly turn into a complete engine replacement.

This customer went from a repairable head gasket job… to needing an entire engine.

If you suspect head gasket failure:

* Stop driving immediately
* Do not keep topping up coolant and continuing to use the vehicle
* Get the engine inspected as soon as possible

Early diagnosis saves engines — and saves money.

03/05/2026

This is what poor oil quality does to a modern engine.

This Jaguar Land Rover unit arrived with:
– High oil consumption
– Poor starting
– Gradual performance loss

At just 88,000 miles, the internal damage was already severe.Inspection revealed classic lubrication breakdown:
• Piston skirt scoring and heat damage
• Oil control failure → excessive consumption
• Bearing wear on crankshaft journals
• Carbon contamination throughout the system

This isn’t a design issue.
This is oil failing to do its job.