This is the starter motor removed from the car. Actually removing it is a terrible job. Annoyingly, it's rarely the starter motor that fails so removing it is usually unnecessary. So, if you go to start the car and you only hear a click from the fuse box, you may have...
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Turbo Removal Roadster
Before you start, spray all the fixings with a penetrating oil. The more you repeat it and the longer you leave it, the better. Remove the rear panels, the exhaust, the lambda sensor in the exhaust, lower IC pipe and the TIK pipe. Remove the small E10 bolt from just...
Roadster Fuel Injector Removal
Warning Fuel injectors are connected to fuel pipes. Fuel can set you on fire and make your day miserable. No smoking, lighting farts or juggling flaming batons whilst you are doing this. It is important that you do NOT have the keys in the car. If the ignition gets...
450 Fuel Injector Removal
Warning Fuel injectors are connected to fuel pipes. Fuel can set you on fire and make your day miserable. No smoking, lighting farts or juggling flaming batons whilst you are doing this. It is important that you do NOT have the keys in the car. If the ignition gets...
451 Driveshaft Seals
If you look at the driveshafts where they exit the gearbox and notice oil everywhere, your driveshaft seals are crap. These seals are a lot more important on the 451. I'll explain the reason this later. Firstly you'll have to remove the driveshafts. Use a pry bar or...
451 CDI 54bhp Sensors
54bhp CDI - The Over-Engineered Pain In The Arse The 45bhp CDI engine was reliable and efficient, however, due to the Euro 5 emissions standards coming into force, smart had to make changes. They added a DPF (Diesel Particulate Filter) which removes the particulates...
Lowering The Engine – 451
This page covers tipping the engine to gain access to the pulleys and full lowering of the engine. Tipping The Engine As with other smarts, the access to the pulleys is restricted but tipping the 451 engine is a bit more tricky. Place a jack under the gearbox and...
Lowering The Engine – Roadster
The engine bay is quite restrictive so lowering the engine a bit can help a lot.
450 Fortwo Clutch Removal
The clutch doesn't last forever. It wears down causing slipping and poor pull away.
Turbo Removal 450 Fortwo 700cc
Before you start, spray all the fixings with a penetrating oil. The more you repeat it and the longer you leave it, the better. Remove the rear panels, the exhaust, the lambda sensor in the exhaust, lower IC pipe and the TIK pipe. Remove the small E10 bolt from just...
Roadster Lambda Sensors
The Lambda (O2) sensor is by far the most common fault that brings up the engine fault light.
MHD Belt Change
Jack the car up and remove the wheel to access the belt cover. Each end of the belt cover is a plastic plug. They are nice and easy to lever out... ...which releases the clips on the other side. With both plugs pulled down, the cover can be pulled from the car. You'll...
Roadster Thermostat Valve Change
What Are The Symptoms Of A Failed Thermostatic Valve? The thermostatic valve starts closed which only allows the the water to circulate around the engine. As the engine temperature increases, the water temperature also increases. Eventually, the thermostatic valve...
450 Thermostat Valve Change
What Are The Symptoms Of A Failed Thermostatic Valve? The thermostatic valve starts closed which only allows the the coolant to circulate around the engine. As the engine temperature increases, the coolant temperature also increases. Eventually, the thermostatic valve...
453 Engine Cover
453 Fortwo & 453 Forfour Engine Cover Some people had problems with the single quarter turn fastener in the previous Fortwos and Roadster. The 453 replaced the single fastener with something easier but takes ages to undo. Here is the 453 engine cover. There are 6...
451 CDI Alternator Belt Change
Getting The Old Belt Off Take a 15mm spanner and under the alternator tensioner nut and swing the alternator down. The old belt can be removed (if you don't have AC, if you do, remove that first) and the new belt fitted. Re-tensioning The Belt - The New Way This is...
451 Coolant Radiator Removal
If you have a leak in your radiator, fit a new one, don't rely on fluids like RadWeld. Changing the front coolant radiator is easy but actually getting to it is a long task. If you don't have air conditioning, it'll be the only time that you are glad that you don't....
451 54BHP CDI Losing Coolant
54BHP 451 Fortwo Diesel - Losing Coolant As of early 2015, this became a common problem that will affect all 54bhp 451 diesels eventually. The 54bhp diesel 451 was the October 2009 onwards model with the DPF (diesel particulate filter). Important This is an issue that...
Forfour Auto Gear Fault
No Gears The fault affects the semi auto version of the 454 Forfour This fault is becoming more and more wide spread. Not being a Forfour owner myself, I had no dealings with it but the fault is very similar to a fault on the 451. Ozzy site reader Chris had issues...
Roadster Exhaust Fitting
Remove the rear panels, this can be found here. Remove the crash bar using a Torx 45 screwdriver. There are 2 nuts holding the exhaust to the turbo. These can be removed with a 13mm or 1/2" socket. It is a wise idea to spray these with penetrating oil over the...