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...
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450 Fortwo Clutch Removal
The clutch doesn't last forever. It wears down causing slipping and poor pull away.
Intercooler Scoop Removal
It's common to have a part of the lower intercooler scoop missing as they often get smashed off by stuff in the road like dead foxes and giraffes etc. The scoop is 2 parts so you can just replace the broken section if you want.
451 Euro4 Exhaust Retrofit
The Euro4 and Euro5 exhausts are very different but it's easy to retrofit.
Testing Glow Plugs
How to test the glow plugs to see which one is faulty.
450 fortwo Water Pump Change
How to change the water pump in a suprex engine
Roadster Fuel Pump Change
How to remove and replace the Roadster fuel pump
Crankshaft Rotation Sensor
The crankshaft is what the pistons are attached to. The crankshaft sensor measures the rotation of the crankshaft (and therefore the position of the pistons) so the ECU knows when to inject petrol and to fire the spark plug.
45bhp CDI EGR Clean
Diesels are dirty engines, they are noisy but they are efficient. However, if they can't breathe then you aren't getting the best from the engine.
451 Engine Mount Change
The 451 engine mount suffers badly from wear which allows too much engine movement, swapping it is very easy.
451 CDI AC Belt Change
Changing the air conditioning belt on the diesel isn't the same as the petrol model, they didn't put a pretensioner on that belt for you to loosen to enable the belt to just pull off. However, the alternative is actually easier and doesn't require you to retention the belt correctly afterwards.
Petrol 450 Engine Mounts
This is how to change the 3 engine mounts on the petrol 450 fortwo (600cc and 700cc). Side Engine Mounts Remove the bolts from the X-frame on either side and remove it from the car. You can just undo the top bolts and pull the x frame down to get some clearance...
Changing Glow Plugs
How to change the glow plugs in your smart fortwo.
Top Breather Pipe Repair
If your top breather has failed and you are having problems changing it, repair it instead.
451 Air Box Removal
Want to remove the air box to make something more interesting?
450 fortwo Belt Change
This page covers the AC belt and alternator/water pump belt. Air Conditioning Belt Look at the right hand side of the engine. It's not easy to see. Find the tensioner pulley wheel. Use a Torx45 bit to loosen the screw arrowed in the photo below. Push the pulley wheel...
Seized Alternator
On the 450 fortwo and the Roadster, due to the open design and the placement of the alternator, if you drove your car in wet conditions and then left the car standing for a few weeks, there is a chance it won't start. This is because water gets in and creates rust and...
Gearbox Removal
Why remove the gearbox? Maybe you want to change the clutch, maybe your gearbox is fucked.
Intercooler Fan Removal
The intercooler fan is visible over on the left side of the engine bay. Removal is fairly easy. Disconnect the electrical connector from the intercooler fan. Disconnect the throttle body electrical connection and then remove the 4x Torx E10 bolts. Undo the pipe clamps...
Intercooler Radiator Removal
Remove the intercooler fan to gain access to the intercooler radiator. As you have already removed the upper intercooler pipe, you just have to remove the lower intercooler pipe. This runs from the right hand port of the intercooler radiator to the turbo. Just loosen...