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Premium Mod Lowering The Engine – 451451 Fortwo

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...

Premium Mod Crankshaft Rotation Sensor450 Fortwo452 Roadster

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.

Premium Mod Top Breather Pipe Replacement450 Fortwo452 Roadster

Failure of the top breather pipe valve can cause excessive oil usage and engine smoke. It's cheap to replace so why not do it before it breaks?

Normal Mod 450 Wastegate Actuator Hoses450 Fortwo452 Roadster

The question of which pipe goes where has come up a few times and as a true pro I didn't have the faintest idea so thought i'd better find out.

Premium Mod 450 Alternator Change450 Fortwo452 Roadster

The alternator is fairly robust but its open position means it is prone to seizing up. Let's sort it out.

Premium Mod 451 Fortwo Coolant Leak451 Fortwo

If your car suddenly overheated and you seem to have a waterfall somewhere behind the engine, there's a good chance you have a split coolant pipe.

Normal Mod Larger Throttle Body450 Fortwo452 Roadster

The original throttle body has a fairly small opening, bigger is better. For the smart 450 and Roadster ONLY. NOT 451.

Premium Mod 451 Coolant Drain451 Fortwo

Draining Unless you like to be scalded, wait until the car is cold. Remove the front service panel and undo the cap to the coolant header tank. Look under the car at the engine over to the right. Just behind the long drive shaft, partially hidden by some...