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Retrofit kit for fuel pump safety shut-off for classic Volvo and Saab models

Carburetor engines with mechanical fuel pumps have a fundamental disadvantage when it comes to starting: the fuel in the float chamber evaporates. After the hot engine is turned off, this happens quite quickly in some vehicles due to their design and the radiant heat, while in others it takes longer. After three weeks, the float chamber is almost always pretty much empty, often leaving behind unsightly residues that can sometimes be sticky.

Now, when starting the engine, the pump first has to refill the chamber, which can take up to a minute and puts a considerable strain on the starter motor. This is not what it is designed for in continuous operation.

For classic cars, it therefore makes sense to convert to an electric fuel pump. This pumps for a short time when the ignition is switched on, and the float chamber is full before starting. Starting itself is then usually only a short procedure.

But what happens in the event of an accident? Or a breakdown? As long as no one turns off the ignition, the pump continues to run. At least when it is supplied directly by the ignition plus. This circumstance could literally cause dangerous situations.

In a Volvo B16, B18, or B20, for example, the exhaust manifold is located directly under the intake manifold, and if the engine is really hot, dripping fuel would immediately ignite there.

This must not be allowed to happen in reasonably modern fuel-injected engines, where the pump is always switched off when the engine is no longer running.

Even in carburetor engines, an electric pump can be controlled quite easily via a relay. As soon as the engine no longer receives an ignition spark, the fuel pump is also switched off.

To ensure the safe operation of an electric fuel pump, a relay kit for electric fuel pumps is now available in our shop under the number 1045316.

Suitable for the following vehicles:

• Saab universal Classic: all models
• Volvo universal Classic: all models

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