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Your Distributor cap worn out? » Read more about common malfunctions • Repair • Replacement manual

Longstanding helper for the ignition The distributor cap is an integral construction component since the advent of series automobile manufacture. It serves to protect the delicate mechanism of the ignition contact and to forward the ignition voltage to the ignition cable. The nature of its design has proven itself for many decades. Where is the distributor cap? The distributor cap is easy to find. Just follow the ignition cables from the engine. They all lead to one point. This is the distributor cap. The three, four, five, six, or eight cables from the spark plugs or cylinders of the engine are arranged in the distributer cap in a circle. In the middle is yet another cable that comes from the ignition coil. This is where the electricity from the highly transformed voltage comes from and runs through the distributor arm into the circuit breaker, which is located beneath it, via a carbon contact. There, the voltage is returned to the distributor arm at just the right moment by means of a transmitting spark. From there, the spark jumps to the contacts beneath the distributor cap in the ignition cable and the voltage is passed on to the spark plug. The distributor arm rotates in sync with the cylinder's firing order and makes the engine run. The distributor cap is a wearing part A distributor cap is made of a highly insulating plastic. It is located in close proximity to the engine. The high temperatures, constant vibration and exposure to oil or gasoline fumes attack the distributor cap's material with time. The plastic can become cracked and brittle over time, allowing moisture to make its way into the ignition system. Before that happens, the distributor cap will probably have become ripe for replacement for other reasons: Its weak point are the ignition contacts on its bottom side. Whenever a spark transfers, a little bit of material from the surface is melted away. Over time, this process leaves behind an ever thicker oxide layer, which results in ever poorer conduction of the ignition voltage. A temporary solution is to clear the contacts by scratching the cake off with a screwdriver. However, this increases the spark gap and consequently the erosive effect. If a distributor cap defect has been detected, it is best to simply replace the cap. Simple repair A distributor cap is one of the easiest parts to replace on a vehicle. It is attached to the distributor with two clips or with a simple screw connection. This fixture can be detached with a few simple steps, and the ignition cables are simply removed - that's all it takes to remove the distributor cap. Here's some good advice though: Each ignition cable is plugged into the same spot on the new distributor cap immediately after unplugging it. This ensures that the ignition sequence is preserved. Inexpensive spare parts from Autopartspro A distributor cap can be purchased at Autopartspro with prices starting as low as 5 euro. Thus, there is no reason to drive around with a poorly repaired distributor cap. The ignition system will thank a new distributor cap by providing a higher level of reliability.

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