What causes the camshaft to fail?
There are a variety of reasons that can cause the camshaft to fail and the most common of all is because they put the wrong type of lubricant. It is recommended that you use only the moly paste that came with your car's cam and use only engine oil for the lifters and cam. Keep in mind that you use regular oil, instead of synthetic oil during the break-in period. And speaking of the break-in period, make sure you follow the correct break-in procedure. If your camshaft didn't have proper break-in, there is high probability that your camshaft will fail prematurely.
In addition, some camshaft problems are caused by a mechanical interference like a spring coil bind. This happens when all the spring coils come in contact with each other before the valve is fully lifted. A retainer to valve guide interference can also cause your camshaft to fail. Same with valve to piston interference or rocker arm slot-to-stud interference. A worn-out distributor gear can also be the cause of your camshaft's demise. So to prevent your camshaft to fail, make sure you avoid the things that can cause it to fail prematurely.
Can I use an aftermarket performance camshaft on my Volkswagen Fastback?
Yes. Stock camshafts are often replaced with aftermarket performance ones for your car to have more engine power and better engine performance. Just make sure that you find the right replacement cam for it. In finding the right fit for your car, you should put into consideration your car's vehicle and engine application, your engine's compression ratio, fuel delivery system type, differential and transmission gearing, cylinder heads, the size of your tires, and if you have made other modifications in your car, say if you have modified your exhaust system and the likes. Also, you should make sure that you know the type of engine your car has. Because of this, you cannot just replace your camshaft.
Why does my car stall?
There are a number of reasons why your car stalls. One of the most common causes is a bad battery. If your car is stalling because of the battery, it may be a sign that your battery is going bad and already needs to be charged or replaced. However, before you replace your battery, check if the battery terminals are too dirty or corroded and if the wires are properly connected to it. It might need just a little cleaning. Another cause of stalling is a faulty or worn fuel pump. The fuel pump normally makes a buzzing noise when it is running. If you don't hear that when you try to start your car, your fuel pump might not be working. If the problem is coming from a bad fuel pump, you will not be able to start your car. Too much moisture in the gasoline can also cause your car to stall and affect your engine's performance.