A diy’er might just replace all of the ignition components, spark plugs, wires, coil packs, and ignition module. Both these are easily diagnosed using equipment a shop has. The spark is weak, or occurs at the wrong time in relationship to the piston position. Compression is a simple thing for a shop or diy’er to measure. The fuel/air mixture isn’t being compressed as much as it should. A shop or diy’er would look for engine air leaks and test the fuel pressure. If it is only slightly off you might not notice it as a drivability problem, except perhaps when the engine is stressed, like during accelerations or going up steep hills. Creates an incomplete explosion, and so not as much force transferred to the crankshaft as the computer expects. ![]() Like trying to light a fire with wet wood. A diy’er can replace that sensor to see if it fixes the problem. That’s the sensor it uses to measure the crankshaft position and acceleration. ![]() Worn plugs and/or plug wires can cause the engine to 'misfire' and trigger a Check Engine Light. Although spark plugs and wires last much longer than they did in cars of the past, eventually they will wear out and need replacing. ![]() A faulty crank position sensor could cause this for example. Spark plugs ignite the air/fuel mixture in the combustion chamber of your Volkswagen. It’s measuring the crankshaft as not accelerating with each spark plug firing, when it actually is. If the engine is running ok otherwise, it could be that the computer is confused. Misfire means that the computer isn’t observing the acceleration in the crankshaft that should occur as the fuel/air mixture in each cylinder explodes, pushing the piston down, and forcing the crankshaft to accelerate.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |