ENGINE HEALTH PROBLEMS - INTRODUCTION
is not generally a very good yardstick of engine condition. More attention
should be given to how the vehicle has been driven and maintained during
those miles. While the air-cooled VW engine, especially Types 1-3, is
not known for extreme longevity, it can last more than 100,000 miles between
rebuilds. When driven inside its performance limitations and given proper
servicing, a car engine should last this long. Type
2 Bus engines and vehicles driven off-road typically last less.
potential engine problems have been divided into two basic categories.
Troubleshooting - which mainly covers relatively simple engine problems
such as failing to start or poor running. These are attributed to either
the engine being in a poor state of tune / adjustment or the wear /
failure of a relatively simple external component.
Tests - which may help pinpoint more serious internal engine problems.
These problems will usually be a result of either poor engine maintenance
or the engine's accumulated mileage.
common engine problems and faults. These are divided into the following
categories and Symptom / Reason / Remedy
Common General Engine Problems
2. Engine Cooling Problems
Fuel System & Carburation Problems
What follows are a number of ways to examine the engine for some
potential internal problems without having to dismantle it.
Power-Balance & Compression Tests
These tests show how much each cylinder contributes to the power
output of the engine.
2. Noise Diagnosis
Diagnosing engine noises can be a difficult and imprecise art. However,
in many cases it can give a reasonable indication of an engine's health
and help identify potential problems.
A worn out engine
will generally perform poorly and use a lot of oil. This is most likely
to be caused by worn rings and cylinders. But it is also possible for
engine performance to be low and oil consumption to be normal. In this
case, the valves, camshaft, or valve springs could be at fault.
for an Engine to Burn Oil
Sources of Engine Oil Leaks