nothing is perfect in this world
neither you nor me and not even the machines we encounter in our day to day life
now suppose one day you wake up late getting late for your work and when you try to start your car
you are like "oh my god " not again why this car engine doesnt work properly
now what comes first in your mind What could be wrong?
Now that
you know how an engine works(plz see the previous blog for more details ), you can understand basic things that can keep
an engine from running.
Three fundamental problems that might be spoiling your day
- : a bad fuel mix,
- lack of compression
- lack of spark.
Beyond that, thousands of minor things
can create problems, but these are the "big three." Based on the
simple engine we have been discussing, here is a quick rundown on how these
problems affect your engine:
- Bad fuel mix - A bad fuel mix
can occur in several ways:
-if your gas tank is empty
-clogged air intake so there is fuel but not enough air.
-problems in fuel system like it is providing much or lesser fuel , meaning that combustion does
not occur properly.
-impure fuel (like water in your gas tank) that makes the fuel not burn.
- Lack of compression - If the
charge of air and fuel cannot be compressed properly, the combustion process
will not work like it should. Lack of compression might occur for these
reasons:
-problem with piston rings like your cars piston rings are worn
(allowing air/fuel to leak past the piston during compression).
-The intake or exhaust valves
are not sealing properly, again allowing a leak during compression.
-The most common "hole"
in a cylinder occurs where the top of the cylinder (holding the valves and
spark plug and also known as the cylinder head) attaches to the cylinder
itself. Generally, the cylinder and the cylinder head bolt together with a thin
gasket pressed between them to ensure a good seal. If the gasket breaks down,
small holes develop between the cylinder and the cylinder head, and these holes
cause leaks.
- Lack of spark - The spark
might be nonexistent or weak for a number of reasons:
-If your spark plug or the
wire leading to it is worn out, the spark will be weak.
-If the wire is cut or
missing, or if the system that sends a spark down the wire is not working
properly, there will be no spark.
-If the spark occurs either
too early or too late in the cycle (i.e. if the ignition timing is off), the
fuel will not ignite at the right time, and this can cause all sorts of
problems.
- Many other things can go
wrong. For example:
-If the battery is dead, you
cannot turn over the engine to start it.
-If the bearings that allow
the crankshaft to turn freely are worn out, the crankshaft cannot turn so the
engine cannot run.
-If the valves do not open and
close at the right time or at all, air cannot get in and exhaust cannot get
out, so the engine cannot run.
-If someone sticks a potato up
your tailpipe, exhaust cannot exit the cylinder so the engine will not run.
-If you run out of oil, the
piston cannot move up and down freely in the cylinder, and the engine will
seize.
