G
Guest
Guest
From. Dick Valentine
Over the years I have operated and run many vehicles including trucks,
so although my experience relates mainly to diesels some of the points
here apply to petrol engines as well. It is not uncommon in the
commercial world to find Lorries that have covered up to a 1,000,000 or
more miles. How is this? Usually by using common sense & good servicing.
Let's look at this in more detail.
1) Engine oil, It matters not what oil is used as long as it is of good
quality and appropreate to the climate and conditions where the vehicle
is being used, Its main job is to lubricate moving parts, but it also
forms part of the cooling system removing heat from some of hottest
parts of the engine. The action of heat on oil is that it can become
acidic over a period of time. As the engine gets older the oil is
required to work harder and as parts wear this allows soot and other
combustion residues to be suspended in the oil, particularly in diesels.
I have heard some people say as I top up the oil often I don't need to
change it so much "not good thinking" as all the nasty things in the oil
are still there in the sump.
The bottom line to the above is change the oil and oil filter at the
recommended intervals, a gallon of oil and a filter is much cheaper than
an engine rebuild.
2) Filters: Engine oil filters, use good quality some are fitted with
non return valves and other devices to suit a particular engine; some
cheap filters omit some of these devices which can be detrimental so be
aware.
Fuel filters are there to keep the fuel clean, in the UK most fuel is of
good quality so don=92t need to be changed at every service. Some also
double as water traps so need to be drained at regular intervals.
Some older vehicles use filters where only the element inside it are
changed these are normally supplied with new gaskets or O rings USE THEM
as the old ones can be deformed or cracked. A thin film of oil applied
to oil or fuel filters new gaskets, helps to seat them back when
refitting.
A useful tip is to fill your fuel tank to the brim once in a while this
has the effect of cleaning all the crud off the sides and top of the
tank.
Some fuel pumps and diesel injector pumps are fitted with small gauze
filters that look like a small thimble, however it is not recommended
that these Items be removed unless you know exactly what to do, and is
best left to experts.
Once a new fuel filter is fitted the system needs to be bled through. On
petrol engines this is not a problem as long as everything has been
correctly fitted a couple turns of the engine and it should fire up.
Diesels however are little more difficult, a lot of filter housings have
a bleed screw on the top, slacken this screw and pump fuel through until
pure fuel shows with no air bubbles retighten the bleed screw, next undo
the bleed screw on the side of the injector pump if it has one and
repeat above. Finally crack an injector pipe if poss near the injector
and turn engine over on the starter once all the air is out the engine
should start. Remember that even a minute amount of air in the system
will cause problems the engine will run erratically or not at all. If
after having done all this you still have a problem seek expert advise.
Air filter: Probably the most neglected device on most engines, replace
or clean at recommended intervals, it is also a good idea to inspect the
cleaner housing as most are fitted with devices to assist cold starting,
some have winter and summer settings, make sure everything is correctly
set and working as it should. Just a thought a 2.5 liter engine at
2000rpm is using thousands of liters of air an hour; all of it is being
filtered by the air cleaner. An air cleaner that is blocked or even part
blocked is like running an engine on choke this applies to diesels as
well. This will cause higher running costs and possible engine damage.
Look after your air cleaner and it will look after you.
I am sure there are things I have forgotten to mention so please feel
free to make further comments, remember good servicing can save in the
long run.
Happy motoring and kind regards
Dick Valentine Rugby Warks
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.405 / Virus Database: 268.11.5/425 - Release Date:
22/08/2006
Over the years I have operated and run many vehicles including trucks,
so although my experience relates mainly to diesels some of the points
here apply to petrol engines as well. It is not uncommon in the
commercial world to find Lorries that have covered up to a 1,000,000 or
more miles. How is this? Usually by using common sense & good servicing.
Let's look at this in more detail.
1) Engine oil, It matters not what oil is used as long as it is of good
quality and appropreate to the climate and conditions where the vehicle
is being used, Its main job is to lubricate moving parts, but it also
forms part of the cooling system removing heat from some of hottest
parts of the engine. The action of heat on oil is that it can become
acidic over a period of time. As the engine gets older the oil is
required to work harder and as parts wear this allows soot and other
combustion residues to be suspended in the oil, particularly in diesels.
I have heard some people say as I top up the oil often I don't need to
change it so much "not good thinking" as all the nasty things in the oil
are still there in the sump.
The bottom line to the above is change the oil and oil filter at the
recommended intervals, a gallon of oil and a filter is much cheaper than
an engine rebuild.
2) Filters: Engine oil filters, use good quality some are fitted with
non return valves and other devices to suit a particular engine; some
cheap filters omit some of these devices which can be detrimental so be
aware.
Fuel filters are there to keep the fuel clean, in the UK most fuel is of
good quality so don=92t need to be changed at every service. Some also
double as water traps so need to be drained at regular intervals.
Some older vehicles use filters where only the element inside it are
changed these are normally supplied with new gaskets or O rings USE THEM
as the old ones can be deformed or cracked. A thin film of oil applied
to oil or fuel filters new gaskets, helps to seat them back when
refitting.
A useful tip is to fill your fuel tank to the brim once in a while this
has the effect of cleaning all the crud off the sides and top of the
tank.
Some fuel pumps and diesel injector pumps are fitted with small gauze
filters that look like a small thimble, however it is not recommended
that these Items be removed unless you know exactly what to do, and is
best left to experts.
Once a new fuel filter is fitted the system needs to be bled through. On
petrol engines this is not a problem as long as everything has been
correctly fitted a couple turns of the engine and it should fire up.
Diesels however are little more difficult, a lot of filter housings have
a bleed screw on the top, slacken this screw and pump fuel through until
pure fuel shows with no air bubbles retighten the bleed screw, next undo
the bleed screw on the side of the injector pump if it has one and
repeat above. Finally crack an injector pipe if poss near the injector
and turn engine over on the starter once all the air is out the engine
should start. Remember that even a minute amount of air in the system
will cause problems the engine will run erratically or not at all. If
after having done all this you still have a problem seek expert advise.
Air filter: Probably the most neglected device on most engines, replace
or clean at recommended intervals, it is also a good idea to inspect the
cleaner housing as most are fitted with devices to assist cold starting,
some have winter and summer settings, make sure everything is correctly
set and working as it should. Just a thought a 2.5 liter engine at
2000rpm is using thousands of liters of air an hour; all of it is being
filtered by the air cleaner. An air cleaner that is blocked or even part
blocked is like running an engine on choke this applies to diesels as
well. This will cause higher running costs and possible engine damage.
Look after your air cleaner and it will look after you.
I am sure there are things I have forgotten to mention so please feel
free to make further comments, remember good servicing can save in the
long run.
Happy motoring and kind regards
Dick Valentine Rugby Warks
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.405 / Virus Database: 268.11.5/425 - Release Date:
22/08/2006