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bleedingfreak wrote:Biggy what is your mileage now? 20500 kms
And are you going to try out the Mobil1 Full Synthetic? i may do so, since it is suppossed to exceed CH4 spec http://www.mobil.com/USA-English/Lubes/ ... _5W-40.asp
And why not use API-CG4 rated oils? not sure...it is specifically stated in the owner's manual. need to do some more research on that
Greypatch wrote:Biggy did the water light come on ? nope...sedimentor light stayed off
Also Besides Neal and Massey who else offers the Alge-X and price range... i know for sure Achievors has them....price range $1800 - $2200 installed
Fire_Fighter786 wrote:Biggy why is the Mobil 1 better or preferred over the Amsoil full syth?
SNIPER 3000 wrote:DRIVER
Most diesel engine problems are related to the injection system. As such diagnosing diesel engine problems requires knowledge of engine and injection system operation.
This brochure provides you with the guideline to troubleshoot various diesel engine and injection system problems.
DIESEL ENGINE DIAGNOSTICS
Diesel engine problems that are most frequently encountered may be identified as follows
1. Excessive Exhaust Smoke
2. Engine Knocking
3. Engine Missing
4. Hard Starting
5. Lack of Power
6. Poor Fuel Efficiency
7. Fuel Leaks
8. Clogged Fuel Filters
These potential problems are briefly discussed below.
1. EXCESSIVE EXHAUST SMOKE
Excessive diesel smoke is due to incomplete combustion, normally caused by faulty injection system or other engine troubles. A small amount of exhaust smoke is normal during initial start-up or rapid acceleration.
Type of Smoke
Abnormal Exhaust smoke may be black, white or blue. Each type of smoke indicates engine problems and these are discussed below:
Excessive black smoke is caused by a rich air-fuel mixture. This may result form problems with the injection pump or infection timing, which may in turn be clue to a choked air cleaner, worn fuel injectors, adulterated diesel fuel or the engine itself.
White smoke occurs mainly during cold starts, when the fuel tends to condense into liquid and does not burn due to cold engine parts. The most common reason for white smoke are in-operative glow plugs low engine compression, a bad injector spray pattern, late injection timing or injection pump problems.
Excessive blue smoke indicates problems from low engine compression and/or worn piston rings, scored cylinder walls or leaking valve stem seals The blue smoke is caused by crankcase oil entering the combustion chamber and being emitted after partial combustion through the exhaust
2. ENGINE KNOCKING
All diesel engines produce a "knocking" sound when running. In a diesel engine fuel ignites when infected into the combustion chamber. This rapid combustion produces very high pressures generating a rumble or dull clattering sound Abnormally loud "knocking" may be due to diesel engine miss.
3. ENGINE MISSING
A diesel engine miss results from one or more cylinders not burning fuel properly. This is caused by injection system problems which include:
Clogged fuel filters
Incorrect injection timing
Low engine compression
Injection system leaks â€¢
Faulty injection pump
4. HARD STARTING
If diesel engine does not start it may be due to:
In-operative glow plugs
Restricted air or fuel flow
Bad fuel flow solenoid
Injection pump problem
Low battery power
A slow cranking speed is a common cause for starting problem. Being a compression ignition engine, a diesel engine must crank fast enough to produce sufficient heat for combustion
5. LACK OF POWER
Â·Lack of engine power may be caused by
Slack throttle cables
Incorrect governor settings
Clogged fuel filters
Dirty air fillers
Low engine compression
Other factors affecting combustion
6. POOR FUEL ECONOMY
Poor fuel economy may be due to:
Fuel leak Â·
Dirty air filter
Corrected injection timing
7. FUEL LEAKS
Leaking fuel lines or loose connections can adversely affect the performance of a diesel engine Pinpointing exact locations of fuel leak become much more easier when the engine is on Since fuel is injected at high pressure extra care must be taken as the leaking fuel can cause serious injury
If signs of fuel leakage are detected use a piece of cardboard to find the leak, move the cardboard around each fitting If there is a serious leak, it will strike the cardboard and not your hand, thereby avoiding serious injury to your hand
8. CLOGGED FUEL FILTERS
Other than the main filter installed in the fuel line for draining water, diesels have sock filters fitted in the fuel tank and some times in the injector assembly as shown below For optimum performance these filters must be kept clean.
Diesel Compression Test
Diesel engine compression test is similar to compression test for petrol engine. In diesels compression pressures are in the range of 3,000/ 4,500 psi Readings in each cylinder should be in the range of 50 to 75 psi of each other
The resistance of each glow plug increases as the cylinders fire A no change in the resistance of any particular cylinder's flow plug will show that the cylinder in NOT firing. Pyrometer, a temperature sensing device can be used to detect temperatures at exhaust of each cylinder to confirm the NOT firing cylinder.
Injection Pressure Test
An injection pressure test uses special valves and high pressure gauge to test the following
Injector opening pressure
Injector nozzle leakage
Injection line pressure balance
Injection pump condition
Due to the versatility of this tester it helps in quickly locating bad nozzle, clogged injector filter or faulting pump.
DIESEL INJECTOR SERVICE
Most diesel engine problems are associated with the injection system Major injector system components have been discussed in driver energy tips No. 4 titled "Understanding and Maintaining Diesel Vehicles" In the following section information is provided on the proper functional characteristics of the diesel injector
Injector Opening Pressure
Typical diesel injector opening pressure is approximately 1,700 to 2,000 psi (pound per square inch) of opening pressure is not within service manual specifications, rebuild or replace the injector.
Injector Spray Pattern
Some diesel injectors make chattering sound during operation while others do not. However, all nozzles should make a swishing or pinging sound when spraying fuel.
There should be a narrow, cone shaped mist of fluid. A solid stream of fuel, uneven spray, excessively wide spray or spray filled with solid droplets indicates that the injector needs service and or replacement.
DIESEL INJECTION SERVICE TIPS
Wear safety glasses when working on a diesel injection system.
When in doubt, refer to a service manual for the make of vehicle being serviced. The slightest mistake could upset engine performance or cause engine damage.
Always cap lines or plug fuel end fittings to prevent entry of foreign matter.
Never drop a diesel injector or injection pump. They can be damaged.
Remember that high pressure inside a diesel injection system can cause serious injury.
Some diesel injection systems must be bled (air removed) after repairs.
Clean around fittings before they are disconnected.
Adhere to all torque specifications. This is extremely all the more important on a diesel engine.
Never use a bent, frayed, or kinked injection.
navara boy wrote:so biggy the amsoil is good but which grade can i use i am going to do a 10000 change soon and i want a full synthetic and it's availability must be good too.
biggy82 wrote:Fire_Fighter786 wrote:Biggy why is the Mobil 1 better or preferred over the Amsoil full syth?
i would not say it is preferred over the Amsoil. in fact, i would like to try this: http://www.amsoil.com/storefront/ame.aspx
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