Engine Power Failure Causes and Symptoms

We are to determine what are the symptoms and causes of an engine power failure.  A car is just like a human body, do you agree?  When I feel a stomach ache I am having a symptom, a symptom that speaks of a cause, a cause that should be addressed.

Stomach ache is not an illness rather it is a symptom.  This is through with a car we have to be observant, why is it having a loss of compression, having an unusual loud knock, and emits bluish smoke?  It is giving the message that there is a problem causing it and that is what we are going to find and fix.

1) Loss compression, A Symptom

Let us assume that carburetion and compression are all precise from the assembly and is expected of a brand new car. Here, I want to talk about a car that is used for several years that has come to the point that it can no longer deliver the desired power as it should be.

Referring to compression, this is the power of the piston to cause all moving parts of the engine. The experienced driver knows this during the engagement of first to fourth gears. When you press on the accelerator you are putting more fuel and air in the combustion chamber and the stronger the piston the engine has more power. If the driver feels the engine is getting tired of carrying the capacity limit of all the things and human on board there is a compression problem.


Why is loss compression a symptom of a crankshaft failure?

Engine Power Failure Causes and Symptoms-Crankshaft


Remember oil is very important to run your vehicle. Without this, a brand new vehicle’s engine will easily be toasted. When your car is on the stage of a loss compression due to worn piston rings and liners you are possibly losing much oil in the unexpected time.

Every time you run your car on low oil, under high heat conditions over an extended period the oil can become dangerously thick. Corrosive sludge will cause hard deposits on the cylinder head, pitted valves. The thickened, oxidized oil loses its fluidity and the ability to flow easily through the engine. This gives rise to metal-to-metal contacts and the first to be damaged are usually the connecting rod bearings. Because these are purposely built for the crankshaft to give smooth revolution when stuck or crushed it would surely damage the crankshaft, if not scratched only, it will be broken.


Possible causes of loss compression

a) Worn piston rings and liners

Engine Power Failure Causes and Symptoms-worn piston rings

In over ten years a car is used you expect the service life of piston rings and liners (sleeves) have come to the point to be replaced. Why? These parts rub each other every time the engine is run. Even the hardest steel in this world that is continually rubbed succumbs to friction and heat. In due time, the clearance needed for proper compression is no longer there because air escapes or released in between the piston rings and liner (sleeve)as the piston moves up and down.

b) Valve leakage

This refers to the valve prevented from being closed. Because it is not closed properly there is fugitive emission from the valve. Why is it called fugitive emission, because this is the one that escapes through the other and unintended holes! Air should only be released when the valve is opened. A common cause of valve leakage is due to dirt, rust, or the seat is damaged.


Engine Power Failure Causes and Symptoms-worn Valve Seats

Worn Valve seats

Engine Power Failure Causes and Symptoms-worn valves

What do you expect when your car has worn piston rings and valves?  Besides loss compression, you will experience more fuel and more oil consumption. Changing engine oil should be enough until the desired mileage is reached, that is 5,000 kilometers. If your car doesn’t have speedometer calculate the distance you travel every time you use your car. Depending on how regularly you use your car, it may reach the minimum of three months up.


2)  Unusual Loud Knock inside the Engine

In any engine, you will notice some audible fine knocks produced by valve clearances.  When you hear this it doesn’t bother you because it goes with the engine in even timings.  In fact, a good engine knock can be noisier when oil supply is not in its required level.  However, if you fill it to the right measurement the knocks slightly vanishes.

A loud knock in an engine cannot be minimized by oil and valve adjustments is a symptom of something serious that should be given attention to before your car stalls you along the way.  Even you overfill with oil your engine, the sound doesn’t minimize but instead, it worsens.  The possibility could be any of the parts connected to the piston-like connecting rod, piston pin, or connecting rod bearings are about to be replaced.

Engine Power Failure Causes and Symptoms-connecting rod

Engine Power Failure Causes and Symptoms-connecting rod bearings

Engine Power Failure Causes and Symptoms-piston pin

When your car overheats accompanied by knocks and you feel a decreased power when you accelerate, a possible problem is connecting rod bearings being slowly crushed.


3)  Bluish Smoke

Engine Power Failure Causes and Symptoms-bluish smoke


When your car emits bluish thick smoke this means oil is being mixed with your fuel into the combustion chamber.  Why the piston rings maybe are already worn?

Secondly, there is a leakage in the intake valve (s).  The valve seal may have been perforated or worn does oil passes through the valve stem and mixed with air and fuel.

Engine Power Failure Causes and Symptoms-valve seals

If you have addressed the causes you’ve found as you were led and guided by the symptoms, I am sure you have not only saved the crankshaft but also the possibility of an engine overhaul.

This is my opinion and understanding and I may be wrong.  If you agree this can be helpful for you.  However, if you don’t agree it is best for you to share your scientific explanation and experience that may benefit the audience around the world.

Thank you for reading my post.  If you have any question you can send me a private message through this email:  jjimmydolo@gmail.com,  and I will respond to you as soon as I read your message.



Loud Knocks Stopped the Car

Loud knocks in your engine are not to be ignored rather you have to pay attention and give immediate inspection before it leads you to a severe situation. I would like to share with you an experience to explain what this means to a car owner.

My wife and I traveled around 60 kilometers distance using the 1996 model Toyota L, Tamaraw series, jitney type AUV.  Approximately 30 kilometers far from our point of destination and where we are bound to, we have noticed knocking of the engine.


Toyota L Engine

Hearing that tolerable but disturbing sound, the loud knocks, we continued and were able to reach a ten-kilometer distance.  As we climbed up the road the car stalled.  We rested for a while to cool the engine that is above 180 degrees F temperature.  Maybe the temperature gauge was not functioning correctly because 180 degrees is still tolerable.

The engine was started and upon trying to advance had a loud knock and right there, the engine is dead.  We left the car in the rural site taking a bus downtown.  The following day the car was towed to a mechanic to their shop for an engine overhaul.

Possible causes could be traced from several reasons like overused oil, lack of oil, defective valve seats, valves.

Never ignore symptoms rather address it immediately and you will save time and money. Please read the causes and symptoms of engine power failure, check here.

The engine overhaul had cost a lot for it’s more than 29 thousand pesos and this includes the replacement of parts, machine shop services, and the mechanic’s service fee. The restoration took for almost a month because of the unavailability of parts around the area we have to procure it anywhere else where it is available.

This time we are still using it for church services and ministry and it’s still working efficiently.







MaxEngine Pro Review

MaxEngine Pro Inc. created Fuel Additive for Enhanced Engine Performance. Is this true or is a lie and is another scam?  Let us examine this.


MaxEngine Pro Review-additive tablet inside

MaxEngine Pro Review-MaxEngine Pro Tablets

They say,  MaxEngine Pro Inc. created a new of its kind fuel additive, which can be referred to as “multi-system additives” group. It differs from the other products of that kind in its shape – it comes in the form of tablets (pills) instead of liquid. MaxEngine Pro main ingredients are petroleum extract and hydrocarbon derivatives. Other special additives also present in the product’s composition, but the producer keeps them secret. The fuel additive is packed in a box, each containing 5 pills. Each tablet treats up to 75 liters or 750-900 km depending on fuel consumption.

Philippines, Thailand, and Vietnam will be the first countries where the product will be released for sale.

Reduces friction between metal engine components

I have a problem here, it is expected that any oil or additive you’ll add to your engine must contribute efficiency to it. But you should not be confused with this for it is a fuel additive and you know where the fuel goes in the engine.  I am very sure the engine components the company refers to are the piston, piston rings and the sleeves that could have direct access to the fuel with the additive for combustion. The fuel additive never goes to the different gears connected to the camshaft and crankshaft which is being lubricated by oil.

If the fuel additive together with the fuel is mixed with the engine oil surely your engine will burst.

Enhances engine power

They say this additive can double the horsepower of your engine.  By how?

If the company gives me a sample of my car which is an old one, much better and I will show it to the world.

Let’s do mathematics.  My car has 72 horsepower output (54kw) if I will use that additive it will become 144 horsepower.  That’s how simple I understand the statement, maybe you differ from my understanding.

Could you imagine that this is more than upgrading from Toyota L which is 72 horsepower to the 5L engine which gives 97 horsepower?  You upgraded to four times newer and advanced engine but the horsepower rose to only 25 horsepower, and this is the reality of inventions, companies don’t just double the horsepower.

How come that the fuel additive can double a 72 horsepower of an engine?  It’s unbelievable that by just adding additive you double your engine’s horsepower.  It’s impractical, it’s even illogical.

In fuel consumption when your engine horsepower is doubled meaning your expenses will be lessened by 50% isn’t it?  So if my car consumes a liter of diesel for fifteen kilometers and by adding the additive it should only use 7.5 liters in 15-kilometer run.

But it’s not, their findings proved fuel consumption is only reduced up to 17%.  So my fuel consumption is only reduced by 2.5 kilometers.

There’s a big inconsistency between the promotional statements and the actual results.

Automatically Regenerates Engine Component.

Their exact words state:
From the moment you put this new fuel additive in the fuel tank, your engine will automatically start regenerating.  The durability of its metal parts will increase up to 5-folds.  You wouldn’t have to constantly think how to protect the engine.  You will not hear any rattle nor feel any vibrations and will most likely forget that your engine has been in disrepair until recently.”

To our readers please think it over and over again that this is a fuel additive, not an oil additive.  So how come that a rattling engine becomes quiet when it will only pass through the combustion chamber.  It will not go to your engine oil so it has nothing to do with different parts of the engine like camshaft, crankshaft, bearings and all others connected to them.  Neither it will harden those all moving parts needing oil except for the piston rings and sleeves because these can be directly be supplied during the combustion process.

Come to think of a fuel additive that will increase the durability of a metal five times is absolutely a lie.  Metal is metal and nothing can add to its durability than the substance mixed when it was melted into a form of an engine part.

The bad thing here is that you can only notice the result after several weeks of using the additive.  While the additive is paid upon delivery you will have the access to the person who brought you the thing you have bought with thousands of Philippine currency.

What if it did not work?  Where can you find the person or an office?  Why not make it available in fuel refilling stations so you know whom you are charging accountability.

To me, if you don’t know anybody personally who have tried or tested the additive you should not rely on persons who deliver to you at any time and any place.  You might be buying an imitation that will actually add trouble to your vehicle.

It is good to be careful and prudent enough than to be sorry at the end. Don’t be fooled by counterfeit for scams are very much available around the internet world.

My friend’s in-law used a fuel additive sometime ago and his engine exploded but the company has nothing to do with it to help with the expenses for a new engine replacement.


What Best Oil Would You Use to Your Engine?

If you really want to have your engine run in the best condition you better use the synthetic oil. This is the true thing that protects every part of your engine every time you run it. MaxEngine Pro is not an additive for oil but an additive for fuel so it will not help protect your engine because it will go to the combustion chamber and it will be burned and exhausted.

The synthetic oil is formulated to give the best protection for both diesel and gasoline engines.


Full Synthetic Oils Include

Castrol Edge Professional Full Synthetic DIESEL OIL SAE 5W-30 C1


Mobil 1 120764 Synthetic Motor Oil 5W-30

Valvoline 0W-20 SynPower Full Synthetic Motor Oil-5qt (813460)

Pennzoil 550046122 Platinum 5 quart 5W-20 Full Synthetic Motor Oil.

Shell ROTELLA T6 5W-40 Full Synthetic Diesel Engine Oil.

Royal Purple 51520 SAE 5W-20 High-Performance Synthetic Motor Oil.

There are others I did not include but these are enough to show what synthetic is. I hope I have guided you in some way that you will not be misled by this MaxEgnine Pro additive.



How to Adjust Toyota L Valve Clearance

How to adjust Toyota L valve clearance is easy to do. This is how you will do it.

  • Be sure the clutch is in a neutral position.
  • Remove the cylinder head cover.
  • Turn the crankshaft counterclockwise to the top dead center

A video below is prepared to illustrate how it is done.

Valve Clearance adjustment for Toyota L set to .152mm (.006 inches) for intake and .254mm (.010 inches) for exhaust. I drove this car to test for about 100 kilometers and it’s pretty good in its performance. I did not see the temperature has something alarming.    It’s cool.  This is the most noiseless valve adjustment.  But if you want to hear a little bit noise you can set it on 178mm (.007 inches) for intake and .279mm (.011 inches) for exhaust.

This old car is still working properly.  According to Wikipedia,  It is the first diesel engine from Toyota to use a rubber timing belt in conjunction with a SOHC head.

Engines like 2L-II and 2L-T are still in production to the present day. Vehicles with the diesel engine were exclusive to Toyota Japan dealership locations called Toyota Diesel Store locations until the sales channel was disbanded in 1988.

So here I posted this as a product of my discovery.  A discovery not based on theory only but from direct experience to help others who own the same model and will be able to guide others with the same principle that can be applied to their own cars.


How to Adjust Valve Clearance

Watch the video on the link below:



Thank you for reading this post and watching the video.  If you have any question, an opinion which you think important to be added just email me at jjimmydolo@gmail.com and I will be willing to answer you as soon as I read your message.