Free Car Diagnostic

Showing posts with label Engine Diagnostic. Show all posts
Showing posts with label Engine Diagnostic. Show all posts
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Temperature Gauge Reads Hot During Traffic

Temperature Gauge Reads Hot During Traffic

When temperature gauge reads hot during traffic it means that there is something wrong with the fan. This particular problem suggests that there is something wrong with the fan. You see the main purpose of the fan is to keep the engine cool when the vehicle either moving slowly or stop such as in prolonged slow traffic.


The reason why temperature gauge reads hot during the traffic


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Temperature Reads Hot After Engine Start


Temperature Reads Hot After Engine Start

If the temperature reads hot after the engine is started the possible reason is a lack of coolant, collapse radiator hose, bad water pump, or a bad thermostat.

Possible reasons why temperature reads hot after engine start


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Engine Lacks Power on Flat Roads and Uphill Driving

Engine Lacks Power on  Flat Roads and Uphill Driving

The overall loss of power usually points to a fault in either the ignition system or fuel system, especially on a low mileage car.

The reason why the engine lacks power on flat roads and uphill driving
(1) The problem with spark plugs or spark plug wires
(2) Clogged fuel injector


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Car Start But Blue Smoke Comes Out from Exhaust

If the car start but blue smoke comes out from Exhaust, it means that the engine is burning oil. The problem is why the engine is burning oil, that is what we are going to find out. When an engine burns oil, the most common reason is a bad ring. If the engine has a bad ring aside from burning oil it will also show signs of loss in power, especially when driving uphill.

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Black Smoke from Exhaust of Car

Black smoke from the exhaust of the car comes out while driving. The possible reasons for black smoke from the exhaust is a clogged air filter, bad fuel injector sensor (throttle position sensor, coolant temperature sensor, and mass airflow sensor).

Clogged air filter

Black smoke that comes out the exhaust is an indication of too much gas burned inside the engine combustion chamber. The most common reason why there is black smoke from the exhaust is the clogged air filter. When the air filter is clogged, enough amount of air will be restricted from going inside the engine making the air/fuel to become reach (too much fuel with not enough air).

Black Smoke from Exhaust of Car


Open the hood of the car and locate the air filter, refer to the manual covering the vehicle model if you have difficulties finding the air filter. Remove the air filter and examine closely if there is too much dirt present on the filter, if there is too much dirt then this is what restricting replacement parts from going inside the combustion chamber that is why the air is insufficient and the fuel is too much.

Replace the air filter. This should fix the problem. Any auto parts have an air filter for their inventory so nothing to worry about where to find replacement parts.

Bad Fuel Injector Sensor 

This problem is only possible for cars with fuel injection system. Usually, the problem for this system is the electronic sensors that measure various engine factors which the car computer system is used for calculating the amount of fuel that must be injected on each engine cylinder. If one the sensors are faulty then wrong data will be sent to the car computer and the air/fuel mixture will be wrong which in this case the fuel is too rich.

There are three sensors that when faulty can cause black smoke, the sensors are throttle position sensor, engine coolant temperature sensor, and the mass airflow sensor.

Throttle Position Sensor

Engine Coolant Temperature Sensor

Mass Airflow Sensor

There is only one way to determine if the sensor is faulty, this is to hook up the car to an engine analyzer. The engine analyzer will display trouble codes which can be used to determine if the sensor is the problem. With that said, bring the car to a reputable car shop to have the engine analyze with an engine analyzer. This kind of job is costly. If one of the sensors is bad, just replace the sensor to fix the problem of black smoke.

Related Topics:

White Smoke from Exhaust of Car
Car Start But Blue Smoke Comes Out from Exhaust

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High Pitch Squeal from Engine While Running

While the engine is running, the engine produced high pitch squeal. This possible reason is because of a worn drive belt, faulty alternator, or bad steering pump.

 

Possible cause of high pitch Squeal from engine

Worn Drive Belt

The drive belt is the one that drives various engine accessories. When the drive belt worn out or otherwise damaged it will produce a high pitched squeal sound while the engine is running.

High Pitch Squeal from Engine

Faulty Alternator

Another possible cause of high pitch squeal sound coming from the engine compartment is the faulty alternator. Usually, the bearing inside the alternator is worn out if the bearing is worn out it will produce squealing noise especially when the alternator spins.

High Pitch Squeal from Engine

Bad Steering Pump

The bad steering pump is also a possible cause of high pitched squealing when the steering pump fails it will produce sound especially when turning at low speed. However, the possibilities of the steering pump as the cause of high pitch squeal are very rare.

High Pitch Squeal from Engine

The first thing to do is to spray WD-40 lubrication on the alternator bearing if the alternator bearing is not sealed, also spray on the underside of the drive belt. However, this will only be a temporary step to solve the problem of high pitch squealing noise. If the problem still occurs, then no other option but to bring the car to a reputable car shop and ask the mechanic to check the alternator and the steering pump. Repair the affected parts or replace the parts if necessary.

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What Causes Ticking Noise in Engine While Running

Ticking Noise in Engine

 

What causes ticking noise in the engine? If ticking noise in the engine is heard while running is an indication of a poorly lubricated engine. The reasons for this is the oil inside the engine is not enough or just simply the engine lacks engine oil or the oil pressure inside the engine is low.


Ticking Noise in Engine

What causes ticking noise in the engine?



Ticking noise is related to engine oil problem, with that said the focus of troubleshooting for this kind of problem is limited to checking the engine oil do the following.

1) Lift the hood of the car and locate the dipstick for the engine oil. Check the engine oil level by removing the dipstick. Wipe the end portion that dips with oil using a clean cloth.

2) Put back the dipstick on the original location (dipping it again on the engine), and put it out again and check the reading. If the reading is below the full line then the engine oil is low.

Ticking Noise in Engine

How to Check Engine Oil video credit

When the engine oil is low then the engine is poorly lubricated. This causes the engine ticking sound that you heard coming from the engine.

If the dipstick reading is within the full line this means that the oil level is enough and bring us to the next possible reason for engine ticking which is a low engine oil pressure inside the engine.

Now to confirm if the oil pressure inside the engine is low, Observe the oil indicator on the dashboard, if the oil indicator light comes on while the ticking sound occurs when there is a problem with lubrication system, why does your car's oil light come on? well, it is a case of low oil pressure. Otherwise, it is a leaking exhaust manifold or a loose valve is causing the ticking sound in the engine.

Ticking Noise in Engine

When the oil pressure is low not enough oil will reach most of the engine components causing ticking noise from the engine. What causes the oil pressure to become low? The oil pressure will become low if the oil pump is faulty or if the oil pan screen is clogged.

Possible cause of ticking noise in the engine
Poor engine lubrication because of low engine oil level, low oil pressure because of faulty oil pump or clogged oil pan screen, loose valve or leaking exhaust manifold.


How to fix ticking noise in the engine
Engine lubrication is poor. Add enough oil in the engine. Consult the vehicle owner’s manual for the type of oil to be added.

Ticking Noise in Engine
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Oil pressure is low. Bring the car to the car shop to determine whether bad oil pumps or a clogged oil pan screen is causing the ticking noise in engine and repair if necessary.

 Ticking Noise in Engine
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Exhaust manifold leak or loose valve. Bring the car to a shop and ask the mechanic to check for any loose valve in the car engine or a leak on the exhaust manifold. Sometimes a valve adjustment or a tightening of loose bolt on the exhaust manifold can solve the problem of engine ticking noise that causes by these car problems.

 Ticking Noise in Engine
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Related Topics:

Nissan Navara Oil Low Light Reset
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Car Jerks When Accelerating

Car jerks when accelerating especially during cold rainy morning when the engine is cold. Several reasons are causing it depending on the condition of the car when it happened. 

Possible reasons why car jerks when accelerating
Moisture in Distribution Cap

Since the acceleration problem happens when the engine is cold especially during wet morning this suggests moisture in the distributor cap. This happens because when you park the car overnight especially on the outside, moisture is formed inside the distributor cap because of the wet weather. The moisture allows the electrical current to arc inside the distributor cap that causes engine misfiring because of uneven power is produced and when the engine misfire the car jerks when accelerating.

How to avoid the car to jerks when accelerating because of moisture in the distributor cap. To avoid having moisture in the distributor cap from happening park your car inside the garage if you expect rain to from come.

Vacuum Leak;

If the car jerks gradually happened when accelerating and become worse over time. When the car jerking happens gradually and becomes worst overtime then this indicates a possible problem of a vacuum leak. When the car has a problem with vacuum leak it will not be noticeable initially and it will become noticeable when it gets worst. The fuel system creates a vacuum in which is one of the key factors in determining the amount of fuel the engine will get. When there is a vacuum leak on the system the amount of fuel the engine gets will become wrong and this will result in car jerking.

Bring the car to the car shop and ask the mechanic to check for any vacuum leak on the system. Usually, the most common parts that are always the source of a vacuum leak is the Exhaust Gas Re-circulation (EGR) and the PCV valves which you should suggest to the mechanic to check.


Faulty Throttle Position Sensor 

If the car jerks happened constantly when accelerating at any engine temperature When your car has fuel injection system usually the reason for this problem is a bad throttle position sensor. The throttle position sensor is device present in a fuel injection system, the purpose of this device is to measure how far the driver depressed the gas pedal and feed the data to the car computer which calculates how much fuel the system should inject into the engine. Now, when the throttle position sensor is bad wrong data will be sent to the computer and the amount of fuel injected to the engine will also become wrong that is why the car jerks during acceleration.

Throttle Position Sensor

Bring the car to a shop and ask the mechanic to check the throttle position sensor. Explain to the mechanic the symptom of the problems you have noticed for a better understanding of the problem and made the troubleshooting easy.  

See also: Car Stalling While Accelerating
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Why is there blue smoke coming from my exhaust?

Do you know why is there blue smoke coming from your exhaust? Well, if the car exhaust produces blue smoke then obviously the engine is burning oil. There are reasons why an engine burns oil those are bad rings, bad valve stems seals, or if the car have turbo charger a leaking turbo charger seals is what cause the engine to burn oil.

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What Makes a Car Engine Ping?

What makes a car engine ping? Several reasons makes the engine ping, however the reasons will depend on the condition. If the engine produce pinging noise when driving uphill but no noise when driving on normal roads, it means the fuel you use is a low grade fuel or the air that comes in the combustion chamber is thin.


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Car Runs then Dies

Initially the car runs after starting then after several seconds the car dies. The possible reasons is run on, fast idle speed or leak on fuel injectors.

 

Engine Pinging Noise when Driving Uphill

The engine produces pinging noise when driving uphill but no noise when driving on normal roads. The reason is because low octane gasoline is used, the air is thin or load sensor is faulty.

 

Engine Ticking Noise While Driving

Engine ticking noise while driving is heard or there is a slight tapping noise from the engine while the engine is running.

 

Car Sputters When Starting

During starting the car sputters when starting, this happens if the engine is out of gas, the distributor cap has moisture, the timing belt is damage, the coil are bad or there is a problem on the electronic ignition.


Engine Poor Response when Clutch Pedal is Release

The engine response poorly when the clutch pedal is release the reason for this problem is that the clutch is out of adjustments or is badly worn out.

 

Engine Backfires While Driving

The engine backfires on the tail pipe while driving mainly because of the problem on the air injection system, another reason is the valve is not sealing or the engine timing is off.


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Engine Starts but Will Not Continue Running

The engine start but will not continue running. The reason for this problem is a bad electronic sensor, bad electric fuel pump or there is a problem on the fuel injection system.


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Engine Pinging Sound When Driving on Flat Roads and Uphill

While driving on flat roads there is a pinging sound coming from engine, also pinging sound occurs while driving uphill. Usually the reason of pinging sound is the use of low grade gas, other reasons are faulty turbo charger knock sensor, the EGR valve is faulty or spark plug end cover is covered with carbon. 


How to Diagnose Engine Overheating

Engine overheating happens when the balance of the cooling capability of the engine and the heat generated when the engine operates starts to deteriorate. When this balance is deteriorating it will extremely increase the coolant temperature that causes the coolant to boil.


The coolant will be boiled into steam and spew out from the deteriorated portions like the reservoir or radiator. Continuously running the engine at this condition will damage the engine.

What to do when Engine Overheats?

1.If the car can be move, move it safely off the road and away from traffic, park the car.

2. Continue run the engine, do not stop the engine. Because when the engine is stopped the water pump will also stop working and the flow of the coolant from the reservoir into the engine will also stop. The coolant will stop circulating around the engine but continues to receive heat coming from the engine and will continue to boil in that condition thus overheating will not be resolved.

3. Open the hood so that the air will help to cool down the engine.

4.After the temperature indicated on the temperature gauge goes down then stop the engine.

5. Request the car dealer for any assistance.

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