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Monthly Archives: April 2018

Fuel Injector Burning

1. Long time idling operation

Due to the diesel engine keeps running slowly for a long time, the temperature in the cylinder is low, the fuel combustion is not sufficient, the combustion chamber and fuel injection nozzle are easy to form carbon deposition. So it leads to the deterioration of working conditions for fuel injection nozzle. Especially in winter, it is even more serious under the condition of cold climate. Because the combustion chamber has carbon deposition, heat dissipation is slow, which may cause spray orifice obstruction of the injection nozzle and the oil drip phenomenon may happen. The fuel stays in the nozzle head for a long time, the local high temperature will make the nozzle and thermal insulation jacket burned.

2. The fuel is not clean

Due to there are small particles of impurities in the fuel, the needle valve and needle valve body of the fuel injector will wear. It is possible that the needle valve will be stuck in the needle valve body.Because of needle valve lag, the fuel can’t be periodically, quantitatively and quickly sprayed into the combustion chamber, the oil drip phenomenon will appear, which may cause the fuel atomization is not good and the combustion speed is reduced. Due to the burning time of the nozzle is extended, which will make the nozzle and the thermal insulation jacket burned. When such fault occurs, there will be black smoke and chattering phenomenon.

3. Fuel injection time is too late

The fuel injection advance angle is too small which may lead to a late fuel injection time. If it can’t be adjusted for a long time, the local high temperature will make the nozzle and thermal insulation jacket burned.

4. Improper assembly

If the nozzle insulation sheath is installed without cleaning, there will be a gap between the fuel injection nozzle and the insulation sheath. The gas enters into the gap, the heat insulation and cooling effect is reduced, which will cause the fuel injection nozzle and the insulation sheath burned. If the thermal insulation sheath is too tight, the nozzle will generate additional stress. Under the combined action of heat alternating load and high pressure of fuel injection, the nozzle will be broken and the needle valve will be stuck. In addition, if the insulation sheath can’t get installed during maintenance, the nozzle extends into the combustion chamber more than 4mm above the cylinder head bottom, the heat absorbed by the injection nozzle will increase, which make the nozzle melted.

5. Improper use of the genset

If it lacks of coolant liquid while the unit is at work, the combustion chamber can’t be in good state of cooling, which will lead to the high temperature. This is also an important reason to cause the burning of fuel injection nozzle.

Lead Acid Batteries

Lead acid car batteries are energy storing devices made up of lead and lead dioxide plates. These plates are submerged into an electrolyte solution. The percentage of water is 65% and sulphuric acid contributes 35% to this solution. When the battery is used to start the car, it gets discharged. The sulphuric acid in the electrolyte solution gets depleted leaving a higher proportion of water. The sulfate is returned to the acid during the charging process. The battery provides high current required by the starter motor to crank the engine of the car. Once the engine is started, the battery is again recharged by the engine driven charging system. In this process, the alternator takes necessary energy from the rotation of engine through a belt to charge up the battery. When the engine is running, the alternator generates electricity for the electrical equipment of the car.

What makes a battery weak?

When the car is exposed to direct sunlight in summers for longer periods of time, it accelerates the process of corrosion and evaporates the electrolyte. This reduces the life of a battery making it weaker. So, avoid getting your car heated by sunlight by parking in a suitable shade.

A battery must be fitted properly to avoid any sort of vibrations. These vibrations over the time shake the plates around which in turn make the internal connections lose. As a result, the battery would not get properly charged.

Once you start the car, make sure to drive it for enough time for the battery to get recharged again. The alternator takes time to recharge the battery after it has released its energy while starting the engine. Otherwise, the battery will stay undercharged which is not sufficient to provide high current to the starting motor.

Keeping the headlights or music system on while the engine is shut down drains the battery over the time. Avoid plugging in a charger for a longer period of times to prevent the battery from discharging.

Corrosion on battery terminals is as harmful to the battery as anything else. Always clean the battery terminals carefully once or twice in a month. Make sure to wear gloves and eye protection. The white powder on terminals is toxic and should not be allowed to come in contact with the skin.

Signs that indicate battery replacement:

There are a couple of signs that may indicate your battery is getting weak and needs a replacement.

  • The bright headlights of the car become slightly dim when the engine is turned off.
  • The starter motor turns slowly when you start the car due to the low current provided by the battery.

There are a few visual signs that indicate the battery needs a replacement.

  • An internal short circuit or overcharging leads to a swollen battery. If you see signs of bulging anywhere around the battery, replace it.
  • Examine the battery case carefully for any damage to the battery case.

How to start an engine with a weak battery?

It is not recommended to use a weak battery. However, in an emergency case, jumper cables can be used when you are stuck during your trip along the roadside. Always keep a set of jumper cables in your car if you think the battery is not in a supreme condition. Jumper cables let you jump start your vehicle with the help of another car. Although it is a very simple technique but safety measures must be taken to avoid any danger. Following steps will guide you to jump-start the vehicle:

  • Make sure both batteries have the same voltage rating i.e. 12 V
  • Turn off the ignition switch after parking it close enough to the other car in neutral position.
  • Never jump a frozen battery. It can easily explode.
  • Wear rubber gloves and safety glasses.
  • Carefully identify and connect the positive terminals of both batteries to each other.
  • Make sure the other end does not touch car’s body to avoid any dangerous spark.
  • Clamp the negative cable to the negative terminal of the good battery.
  • Connect the other end of the negative cable to a metal part of the car with a weak battery.
  • Finally the start the car with the good battery.
  • Give it 5-7 minutes to charge the weak battery.
  • Now start the ignition of the car with a weak battery.
  • Carefully remove the cables in reverse order. Remove the negative cables first followed by removing the positive cable from the car with the good battery. In the end, remove the positive cable from the car with a weak battery.

How to check battery’s health?

For proper maintenance of battery, schedule once a month to check the status of the battery. Nowadays there are tools that can help measure the present condition of the battery. Following are the most commonly used tools for this purpose:

Battery load tester:

Battery load tester is used to check the voltage rating of the running battery. It has a display meter with voltage readings up to 16V along with the battery health indicator. It has positive and negative probes. Inside, there is a high current capacity coil which provides the necessary load with a toggle switch. Battery voltage can be tested easily by following these steps:

  • Turn off the car engine.
  • Connect the positive probe of load tester with the positive terminal of the battery.
  • Similarly, connect the negative probe with the negative terminal.
  • Make sure both probes are properly connected with the battery terminals.
  • The meter will show a voltage reading in accordance with the health of the battery.
  • Now, turn on the load toggle switch for 05-07 seconds to measure the battery voltage on load.
  • A healthy battery ideally shows 12.5 volts.
  • If the meter needle deflects anywhere near the “weak” indication, immediately replace the battery.
  • Safely remove the probes in reverse order.

Hydrometer:

The hydrometer is another tool to measure the battery health. It measures the specific gravity of electrolyte but can only be used on batteries with removable caps. Hydrometers usually have a built-in thermometer. Follow these easy steps to measure the remaining battery life:

  • Start with removing caps from the top of the battery.
  • Dip the tip of the hydrometer in the first cell of the battery.
  • Squeeze and release it from behind to let the electrolyte enter into the cylinder of the hydrometer.
  • Read the specific gravity of electrolyte as indicated.
  • Note the reading for all cells one by one.
  • Make a comparison of readings with those one given on hydrometer.
  • Usually, readings between 1.265 and 1.299 indicate towards a charged battery. Any reading under this bracket show signs of a weak battery.
  • Another method to examine battery health is to use a multimeter. This process is similar to the one we used for the battery load tester.

How to replace a battery?

A car battery can be easily replaced at home without any complication by following these simple steps:

Removing the old battery:

  • Start with removing negative terminal of battery usually marked as black or with (-) symbol to avoid any arcing with the wrench.
  • Disconnect the positive terminal usually marked as red or with (+) symbol.
  • Remove the “hold down clamp” of battery
  • Batteries are heavy in weight so lift it up carefully.
  • Clean the battery tray if it is corroded.

Connecting new battery:

  • Carefully lift in the new battery in its position.
  • Properly connect the “hold down clamp” first.
  • Connect the battery terminals in reverse order by connecting the positive terminal first.
  • Connect the negative terminal of the battery.
  • Make sure the connections are not loose.
  • Battery must be fixed properly to avoid any vibrations.
  • Terminals must be in a clean condition.
  • Add some petroleum jelly on both terminals as it reduces the process of corrosion.

The old battery can be sold to a battery shop from where you have purchased the new one. These car batteries are also recycled to prevent dangerous chemicals from getting into the atmosphere. Old lead plates can also be recycled into various other products.

Cleaning Latte Stains

The new consumer is getting all kinds of fancy coffee drinks with all kinds of ingredients and they are much tougher to clean. 60% of all stains in the cars are coffee stains of some type. If a carpet has a coffee stain, pure black coffee. Then here is what to do. Also works for Soda (most). Moisten the area with Folex or some spot remover wipe with warm moist rag and you are completed. If not perfect try this step a few times and then dry out the mat or area where stain was. Use a carpet brush to re-align the carpet fabric the proper direction. Now through in some foam, or milk, half and half or any possible combination and your job is a little more complex. And those Mocha frappachinos with whip cream and caramel sprinkled on top. Well now you have the stain from Hell. If there were a hell, for a detailer it would be a lifetime of cleaning up those spills from mini-vans.

For these types of spills here is what you do. Scrape any total excess build up with a plastic razor blade. Yuk, Then use Folex or your favorite spot remover product. We like Folex available at any janitorial store, great stuff and 20 years of good service to our team. Then if you are still frustrated and challenged try a foam type cleaner like spray n’ wash and wipe. Then you will be left with a horrible and stubborn white ring for the Latte Scenario. Use a carpet brush on the carpet and a netted wax pad on fabric seats. Saddle Soap then Orange Bottled Lexol or try Leatherique Product on Leather seats;

Mobile Valeting Service

Mobile valeting services offer the customer almost a complete car care service. Many companies and websites are available, who provide services like basic car wash to whole car professional works, at your place, nowadays. Some companies provide a wide variety of services other than servicing, like interior works, professional advices, etc. Not only cars, vehicles like tractors, agricultural vehicles, caravans, etc. can also be serviced by these facilities.

Think how much effort you should put to completely clean your car, if you are doing it all yourself. Firstly, you should clean all your seats, vacuum the fitted mats, shampoo wash the carpets, clean the mirror and glasses, water wash the exteriors, etc. and waste the whole day. Still you won’t get the best results. Of course, you can do something creative and more productive rather than wasting your precious time cleaning your car that is already messed up.

By booking a valeting service, you are calling for a van fully loaded with equipment and products to fulfill your demands for your vehicle, at your doorstep. All you need to do is search for the best service provider at your place, call the one you have chosen. Negotiate your need for the service to the expert and fix an appropriate time convenient for both. Then, wait for the van to reach your doorstep, to clean up the mess and clear your problems.

There are some places you cannot reach and some tasks you cannot accomplish when it comes to car servicing. Think how helpful it will be, if you get a chance to get all those done sitting in your place. Just give a call and tell your problem to a valetor, if you are too lazy to drive your car to a center.

A valetor’s van will be fully equipped with high quality tools and products to take care of your vehicle, at the best. They can provide you with best services anywhere, under any circumstances, as they will be travelling with electricity from generators and water, from water tanks, within the van.