North East England

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Car Repair, Sales and Maintenenace Services North East England

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Cracked Bumper

Mobile Car Body Repairs

Bumper & body repairs at your home to repair minor scratches and scuffs

NE12:Mobile Car Repairs Killingworth

Mobile Mechanic

Mobile Mechanic Shiremoor

Home start, car servicing & mobile mechanic repairs for most vehicles

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Diagnostics for North Shields

Car electrical problems diagnosed & electrical system faults corrected

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Tyres repaired & worn tyres replaced with standard or performance tyres

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Used Cars Bought and Sold in West Moor

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Audi Newcastle

Audi Mechanics Based in Newcastle for Audi Diagnostics, Servicing & Repairs

NE1:Audi Specialist Newcastle

Car Repairs

North East Car Maintenance and Repair: Clutch Replacement

Clutch Slipping
Probably the most common problem with a modern car clutch is that the high friction surface wears out; especially cars where the clutch is regularyly "slipped" in city centre traffic or on the bypass around Newcastle, Gateshead or Sunderland. The high friction surface on a clutch plate s similar to the pads used on disc or drum brakes and will eventually wear. Once this happens the plates will begin to slip as the car accelerates from stationary

Clutch Sticking
There can be a number of causes for a sticking clutch: If there is a clutch cable fitted and it has stretched or badly adjusted it may not fully disengage the clutch friction plates. A leaking clutch master or slave cylinder, with entrained air can cause the clutch pedal to "pop" to the floor without acting on the clutch. A new cylinder may need to be fitted and hydraulic fluid replaced

North East Parts: Drive Belts

Timing Belts
A timing belt is usually protected within the engine cover and provides a flexible linkage between the engine crankshaft and the camshaft. The timing belt (cambelt) is toothed to help maintain synchronistation for valve opening and prevent the belt slipping which may cause engine damage. Some cars use a long-lasting timing cahin in place of a rubber polymer belt

Serpentine Belts
A Sepentine drive belt is usually the visible belt when you look under the bonnet and usually operate the air-conditioning compressor, alternator, power steering pump and water pump

V Belts - Fan Belts
A v-belt is a polymer belt with a v-shaped profile that helps drive certain accessory components. Unlike the serpentine belt that can be used for several components; a v-belt generally operates via a pair of pulley wheels to drive a single accesorry such as the cooling fan

Common Car Problems To Be Repaired

Faulty Oxygen Sensors - Lambda Sensors
The oxygen sensor is a vital component in modern engine management systems. It provides feedback on the amount of oxygen within the exhaust gases exiting the engine and helps the ECU adjust the fuel air mix to ensure maximum efficiency and minimise soot and harmful exhaust gases

Catalytic Convertors on Diesel and Petrol Engines
Regulation require new cars to have a correctly functioning catalytic convertor. When the convertor unit reaches the correct operating temperature it begins to help unburnt fuel hydrocarbons, carbon soot, sulphur containing compounds, nitrogen containing compounds to further react so that the exiting combustion gases release less harmful chemicals with fewer soot and complex hydrocarbon polyaromatic compounds (PAH)

Air Flow Sensor - Mass Air Flow Sensor (Hot Wire and Vein Types)
The overall amount of air and hence oxygen that is delivered to the engine in an electronic fuel ignition (EFI) system determines how much fuel can be added to the chamber for combustion and hence engine power. The total amount of oxygen varies with air density which is dependant upon atmospheric pressure, moisture content, ambient temperature and use of turbo or forced air induction system. The sensor can also help compensate for dirty air filters by reducing the amount of fuel delivered

Spark Plugs in Petrol and Hybrid Engines
To minimise exhaust gas particulates and unburnt fuel you need a stoichiometric/clean fuel burn; faulty or badly adjusted spark plugs can cause misfiring, wasted fuel (a major cost with todays petrol prices here in the UK) and will put additional pressure on the catalytic convertor to clean up the mess left by unburnt fuel, essentially shortening its life so its worth checking or changing them

How Long Do Spark Plugs Last - How Often Do They Need Changing
Every time a spark plug sparks in a high oxygen atmosphere it strips a few atoms from the electrode. The better quality platinum/iridium electrode plugs can last up to about 50,000 to 60,000 miles while cheap copper plugs may be worth changing every year or two depending on annual mileage. Some of the symptoms to look for with worn plugs: Lower miles per gallon, poor starting (especially in cold weather), poor idling, engine stalls easily. If you remove a plug with a plug socket and take a look at the electrode surface you'll get a fair idea about the state of your spark plugs

Ignition Coil Problems
Related to spark plug wear and tear are a series of issues with the ignition coils that transfer the electrical power to the spark plugs. Coils can fail or short circuit which prevents the associated plug from firing or it can misfire; as you might expect, fuel efficiency (MPG), cold engine start and idling can all be affected. Often it's a case of getting an autelectrician to run a diagnostic test to see if any of the ignition coils are faulty

Emission Problems and Exhaust Gas Recirculation (EGR) Failure
The EGR vlave feeds a small amount of the exhaust gas back into the piston chamber on the next pass to recombust any unburnt carbo or hydrocarbon compounds and help reduce emissions

How Long Does An EGR Valve Last
It really depends on the make/model of car and how it is driven: short trips to work and back or shopping are more likely to cause sooty deposits than long motorway miles where the engine warms up and runs efficiently at optimal revs. It's not uncommon for EGR valves to get clogged with sooty deposits and may need to be cleaned every 30,000 miles or so for optimal efficiency or replaced if emission levels become a problem. Typically an EGR valve can last from 80,000 to 130,000 miles or more but may need cleaning every few years

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