Seat Exhausts, Catalytic Convertors & Lambda Sensors

If the catalyst fails, your Seat will probably fail the MOT emissions test.

A faulty Seat oxygen sensor (Lambda sensor) can also cause damage to the Seat catalytic converter due to an increase in unburnt fuel in the exhaust gases

The Seat exhaust parts include: - Exhaust manifold, Header, Oxygen Sensor, Catalytic Convertor, Back Box (Muffler), Exhaust Pipe, Tail Pipe and a range of Seat exhaust fittings

Seat oxygen sensor (Seat Lambda sensor) failure usually occurs because of a build up of combustion mineral particles on the sensing element leading to the Seat engine running fuel rich

Do you need a replacement Seat exhaust, Catalyst or Sensor?
Use our form to request a Seat Exhaust quote to fit the sections you need

Seat catalytic converter failure can be hard to diagnose as the catalyst becomes clogged with exhaust particle contamination or the Seat catalyst is poisoned by fuel contaminants

Seat exhaust corrosion problems are usually easy to diagnose as a dramatic increase in engine noise as one of the Seat exhaust sections or joints corrodes from the inside to form a hole

Longton Seat: Exhaust Repairs

Longton Exhaust Repairs: Seat Exhaust System Fitting

Seat Timing Belt - Seat Cambelt
Seat Timing Belts replaced as part of a planned Seat service or if the Timing Belt on your Seat has snapped then a full engine inspection for valve & piston damage

Seat Electrical Components
Seat electrical faults repaired using Seat OEM components - Seat sensors checked e.g. Lambda sensors, air flow meters etc

Seat Brakes
Routine Seat servicing, replacement Seat brake pads & discs fitted, Seat hydraulic pipework and joints inspected, repaired or replaced for a complete braking system overhaul

Seat Gearboxes
Seat Manual & Automatic gearbox servicing & repair - Fitting a new or reconditioned Seat gearbox

Seat Tyres
Steel wheels, alloy wheels and tyres repaired and replaced with cheap tyres, run-flat tyres or low profile & performance tyres depending upon your budget and driving requirements. Part-Worn tyres may be available for your Seat model

Seat Starter Motors
Replacement Seat Starter motors installed

Seat Paint Resprays
Paint resprays for minor scratch damage to the Seat paint surface or coating; Custom paintwork to make your Seat different using metallic paints, pearlescent pigments or company colours.

Seat Suspension System
Seat replacement shock absorbers & springs fitted for front or rear suspension problems, broken springs. Custom suspension systems installed, lowering springs fitted

Seat Clutches
Seat clutch repairs Longton - Checking for leaks and repairing-replacing the clutch master-slave cylinder and fitting a new Seat Clutch kit

Seat Exhausts
Seat Engine manifolds, Front box, Back box, catalytic converter and exhaust pipes for Seat Exhausts fitted & welded

Seat Cooling System
Replacement Seat radiators fitted, cooling system pipework inspected for leaks and cooling fluid replaced to keep your Seat engine at its optimal operating temperature

Seat Engines
Seat Engine repairs, cylinder head skimming, valves & pistons

Seat Fuel Pumps
Often replaced at a milestone service if the fuel pump is operated by the Timing belt

Seat Alternators
Replacement Seat alternators fitted

Seat Body Panels
Replacement Seat panels fitted & sprayed to match - Light Seat Panel damage repairs

Seat EGR Valves
Replacement Seat EGR valves - ensure the exhaust gas recirculation system is functioning correctly on your Seat - The EGR valve helps your Seat burn fuel more efficiently by recirculating a portion the exhaust gas through combustion chamber and helps reduce Seat engine emissions; a broke or sticking EGR valve can be the cause of an MOT failure due to excessive emissions

Seat Oil Change & Filters Replaced
Seat Air filters, pollen filters; oil filter & fuel filter replaced, engine oil changed - Multigrade or Synthetic oils

Seat Autoelectrics
Seat electrical faults diagnosed - OBD fault finding - Seat engine fault codes checked & service lights reset - ECU problems, key coding and CANBUS systems checked

Seat Performance Spares
OEM Seat parts fitted or replaced with alternative performance parts

Seat Service - Seat Braking Systems - Hydrauic Brake Maintenance

The hydraulic brake fluid is a non-compressible liquid so braking pressure is transferred via the brake pipes to the wheels and operates a slave cylinder piston that forces the brake pads against a brake drum or brake disc

Modern Seat braking systems use hydraulic links to transfer stopping power

Braking increases hydraulic brake fluid pressure

The enforced contact between the brake pads and brake drum or brake disc increases friction to slow down or stop the vehicle

The brake pedal controls the Master Cylinder (a fluid filled hydraulic piston) that transfers stopping power to the brakes

Seat brakes can last for thousand of miles depending on use and regular service

Longton Seat Brake Repairs

Drum Brakes, if fitted, are usually found on Seat rear wheels

In hydraulic braking systems, braking pressure operates a slave cylinder

Seat disc brakes have a pair of high friction brake pads mounted either side of a brake disc

Drum Brakes are an older system than Seat disc brakes and use two half moon shaped brake shoes that move outwards during use to apply a frictional stopping force against the inside of a brake drum

Hydraulic braking pressure forces a brake calliper to press the brake pads against the disc to apply the necessary stopping force

Seat Brake Servicing - Seat Brake Discs and Pads

Seat brake discs will wear and need replacing eventually and should be inspected for pitting

The brake pads on your Seat should wear first

Seat Brakes will safely function correctly without the need for replacement for many thousands of miles

if the Seat brakes overheat and are allowed to cool with pressure still applied for m the brake pads/shoes then it is possible for the disc to warp.

If the Seat brake discs warp then they should be replaced immediately

Seat Brake Servicing & Inspection Longton

Auxiliary handbrake shoes where appropriate

Hydraulic brake pipe fittings and joints for corrosion and leaking

Replace Brake Fluid if necessary

Correct brake pad movement and level of wear

Adjust handbrake

Top Up Brake and Clutch Fluid Levels or

Handbrake function and travel

Brake calliper operation

And carry out the following maintenance of your Seat braking system:-

ABS warning light operation

Wheel cylinder condition

Brake drum condition

Lubricate Hand Brake Linkages

Brake pipe Condition

General brake disc condition

Hand brake linkage condition

Clean and remove brake dust and loose corrosion and dirt from drums

Seat Steering System

The tyre tread is rapidly removed from the inner or outer tyre edge of your front tyres

The tyres will need to be replaced much sooner than necessary until the steering rack is adjusted to bring your wheels into correct alignment

Common symptoms of Seat steering alignment problems include:-
Vehicle Drift - Your Seat tends to pull left or right when travelling in a straight line
Modern Power steering and Drive by Wire Systems do not have the same mechanical linkages between the steering column and drive wheels making it difficult to 'feel' how the steering is performing.

One of the first signs of a potential problem with your Seat steering system is uneven tyre wear

Your Seat steering inspection can include:-

Steering Linkages for wear and corrosion

Correct wheel nut torque to manufacturer's recommendations

Wheel Bearings for wear - play or noise

Correct Tyre Pressure - inc Spare

Steering Rack Gaiter condition

Seat Tyre wear and wheel alignment

Power Steering Reservoir Levels and Top Up

Tyre Condition - inc Spare

Correct wheel balance, including spare

Steering Condition

Seat Brake Servicing: Brake Discs, Pads & Hydraulics

The hydraulic brake fluid is a non-compressible liquid so braking pressure is transferred via the brake pipes to the wheels and operates a slave cylinder piston that forces the brake pads against a brake drum or brake disc.

The brake pedal is attached the Master Cylinder; a fluid filled hydraulic piston.

Brakes can last for thousand of miles depending on use and regular service.

Modern braking systems use hydraulic links to transfer stopping power.

The enforced contact between the brake pads and brake drum or brake disc increases friction to slow down or stop the vehicle.

Braking increases hydraulic brake fluid pressure.

Seat Replacement Timing Belt or Cambelt Longton

Timing belts must be replaced at a specified manufacturer's interval. The timing belt should also be inspected regularly and replaced immediately if there is any evidence of cracking or fraying cuts or excessive wear

Often it is prudent to replace a combination of items associated with the timing system. Most of the needed Seat parts can be obtained as timing kits containing the appropriate timing components; such as: Seat timing belt
timing belt tensioners
timing belt tensioner idler roller
front lower crank shaft seal
water pump gasket

High compression diesel engines are normally interference engines

The Timing Belt synchronizes the camshaft to the crankshaft position ensuring the valves open and close at the correct time in relation to the piston. Some vehicles use a cam chain in place of the belt or a timing gear system instead

The toothed belt connecting the engine crankshaft to the camshaft is known as the Cambelt or Timing belt

Generally Seat belts should be replaced every 60,000 miles or less. So, if you have just bought a secondhand Seat that has 40,000 to 80,000 miles then it is important to know if the timing belt has been replaced or needs replacing. Check the Seat Owner's manual for your model for the recommended changing frequency

Since Seat Timing Belts are hidden inside the engine they tend to be forgotten when purchasing a used Seat

If the timing belt snaps it will most probably cause serious engine damage. The camshaft stops turning with some of the valves left in the open position. In a Free Running Engine there is enough clearance between a fully open valve and the piston head to avoid serious damage. In an Interference Engine there is no clearance and the engine relies upon accurate timing to keep the valves and piston head separated. With a broken timing belt; the inertia helps the crankshaft to rotate freely forcing the pistons to strike the open valves resulting in damaged valves, pistons, and possibly even damage to the cylinder head

Seat Fuel Injectors - Fuel Injection

EFI - Electronic Fuel Injection
The Seat fuel injection system is controlled by a mini-computer or Electronic Control Unit (ECU) that assimilates data from a series of temperature sensors and oxygen or lambda sensors providing feedback to help optimise fuel efficiency and power under a variety of conditions

Seat Re-Mapping Longton
The Seat ECU can be replaced with a programmable ECU or re-mapped to electronically alter the engine performance characteristics

Seat Engine Mapping
The Seat ECU controlling engine performance is pre-programmed with software containing embedded data on engine performance for different combinations of engine speed and acceleration

LPG Petrol or Diesel Metering
Fuel Injection systems have replaced carburetors for the accurate mixing and delivering of petrol, lpg or diesel fuel in modern Seat vehicles

Seat Fuel Injection
Fuel injection systems mix fuel with just the right amount of air for optimal combustion & energy release in an internal combustion engine

Seat Maintenance - Oil & Filter Change Longton

Oil & Filter Change
A new Seat oil filter and oil change shouldn't need a specialist Seat engineer and is minimal compared to the cost of an Engine Rebuild; with regular maintenance and routine servicing working out cheaper than disaster recover when your Seat engine fails

Anti Oxidants
Preventing internal engine oxidation in your Seat motor is the job of sacrificial anti-oxidants present in the lubricating oil; Anti oxidants are sacrificed to protect your engine and will eventually be depleted making it necessary to change your oil regularly

Oil Composition
Engine Lubricating Oil is composed of hundreds of chemicals; some can interact chemically, polymerise, oxidise and break down with the extreme conditions of temperature & shear forces pulling the oil molecules apart in your Seat engine thus, changing the lubrication properties.

Synthetic Oil Change - Longton
Modern synthetic oils can last longer than old petroleum based multigrades because they are more inert with a laboratory designed molecular structure and fewer natural catalytic impurities that increase oil breakdown compared to the cheaper engine oils

Oil Change Masterclass
Keep a small amount of the engine oil used in your next oil change in a sealed container; then when you check your oil level with the dipstick you can compare the lubricity or lubricating properties of the oil against your fresh oil:- If the oil on the dipstick seems thin compared to your reference oil sample; it may be time to get an oil change to keep your Seat running smoothly

Oil Change Frequency
The mechanics rule of thumb with traditional multigrade engine oils used to be "change the oil every 3000 miles" but many vehicle manufacturers indicate 5000 to 7000 miles. Initially, follow the Seat recommended oil change guidelines to ensure you validate your warranty.

Moisture Scavengers - Detergents - Acidity Regulators
Moisture scavengers, detergents and acidity regulators prevent all kinds of contaminants degrading and abrading the internal moving surfaces of your Seat engine minimising the effects that water, particles, and fuel combustion residus can have on Seat performance
Once they have absorbed the maximum amount of water and other contaminants; the risk of corrosion and failure in your in your Seat engine increases

Seat Clutch Operation

The Seat clutch disc is, not surprisingly, a disc with each side covered in a high friction material. It is designed to engage with the high-friction surfaces of the pressure plate and flywheel. It is also designed to transmit power to theSeat transmission system

Seat Clutch failure often occurs when one or more of the high friction surface materials wears out on the disc. Even when the pressure plate is engaged and a clamping force is applied, there is no longer sufficient friction to transmit power without the clutch slipping. Normally the Seat clutch disc and pressure plate are replaced. Replacing the Seat Clutch is a major operation and it is sometimes advisable to replace a number of items, often supplied as a Seat Clutch kit:-
Seat clutch disc
pressure plate
release bearing
pilot bearing - bushing (when required)
internal Seat clutch slave cylinder

The pressure plate comprises heavy-duty release springs, a metal pressure ring acting as a high friction surface to interact with the clutch disc, a thrust ring (or thrust fingers) for the release bearing, and release levers

When the clutch is dis-engaged the clamping force is removed so the clutch disc spins with the flywheel and no power is transmitted

The centre of the clutch disc has a spline pattern that matches splines on the power input shaft of the transmission system

Engaging the clutch forces the clutch against the flywheel transmitting power from the crankshaft to the transmission shaft

Disengaging the clutch acts on heavy-duty release springs to isolate the pressure plate so that the disc is no longer pressed against the flywheel

Seat Replacement Exhausts Longton

The Seat exhaust system allows poisonous gases from the fuel combustionto vent into the atmoshpere away from the driver and cabin

Corroded exhaust pipes allow fumes and noise to escape; increasing the risk of poisonous carbon monoxide entering the cabin and significantly increasing noise making detection an easy task

The exhaust pipework helps muffle and deaden the noise from the fuel combustion process

Explosions from the instantaneous ignition of the compressed fuel and air igniting in the combustion chamber creat a lot of noise that needs to be silenced in the urban environment