Spark knocking (preignition) noise from engine or exhaust assessment? We can fix that.

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Spark knocking (preignition) noise from engine or exhaust

If you're hearing a spark knocking (preignition) noise from your engine or exhaust My Auto Shop can get it sorted with a Engine Inspection. Simply leave as many details about the issue as you can and we will contact local MTA approved mechanics that are qualified to fix the underlying issue. We'll email you quotes for an inspection within 2 working days, and where possible provide an indication as to the likely underlying issue(s) and cost to fix. You can book directly on the My Auto Shop platform in minutes.

How a Engine Inspection works with My Auto Shop:

Our qualified mechanic will look to complete a thorough inspection of your vehicle's engine using the information or symptoms you have provided via the My Auto Shop platform. To complete this the mechanic will usually start by plugging into your OBDII port and completing a complete diagnostic scan. This will highlight any error or warning codes your vehicle has and will provide the mechanic with information they. need to fix your problem.

Depending on the symptoms the mechanic will take a good look at your vehicles:
- Drive & timing belts (cambelt, serpentine belts);
- Camshaft & crankshaft;
- Spark plugs; or
- Oil pan.

Before completing any repairs the mechanic will complete a quote and look for your approval.

When your hearing a spark knocking (preignition) noise from your engine or exhaust its often as a result of a:

  • Improper ignition timing
  • Lean air/fuel ratio
  • Overheating
  • Improper fuel octane level

Popular services linked to a Engine Inspection:

Fuel Injector Replacement

In order to get the right amount of fuel into your engine, your engine computer uses fuel injectors. These injectors are used to spray the exact right amount of fuel into the combustion chamber. They give the engine way more ability to be economical and efficient than old carburettors did.

Head gasket replacement

Nearly all modern engines have a separate engine block and head assembly. Despite not being connected, they have to be bolted together to house the valvetrain, camshaft, and manage air coming in and exhaust going out. The fluids that keep the camshaft and valves lubricated and cooled aren’t meant to get into the combustion chamber.

Distributor Rotor Button & Cap Replacement

Back in the old days, instead of an engine computer telling your spark plugs when to fire, it was the distributor. These were phased out over the 1990’s to 2000’s period. If you have a car that still uses a distributor then it must be a classic - good for you!

Radiator Top Hose Replacement

In order for your hot coolant to make it back to your radiator, it has to flow through a thick rubber hose. This is the radiator top hose. Over time, due to the pressure of the cooling system, the high heats from the coolant, and general wear and tear, the hose breaks down and will need to be replaced.

Why book with My Auto Shop?

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Trusted repairers

All workshops are MTA approved, so you know your car's in safe hands. All work is covered by our 6-month / 10,000km warranty.

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Never overpay

We provide transparent, upfront pricing and quotes for hundreds of services and repairs. Book with confidence.

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We make it easy

Get prices and book online 24/7. On the day, we can even pick up and drop off your car. Easy as.

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