Toyota Corona FAQs

Check out real-world situations relating to the Toyota Corona here, particularly what our experts have to say about them.

• Stalling corona

  There were reports from Western Australia of a build-up of deposits on the spark plugs of engines running on LRP and which were driven only short distances. The deposit was blamed for poor starting and running, so it's worth checking your plugs for abnormal build-up of deposits. Clean the plugs before reinstalling them in the engine. If there is an unusual build-up that could be causing the problem, consider changing to a higher heat range spark plug that would help burn off the deposits. While there is a chance the problem is caused by the LRP you use, it's more likely to be a problem with the engine itself, so check the carburettor to ensure the automatic choke is operating correctly, and check the ignition timing, points and set them to specification. Also check for signs of intake manifold leakage.

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• Additives work best

  CHECK the engine is a Toyota engine because Toyota was fitting the Holden 1.9-litre overhead-valve four-cylinder engine to the Corona at that time. The capacity you quote suggests yours has the ``misfire'' four in it. If it's a Holden engine the compression ratio was 8.7:1, but it's likely to be less than that now. If it runs well I'd continue to use unleaded with an additive.

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• Losing lead

  ACCORDING to the government guide, your car cannot run on unleaded petrol without an additive, so the best advice is to run it on regular, or premium unleaded if you can afford it, and add a commercial lead replacement additive available from your servo.

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