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Nissan that pings

Nissan Nissan Advice Nissan Bluebird Nissan Bluebird Advice Nissan Bluebird 1985
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OUR 1985 well-kept Nissan Bluebird has 129,000km on the clock. It has the newer 2.0-litre twin-spark motor, but is not an unleaded model. I have advanced the timing slightly, but it still pings intermittently even on LRP with an additive. It also uses a lot of oil, but doesn't leak or blow clouds of smoke constantly. Any thoughts?

ADVANCING the timing will exacerbate any pinging. Retard the ignition to eliminate it. LRP has an octane rating of 96, lower than the 98 super the Nissan would have been developed for, so try a 98 fuel. You don't need to add anything to LRP because it already contains upper-cylinder lubricant. On oil consumption, try to identify when the smoke appears. Is it when you start, accelerate, decelerate, or travel at a constant speed? If it's the rings, I would expect smoke to be there most of the time. Otherwise, check valve-stem seals or valve guides for wear.

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