1ZZ-FE Engine High Oil Consumption from Piston Ring Sticking
SeriousEnginePre-facelift 140 bhp Celicas with the 1.8-litre 1ZZ-FE engine suffer from heavy oil consumption due to undersized oil return holes in the piston skirts and premature carbon sticking of the oil control rings. As oil consumption escalates beyond one litre per 1,000 miles, the engine runs low on lubricant between routine services, causing cylinder bore scoring and crankshaft bearing starvation. Toyota replaced affected short blocks under warranty in the UK for up to 7 years.
Rapid drop in engine oil level on the dipstick within a few hundred miles of driving, Puff of blue-grey smoke from exhaust tailpipe on cold starts or sudden acceleration, Dark, oily sooty residue deposited on the rear bumper valence around the exhaust tip, Engine ticking or knocking noise under acceleration caused by worn connecting rod bearings
- Check engine oil level on the dipstick prior to cold starting to verify it is topped up
- Rev the warm engine to 4,000 rpm while an assistant observes the exhaust for blue smoke haze
- Review service paperwork to confirm if the engine block was replaced under Toyota goodwill