Nissan Primera
1.6L naturally aspirated with timing chain. Proven and low-maintenance.
109 hp: well-behaved mid-sizer
The P12 was a decent car — solid, spacious, without any ambition.
Engine Weaknesses 3
The single-row timing chain of the QG16DE typically stretches from 70,000–150,000 km. Lower material quality compared to older double-row chains is cited as the cause.
Symptoms: Rough running, misfires, dancing rev needle; camshaft/crankshaft sensor fault codes; engine warning light
Older QG16DE engines show elevated oil consumption from around 100,000 km due to worn valve stem seals and piston rings. The shim-based valve train complicates diagnosis.
Symptoms: Blue smoke on cold start, dropping oil level, oily smell from exhaust
A dirty or faulty throttle body frequently causes idle fluctuation and rough running on the QG16DE, especially after engine start. A throttle body relearn procedure is required after cleaning.
Symptoms: Fluctuating idle speed, stumbling when pulling away or changing gear, engine stalls at no load