What are the problems with the Nissan QG18DE?
There is a problem with the idle valve gasket. Eventually, antifreeze starts leaking directly into the engine control unit. Replacement of the gasket fixes the issue.
Is the Nissan QG18DE 1.8 liter engine hydraulic?
But these 1.8 and 1.6-liter engines are very similar. The QG18DE uses the same variable valve timing system (CVTC) on the same camshaft, timing chain, variable geometry intake manifold with valves, cylinder head, etc. There are no hydraulic tappets in the engine also (every 60,000 miles, please, visit service for valve gap/clearance adjustments).
What does the ECM do on a Nissan QG18DE?
The QG18DE engine uses the ECCS (Electronic Concentrated engine Control System). This system controls the fuel injection, ignition timing and idle RPM as one single control unit. The amount of fuel injected from the fuel injector is determined by the engine ECM.
What are the intake and exhaust valves on a Nissan QG18DE?
Intake valves duration is 236° and exhaust valves duration is 222° for engines with valve timing control system and 222°/222°, respectively for engines without NVCTS. The QG18DE does not have hydraulic lifters, so special shims are used to adjust the valve clearance.
There is a problem with the idle valve gasket. Eventually, antifreeze starts leaking directly into the engine control unit. Replacement of the gasket fixes the issue.
The QG18DE engine uses the ECCS (Electronic Concentrated engine Control System). This system controls the fuel injection, ignition timing and idle RPM as one single control unit. The amount of fuel injected from the fuel injector is determined by the engine ECM.
But these 1.8 and 1.6-liter engines are very similar. The QG18DE uses the same variable valve timing system (CVTC) on the same camshaft, timing chain, variable geometry intake manifold with valves, cylinder head, etc. There are no hydraulic tappets in the engine also (every 60,000 miles, please, visit service for valve gap/clearance adjustments).
Intake valves duration is 236° and exhaust valves duration is 222° for engines with valve timing control system and 222°/222°, respectively for engines without NVCTS. The QG18DE does not have hydraulic lifters, so special shims are used to adjust the valve clearance.
Are there hydraulic tappets in the Nissan QG18DE?
The QG18DE uses the same variable valve timing system (CVTC) on the same camshaft, timing chain, variable geometry intake manifold with valves, cylinder head, etc. There are no hydraulic tappets in the engine also (every 60,000 miles, please, visit service for valve gap/clearance adjustments).
Are there any problems with the 2004 Sentra?
The top category of complaints regarding the 2004 Sentra include the engine category, with the highest number of complaints involving the engine as well.