What kind of timing system does Nissan QG18DE have?
It has the same cylinder head with variable valve timing system N-VCT on intake camshaft and intake manifold with vortex valves. Every 60,000 miles of mileage (100,000 km) you should regulate the valves on your QG18DE, since it has no hydraulic lifters. This engine uses timing chain.
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).
Why is my Nissan QG18DE engine leaking coolant?
Besides, sometimes the coolant may start leaking through idle control valve gasket. And it is still more unpleasant, that the coolant gets right on ECU. To make the engine working properly, you will need to change idle control valve gasket.
Where does the Nissan QG engine come from?
The 1.8 L (1,769 cc) QG18DE was designed for Nissan by Aichi Machine Industry, Japan. It is manufactured both in Japan and the Mexican city of Aguascalientes. Bore and stroke is 80 mm × 88 mm (3.15 in × 3.46 in).
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.
What’s the ignition timing on a Nissan QG?
Ignition Timing: 9 degrees BTDC (can be altered +/- 2 degrees using CONSULT-II handheld diagnostic tester, e.g. blaZt). Knock Sensor – located on engine block; retards timing if pinging/detonation is detected.
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 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.