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Non turbo and powersteering model
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Posted on Jan 02, 2017
SOURCE: timing on a 1991 nissan 300zx
There is no means of setting the timing if you are referring to a conventional timing light. The engine is designed with sensors that sense the angle of the camshafts in relationship to the crankshaft and whether it is on the intake or exhaust stroke on the #1 cylinder. This design is actually a little more complex than that because it has variable valve timing which means that the angle in which the camshafts open and close the valves, change with RPM's This give the engine the best of both worlds. It's like have an engine with cams designed for torque at low RPM and a set of cams designed for HP with a free breathing quick revving engine you would have on a race course. The ECM is constantly changing the timing and injector pulse width based on many sources of input, from, the O2 sensor, air flow, air temp, coolant temp, fuel pressure, RPM's and a host of other inputs.
SO>>>>>>>>>>>> in a manner of speaking, unless you are making reference to setting up the timing chain, everything else is under control by the ECM and related components.
Posted on Mar 25, 2009
SOURCE: what are the valve clearances
I have Toyota Corolla EE80 2E engine with 12 valves. I recently top overhaul but the engine is not running in perfect condition. The engine rpm goes up and down (engine shaky). I set the rpm around 1200, if i set it lower than that the engine will stop. I check the engine timing with both the cam and crank on the correct mark. Sounds like the carburetor failure but i had service it but still the same. If i turn the distributor to the right (******) the engine rpm drop, than i turn it to the left (advance) but the rpm drop too, as i know the engine rpm should raise high and could hear the pinking sound from the valves if the the engine accelerate. For your info, i bought the cylinder head from someone who previously general overhaul his engine about 6 months ago. He dismantle his engine because of con rod problem. I just fix the cylinder head to my engine without grinding and adjusting the valves because it had been grind and adjusted 6 months ago. I check the spark plugs but look all black. I pull the plug cable one by one during the running it sounds all ok. Now i wonder what is actually wrong with the engine? Do i need to adjust the valve clearance too? What is the valve clearance for both exhaust and inlet, hot and cold? If i do the valve adjustment and yet still the problem, what is next?
Posted on Jun 07, 2011
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