What does Lateing timing mean?

By late valve timing, that refers to the intake valve closing event occuring after the optimum point. Generally, the later in the combustion stroke it closes the less vacuum “signal” you’ll have in the intake at idle.

What does it mean to adjust timing?

To adjust your timing, all you need to do is turn the distributor housing one direction or the other, depending on whether or not you want to advance or move back the timing. If the rotor turns clockwise, you’ll advance the timing by rotating the distributor counterclockwise, and vice versa.

Will advanced timing cause rich condition?

If you advance your timming you will have to richin the fuel mixture, if you retard the timming then you would have to lean out your carb for it to run best.

What is the Nissan GA14DE service life?

The Nissan GA14DE is reliable and durable. The engine has two timing chains, their service life is about 150,000 miles of mileage (200,000-250,000 km). The valve clearance needs to be adjusted every 30,000 miles of mileage (40,000-50,000 km).

What is the crankshaft for GA14DE engine supported by?

The crankshaft for GA14DE engine supported by five main bearings. The engine has an aluminum cylinder head with two chain-driven overhead camshafts and four valves per cylinder (16 valves in total). Intake valves are 29 mm in diameter, intake duration is 214 °, and the exhaust valves are 24 mm, exhaust duration is 214 °.

What is the bore size of a GMC Sierra GA14DE?

The GA14DE has a cast-iron cylinder block, bore is 73.6 mm (2.898 in) and stroke is 81.8 mm (3.220 in). The pistons are each fitted with two compression rings and a single oil ring.

How does ignition timing work?

The essence of ignition timing, whether it’s static or dynamic, is to ensure the spark igniting the fuel vapors happens at the correct time. “Correct,” however, is a shifting target. Imagine an engine piston rushing up its bore during the compression stroke. Fuel is injected into the bore and gets compressed as the piston rises.