Where are the spark plugs located on a GM LT1?
Where are the spark plugs located on a GM LT1?
The distributor transfers spark energy to the spark plugs from a single ignition coil and module (usually mounted on the front of the left cylinder head). Figure 2 is a schematic of the Opti-Spark ignition system.
When did the air pump in the LT1 explode?
A/C Compressor Mounting Accessory Mounting Bracket AIR Pump Recall Components AIR Pump pipes and EGR pipe Exploded Views 1993 AIR and EGR piping EGR system (1994-1997) Intake Manifold Mounting Exploded View Cylinder Head Mounting Exploded View Oil Pump Drive Mounting Exploded View Valve Cover Mounting Exploded View
Why is my water pump leaking on my Gen 2 engine?
The shaft seal for the water pump is the most common point of failure in the cooling system, and it is usually rather obvious. Leaks may start small, but they get big in a hurry. When replacing a water pump on a Gen II engine, it is usually best to replace the shaft-drive coupling as well.
What kind of ignition system does a GM LT1 engine use?
These ECMs utilize a PROM chip for vehicle calibration, and fire the fuel injectors in “batch-fire” mode. The ignition system is GM’s Opti-Spark system. Engines from 1994 and later use the newer flash-style ECMs, which still use the Opti-Spark ignition system, but fire the fuel injectors sequentially instead of batch-fire.
The shaft seal for the water pump is the most common point of failure in the cooling system, and it is usually rather obvious. Leaks may start small, but they get big in a hurry. When replacing a water pump on a Gen II engine, it is usually best to replace the shaft-drive coupling as well.
The distributor transfers spark energy to the spark plugs from a single ignition coil and module (usually mounted on the front of the left cylinder head). Figure 2 is a schematic of the Opti-Spark ignition system.
These ECMs utilize a PROM chip for vehicle calibration, and fire the fuel injectors in “batch-fire” mode. The ignition system is GM’s Opti-Spark system. Engines from 1994 and later use the newer flash-style ECMs, which still use the Opti-Spark ignition system, but fire the fuel injectors sequentially instead of batch-fire.
What happens when the Opti Spark system fails?
Figure 2 is a schematic of the Opti-Spark ignition system. Typically, when the Opti-Spark system fails (or is in poor condition), both the fuel injection and the ignition system are affected. The Opti-Spark system relies on two signals generated by an optical sensor pair and a timing disk.
