How can I tell if my engine is at TDC?
So, after you get the crankshaft (by flywheel indication or by checking actual piston location), check the camshaft sprocket to make sure the camshaft alignment mark is at the TDC position as well. This procedure can be performed by one person. However, it is much easier to perform with two people.
Where does compression TDC work on a car?
Technically, anywhere between where the intake valve closes (on the way up the compression stroke) and where the exhaust valve opens (on the way down the power stroke) will work. Compression TDC is about halfway between those two events, so it’s a nice safe place.
When is the bottom end of a piston at TDC?
There is no concept of a compression stroke if you remove the cam from the equation. The bottom end simply goes up and down. When piston number 1 is at the top of it’s travel, your bottom end is at TDC.
Where does the crankshaft go when setting to TDC?
So, if you simply set the crankshaft to TDC without looking at the position of the camshaft, you may actually be at TDC on the exhaust stroke for cylinder #1.
So, after you get the crankshaft (by flywheel indication or by checking actual piston location), check the camshaft sprocket to make sure the camshaft alignment mark is at the TDC position as well. This procedure can be performed by one person. However, it is much easier to perform with two people.
There is no concept of a compression stroke if you remove the cam from the equation. The bottom end simply goes up and down. When piston number 1 is at the top of it’s travel, your bottom end is at TDC.
So, if you simply set the crankshaft to TDC without looking at the position of the camshaft, you may actually be at TDC on the exhaust stroke for cylinder #1.
Technically, anywhere between where the intake valve closes (on the way up the compression stroke) and where the exhaust valve opens (on the way down the power stroke) will work. Compression TDC is about halfway between those two events, so it’s a nice safe place.
When the TDC timing mark on the damper lines up with the index on the timing cover, #1 piston is at TDC. There are two ways to determine if you are at TDC of the compression stroke, (not exhaust stroke) on the 4.3L engine: One is to remove the driver side rocker arm cover and check that both valves for #1 cylinder are closed.
How to replace ignition distributor in Jeep Grand Cherokee?
9. Rotor, cap, connections Now install the rotor, then the cap and distributor connector. Then using previously made notes correctly connect all ignition cables. 10. Fan Reinstall the auxiliary fan and connect negative battery cable. Start engine. Take a beer. Technorati Tags: Jeep, Cherokee, XJ, Grand Cherokee, ZJ, distributor, rotor, cap
How to replace oil pump distributor in Jeep?
Before inserting new distributor in it’s place you need to make some alignment. First, using flat screwdriver, set the oil pump shaft around 11 o’clock position: 7. New distributor preparation Then take the new distributor, put the old cap on it and mark the distributor next to the number one cylinder terminal as you did with the old one.
Where does the distributor Mark go on a GM Truck?
As the shaft gear seats itself, the rotor will turn stamped into the distributor housing. With the shaft gear fully seated, the metal tip of the rotor needs to be pointed pretty close to the “6”. At TDC, that mark will align with a similar notch on the engine block.
When to replace the distributor in a Jeep Grand Cherokee?
How to Replace the Distributor in a Jeep Grand Cherokee. Jeep introduced the Grand Cherokee in 1993, and engines from then until 2000 contained distributors. The 2.5L and 4.0L engines had distributors all through those years, with the 5.2L and 5.9L joining the group from 1993 to 1998.
How to replace ignition distributor in Jeep 4.0L engine?
Now lie under the car and turning the crankshaft vibration dumper clockwise (!) find the notch on it and mark it with sharpie – it will make our job a little easier: Then, this time from the top, rotate it clockwise until that notch will be aligned with 0 degree mark: Now the rotor should be aligned with the mark we did before:
Where is the knock sensor on a Jeep Cherokee?
Fig. 11: Sync Pulse Signal Generator Operation Courtesy of Chrysler Motors. The knock sensor is located on the lower left side of the engine block just above the oil pan. See Fig. 12. The knock sensor provides an input to the ECU, indicating detonation (knock) during engine operation.
How is the engine speed sensor on a Jeep Cherokee?
The engine speed sensor senses TDC, BDC, and engine speed by detecting the flywheel teeth as they pass by the sensor during engine operation. The engine speed sensor is non-adjustable. The flywheel has three trigger notches, 120 apart.