Assuming that everything MECHANICAL (ie, camshaft, timing chain) is working properly: pull the #1 plug, put your compression gauge tube in the hole WITHOUT connecting the compression gauge (assuming you have a 2 piece compression gauge), put your finger over the hole in the compression gauge tube, turn the engine by hand, using a long rachet and socket until you feel the compression. At this point you have 2 options, slowly turn the engine by hand until pressure stops and you start feeling vacuum, then turn the rachet the other direction a couple times until you have split the difference between compression and vacuum. It's actually a pretty good guess, but if you can see the timing mark you can get it EXACTLY on TDC.
the piston in cylinder #1 at the top on the compression stroke
It is when the number one cylinder has reached top dead center on the compression stroke.
That would be the top of the compression stroke on the number one cylinder.
The TDC is when the number one cylinder is at the top or top dead center of the compression.
The location of the ECU is in the engine bay dead center...
There is no direct connection between compression ratio and pressure. Ratio is a mathematical calculation of the cylinder volume from bottom center to top center. Actual cylinder pressure will depend on the volumetric efficiency of the engine. Factors the affect volumetric efficiency include rpm, intake design, throttle plate size, amount of restriction in the exhaust, size of the valves, shape of piston and combustion chamber.
No, it is in crankshaft degrees, an example: intake centerline of 108* degrees, means the centerline occurs 108 degrees past Top dead center on cylinder 1.
This means the timing is set to fire the spark plugs at 10 degrees before top dead center on the compression stroke.
Look at the distributor and make a mark on the housing where the #1 cylinder connects. Then pull the distributor cap. The mark is so you know where #1 is with the cap off. Next, bring #1 cylinder to top dead center on the compression stroke. The rotor should be pointing at the mark you made. If you need directions on how to get #1 to TDC on the compression stroke - another topic..
In the field of automotive repair, we always refer to top dead center as. The #1 cylinder being at the TOP MOST POSITION during its compression stroke. The 22RE is no exception.
A compression test can tell you many things such as if you're getting blow by. which means one of two things either all the compression ring gaps on the piston line up in sync or possibly you have a crack in your cylinder. Also if you have the distributor shaft apart from the engine a compression test will help indicate when the proper piston is at TDC (top dead center). If you get low compression on one cylinder, put a teaspoon of engine oil down the bore. If the compression improves, then you have a worn bore or rings. If there is no difference, you have a burnt valve. If two adjacent cylinders are low, it is very likely that you have a blown cylinder head gasket between those cylinders. This could also include a warped cylinder head and may need skimming.
Presumably we are talking 4 stroke? If so, none or the exhaust - it will be at the top of the compression or the exhaust stroke
A diesel engine is a compression engine. air is drawn into the compression chamber and compressed witch creates lots of heat. around 20 degrees before TDC (Top Dead Center) diesel fuel is injected into the compression chamber and ignites.
On the 4x4 equipped , 6 cylinder , 1997 Ford Explorer , it is a dial type switch located in the center stack of the dash just to the left of the radio
You want the TDC on the compression stroke of the #1 cylinder, then drop in the distributor with the rotor pointing to #1 on the distributor cap.
Bring number one cylinder to top dead center. Make Sher you on the compression stroke. If not your 360 degrees off with you piston setting for tdc. Make Sher that the distributor rotor is pointing at number one wire on the cap. That should put you in time.
The timing marks are on the vibration damper (front pulley) and a pointer on the front cover.If it is pointing to TDC (0 degrees) on the damper you are at TDC compression stroke or exhaust stroke.If your distributor is still installed and the rotor is pointing to the number plug wire on cap you are at TDC compression stroke.If your distributor is not installed remove number 1 spark plug (front cylinder on passenger side)rotate crankshaft with a socket clockwise,hold your finger over spark plug hole when you are reaching TDC #1you will feel the compression.If there is no compression you are on the exhaust stroke.Rotate crankshaft 360 degrees to reach compression stroke.
Valve sticking, Burnt or broken valve, or bad valve seat could all be the problem. Be sure to check leakdown compression at 15-20 degrees PAST top dead center! Compression release is still engaged at TDC!
If you are installing the Distributor, #1 cylinder must be at TDC / Top Dead Center on the COMPRESSION stroke.If you are installing Timing chain and gears everything will be correct when you line up the dots on the 2 gears.
The volume of an engine is called displacement and is typically measured in cubic inches or liters. An eight cylinder engine that could hold 1/2 liter of water (or air) in each cylinder would be a four liter engine. As the pistons move to the top of the cylinder in an exhaust stroke, they theoretically "displace" the 1/2 liter of air in each of the cylinders. The compression ratio is calculated during the compression stroke. If the piston occupies 90% of the enclosed cylinder space when it is at top dead center, the compression ratio is said to be 10 to 1, or 10:1. If the displacement of the cylinder was 10 cubic inches, it would have been compressed to 1 cubic inch.
Each cylinder has a top dead center position.
turn engine to top dead center on compression stroke then turn 1 quarter of an inch passed set at .005
With the #1 cylinder on top dead center (TDC) of the compression stroke, the rotor should point to #1 on the distributor cap.
In geology, the term compression refers to a set of stresses directed toward the center of a rock mass