Many things-Burnt or Broken Intake or Exhaust Valves.Broken Compression Ring,Bent Push Rod,Pumped UP Hydralic Lifter,Hole in Piston or Block,,OR EVEN a small Piece of CARBON that has come loose from the Compression chamber & has gotten STUCK UNDER one of the VALVES.or a broke Valve Spring.or keepers fell off.Broken conecting Rod.
Each cylinder needs fuel, compression and spark. You are missing one of those.
This all depends on why it has low compression. If the rings are worn out, the motor should be rebuilt. If one of the valves is bad, re grinding it or replacing them is the fix. Perform a cylinder leakage test to confirm it. You will probably need to take it to a shop for this, but unfortunately, there usually are no quick fixes for low compression.
Number one cylinder is located driver's side front of engine. With the # 1 piston at TDC on the compression stroke, the rotor will be pointing at #1 plug on cap.Number one cylinder is located driver's side front of engine. With the # 1 piston at TDC on the compression stroke, the rotor will be pointing at #1 plug on cap.
Check the Piston Ring.
Remove number one spark plug and squirt some motor oil into the cylinder. Now do another compression test. If the compression goes up considerably in number one cylinder you probably have bad/worn or cracked piston rings. If the compression doesn't change much you probably have burned or bent valves.
Most of the times when you have low compression on one cylinder it's an indication that the head gasket is blown. If more than one cylinder has low compression and is hard to start the you most deffinatly have a blown head gasket
That would be the top of the compression stroke on the number one cylinder.
Oil burning or loss of compression on any one cylinder. It may also be missing on one cylinder. A compression test will verify this.
If you are getting insulation blown upward, you most likely have a 4 cylinder engine which has a loose spark plug in the number one cylinder.
there is no hard fast rule here. but typically with the cap off and number one cylinder at TDC on compression stroke. the rotor will point at number one cylinder on the engine.
check the compression
The TDC is when the number one cylinder is at the top or top dead center of the compression.
Low compression in one cylinder can mean several things. The valves or piston rings may need to be replaced. There may be a crack on the engine, or the head gasket may have blown. The engine should be diagnosed properly to see what exactly is the cause of the low compression.
It is when the number one cylinder has reached top dead center on the compression stroke.
No. When the timing mark is at tdc, #'s 1 & 6 are both up. One is up for compression, the other is up for exhaust.
Sounds like it is out of time, check the mark on the crank and number one cylinder and distributor. their is a compression stroke and exhaust stroke so be sure you are one the compression when checking timing. Sounds like it is out of time, check the mark on the crank and number one cylinder and distributor. their is a compression stroke and exhaust stroke so be sure you are one the compression when checking timing. This condition defines a intake valve is open when the spark plug fires. Look to see if the plug wires is properly connected in the right firing order. If the engine has been disassembled the vale timing could not be set proper. Ignition timing may not be set to the right position. Timing mark at TDC. Cylinder number 1 on compression stroke.Drop distributor in with rotor facing cylinder number 1 on distributor cap.
Your car is probably just effed up!
A popping sound (when running if it will run), backfiring, and low compression on one cylinder when testing with a compression guage.
Remove coil wire from distributor cap and ground the wire. Remove the spark plug from number one cylinder. Stick your finger in the spark plug hole. Have an assistant jog the engine over with the key. When you feel and hear compression coming out from the number one cylinder (it will be obvious) tell your assistant to stop. At this point you will continue to move the crankshaft clockwise by hand until the timing marks for TDC are lined up. You now have the TDC firing point for number one cylinder.
The piston is on the up stroke to compress so both valves are closed
Number one is the cylinder closest to the radiator.Number one is the cylinder closest to the radiator.
It could be any one of the contacts. When the distributor was put in, depending on what type of motor it is, number one could be anywhere. You will need to bring number one cylinder to top dead center on the compression stroke and see where the rotor is pointing. That will be number one and set the rest of the plugs from that.
Number one cylinder is the cylinder on the far right (passenger side in US).
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
Number one is the cylinder closest to the radiator.