2007-03-13 03:31:05 · 8 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
The pistons go up on the exhaust stroke to expel exhaust, then suck in air/gas mixture while going down, then going up is the compression stoke (which compresses this mixture. When the plug fires, the rapid expansion of the burning gas pushes the piston down on the power stroke. the next stoke up is the exhaust stroke again.
Turn the engine until that cylinder is at top dead center on the compression stroke (It will be pressuring up as the piston rises.) You can use a long piece of copper wire to feel the piston come to the top & stop before it starts back down. Use a long wire so if you drop it you won't have to pull the head.
2007-03-13 03:43:18 · answer #1 · answered by gejandsons 5 · 1⤊ 0⤋
Remove the number one spark plug. The number one is usually the one nearest the front, on the right as you face the engine. You will also have to remove the valve cover. As you rotate the engine watch for the intake valve to open, then close. After the valve closes, CAREFULLY insert a screwdriver or some other device into the cylinder, through the spark plug opening. While rotating the engine with a wrench, watch the device inserted into the cylinder rise with the piston. The point in which the cylinder rises to its highest position, is T.D.C.
2007-03-13 03:40:11 · answer #2 · answered by Ben H 5 · 1⤊ 0⤋
First unhook negative battery cable then,I would clean the harmonic balancer find the timing marks scribe a line with white chalk then pull out spark plug from #1 cylinder insert a screwdriver and turn crankshaft till feel the piston hit the screwdriver. your line should be at timing tab. at top dead center.
2007-03-13 03:33:30 · answer #3 · answered by kelly 3 · 1⤊ 0⤋
the main elementary way is to align the 0 degree's TDC on the vibration dampener with the marks on the front disguise. If the engine is aside? positioned a dial indicator on the selection one piston and rock the motor slighty on a similar time as the piston is on the strategies-blowing of the cylinder. discover the element the place the piston is maximum and that's T.D.C. If the engine is assembled, attempt to borrow a dial caliper from somebody. Pull the selection one spark plug and rotate the engine till the piston is up on strategies-blowing of the cylinder, in lots of situations the substantial way on the crankshaft is on strategies-blowing the place you will discover it. positioned the intensity element of the dial caliper interior the spark plug hollow and rotate the engine slowly/micro strikes lower back and forth till you detect the element the place the piston is at its maximum element. The is an rather close TDC for any engine development. solid success.
2016-12-19 04:28:39 · answer #4 · answered by boulger 4 · 0⤊ 0⤋
remove the spark plug from number one cylinder.
turn motor over by hand until piston comes up on the compression stroke. (both valves closed)
look at the timing mark on crank, and align it with zero on the top of the compression stroke
this is tdc #1 cylinder
2007-03-13 03:35:02 · answer #5 · answered by chris m 5 · 1⤊ 0⤋
Find number one cylinder. Rotate engine until both valves are free and can easily be moved. Distributor rotor should be pointing at number one location. Also, check your timing marks and it should be pointed at TDC! Both valves have to be free or your not at TDC on number one cylinder.
2007-03-13 03:34:50 · answer #6 · answered by Anonymous · 0⤊ 0⤋
i my self have always taken the #1 plug out the used my thumb to cover the hole and then with a remote starter button i bump the motor over until the compression stroke blows blows past my thumb then check the rotor to see if it is pointing at #1 cylinder ta da TDC
2007-03-13 04:40:12 · answer #7 · answered by Anonymous · 1⤊ 0⤋
Look on the pully behind the fan...It will be marked TDC with a notch.
2007-03-13 03:39:36 · answer #8 · answered by Anonymous · 1⤊ 1⤋