Now you got me a doubting!
OK, how are you determining you are on TDC, on compression stroke?
Are you just turning the engine till the Timing Marks are lined up on "ZERO" (I think this is what KHLow2008 mighta thought you was a doin') then stickin' the Dist. In, and pointin' it at #1?
If this be the case--we mean there are 2 times that "zero" will come up in 1 cycle
The way I determine which one is COMING UP, TOWARD the correct timing mark ( which time it will be on the CORRECT Zero or "TDC")
I remove #1 spark-plug
Next, either I use a Remote Starter or a Remote Buddy to "BUMP" the engine around while I have my thumb or finger crammed into JUST THE BEGINNING OF THE #1 HOLE
Exhaust Stroke (or 1st time the Marks Zero together) will just pass on by. Cause the exhaust valve is open and no compression pressure can build behind your thumb.
But when Compression stroke comes up, your thumb cannot hold back 150 lbs of pressure. It will make a huge spitting sound by your thumb as it begins compression strokeat that point you QUIT with the bumping
All you gotta do now, is: in the same direction the crank was turning----its now on compression stroke, headed for TRUE TDC----when the compression stoke ends (as you continue, manually turning a wrench or socket on the crank, to "ZERO")
You are fully at compression PEAK (this point is "TDC", and if it passes that Zero the slightest bit, your piston is heading down on "POWER STROKE" (the stroke Or CYCLE, that should be occurring, after the SPARK IGNITES THE COMPRESSED FUEL MIXTURE).
POWER (starts at TDC)---
INTAKE (starts 180 degrees from TDC)---
"TOP DEAD CENTER" [TDC] is when you install the Distributor, when you have the Oil Pump lined up, and the distributor Seats Down fully. The ROTOR BUTTON should be a Pointin' at #1 Tower on your Distributor. This is sorta "SPARK CALIBRATION FOR THE SYSTEM"!
ARE WE ON THE SAME PAGE---or am I lost--or Am I, not explaining this to the best of my ability?
Sunday, December 5th, 2010 AT 7:49 AM