How do I make sure my cylinder is at TDC?
Once the top dead center timing mark is lined up with the marker on the engine, the motor should now be at top dead center. To verify, shine the flashlight down into the spark plug hole. You should be able to see the top of the piston clearly near the top of the cylinder.
When to put engine in or out of TDC?
If the crankshaft pulley bolt needs to be removed or it is important that the engine remain at the TDC position, you’ll need to install the “engine in” flywheel lock (9206). There is also an “engine out” flywheel lock (9130) which is used if the engine is on an engine stand.
What’s the best way to find a TDC?
A more accurate way to locate (TDC) is by using a piston stop tool. Screw the tool into the #1 spark plug hole by hand; and then slowly rotate the crankshaft by hand until the piston come up against the stop.
When to use TDC between compression and power strokes?
During approach to (TDC) between compression and power strokes when both valves are closed; there will be pressure that will push your thumb off of the hose to allow air to escape. When air stops blowing out it is fairly near (TDC) on the compression stroke. Move on to STEP FOUR. Use a vacuum/pressure gauge. Hook up the gauge to your hose.
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.
If the crankshaft pulley bolt needs to be removed or it is important that the engine remain at the TDC position, you’ll need to install the “engine in” flywheel lock (9206). There is also an “engine out” flywheel lock (9130) which is used if the engine is on an engine stand.
How do I determine if I am on 1 or 6 at TDC?
The set of pushrods that don’t move are the cylinder that is about to fire, commencing the power stroke. In answer to your question, you are at TDC for BOTH 1 and 6, however for timing / firing order setup, number one cylinder is the one that the pushrods need to be stationary (not rocking).
Where is the 1 cylinder located at TDC?
It will appear in an opening in the bottom of the clutch housing near the starter. When the groove is centered in the opening the #1 cylinder is at TDC. Personally, I don’t care for this method because if the groove is not centered in the opening, the timing can be off ±1 tooth.
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.