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Where should the cam position be when setting timing marks on a 1994 Honda Civic 1.5L sohc?
#1 piston should be at TDC and both valves closed (compression stroke)
Tdc does this the piston on the number one plug has to be totall at the while setting the timing on a 2001 dodge intrepid 2.7 engine?
The marks on the chain and the sprockets are set in such a way that the chain is installed at 50 deg after tdc. This is done so that the pistons are not at tdc where they could hit the valves while trying to install the chain. The marks are the only thing after tdc. When the chain is installed properly, the valves and pistons will be in proper time and the valves will be closed when the piston is at tdc. All you have to do is ine up the plated links on the chain with the proper marks on the sprockets.
Finding TDC should both values be closed?
TDC is the uppermost point of piston position in the cylinder, at the exact midpoint between ascension & descension of travel (yes, the piston is stationary for a few degrees - use a degree wheel & dial indicator), during the compression stroke - YES, when both valves are closed.
How can you tell if your on the compression or exhaust stroke?
You can determine if you're on the compression or exhaust stroke by observing the position of the piston and the alignment of the crankshaft. When the piston is at the top dead center (TDC) and both valves are closed, it's the compression stroke. Conversely, if the piston is moving down from TDC and the exhaust valve is open, then it's the exhaust stroke. Additionally, you can feel for air pressure at the spark plug hole during the compression stroke.
How do you tappet adjustment of cat generator?
i adjusted tappet on cat engines by turning the engine first piston no.1 in TDC and check all (intake/exhaust) valves in close position,or follow maintenance guide book ,then check again when piston no.1 on exhaust stroke the same procedure be taken. or do it by turning the engine till the individual piston on TDC as perengine firing order and adjust both valves
How do you adjust valves on 6 hp Briggs and stratton engine?
You have to set the piston at Top Dead Center (TDC). I beleive the lash adjustment (valve clearance) is .004 to .006 in. That means thousandths. Once you have set piston at TDC (valve springs will not be compressed but extended on the compression stroke at TDC). You can now set the lash adjustment by loosening the set nut and bolt. You need a feeler gauge to do this. Set lash on both valves then recheck.
In regard to engines TDC stands for?
Top Dead Center, unless otherwise specified, refers to when the piston in cylinder number one reaches the closest it can be to the cylinder head. All the valves should be closed at this point.
When engine is in time is cylinder 1 TDC or not?
When the engine is in time, cylinder 1 is at Top Dead Center (TDC) on the compression stroke. This means that both the intake and exhaust valves for cylinder 1 are closed, and the piston is at its highest point in the cylinder, ready for the ignition of the air-fuel mixture. Proper timing ensures that the engine's valves open and close in sync with the piston's movement for optimal performance.
When you align timing marks and have it TDC the cam valves should be closed on compression stroke?
should be in between intakevalve movement and exhaustvalve movement Yes, valves should be closed.
Where should the lobes of the intake and exhaust cams be on number 1 cyl at tdc on 98 Mazda 626?
At TDC of the compression stroke for cyl #1, the cam lobes will be in a position such that they are putting no pressure on the valves, and valves are closed. At TDC of the exhaust stroke for cyl #1, the lobes will be in a position such that intake and exhaust valves may be open. Exhaust will be closing, and intake will be opening. There are two revolutions for the crank for one of the cam. TDC usually refers to TDC of the compression stroke, when valves are closed. This is when combustion/spark occurs, and is when the valves are adjusted on most engines.
Which of the following statements correctly describes the position of the intake and exhaust values during most of the power stage in a four cycle engine?
ClosedClosed.closedWhen the piston is at top dead center at the beginning of the power stroke both valves are closed, when the piston reaches dead bottom the exhaust valve opens up, when the piston reaches TDC again the intake valve opens, when the piston reaches dead bottom again both valves close to allow compression of the fuel, then at TDC the spark plug fires begins the power stroke again.They will be closed.
What is the difference of the ignition timing advance and retard?
Ignition timing is setting the point at which the sparkplug fires relative to where the piston is in the cylinder. The highest point the piston can go is called top dead center, or TDC. Timing is set for a number of degrees of crankshaft rotation BEFORE TDC; the number of degrees is determined by the factory, and since it's setting the plug to fire before TDC, it's called the "timing advance". If you set the timing to be closer to TDC than the factory setting, you're reducing the advance, or "retarding" the ignition timing. If you set it to be farther from TDC, you're "advancing" the timing. Changing the timing can dramatically change a motor's power and efficiency. The reason you set the timing before TDC is that you want the exploding gas to be compressed by the upward-moving piston and force the piston back down, generating power. If you retarded the ignition so far that the plug fired after TDC, the piston would already be moving down when the gas exploded and you'd waste most of the energy from the explosion.
