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Are the timing gear marks dot to dot when number 1 piston is up and on the compression stroke on a 1978 350 Chevy?
Wiki User
∙ 14y ago
Usually, but there are some model years where both dots are at the top of the sprockets when #1 is up for compression. You'll know right away when you start adjusting the valves because when you finish #1 and move on to the next it won't adjust right.
Wiki User
∙ 14y ago
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When timing a 3.0L Plymouth engine I understand that the 1 piston should be a TDC on compression stroke but on the other cam should the 2 piston be on compression or exhaust stroke?
Well if you lined up the timing marks properly then it would not matter. The engine would run anyway.
Is the v timing mark on v8 vortec timing cover zero?
It is zero at top dead center as long as the #1 piston is all the way up on the compression stroke.
Is timing set on exhaust or intake stroke?
Neither, on a 4 cycle engine the timing is set at the end of the compression stroke of the number 1 cylinder.
How do I stab a distuributor in a 1980 Chevy 350?
With it out, rotate the motor over until the number one piston is at top dead center, on the compression stroke. The piston should be at top, with the timing tab and balancer on th 0 degree mark. Then drop it in where the rotor is pointing at the number one cylinder. This is also number on on the cap. The timing will be close enough to start the motor and set with a timing light. You can pull out the number one spark plug and feed a coat hanger wire in the hole to "feel" the piston move up and down as someone manual rotates the motor over. With it out, rotate the motor over until the number one piston is at top dead center, on the compression stroke. The piston should be at top, with the timing tab and balancer on th 0 degree mark. Then drop it in where the rotor is pointing at the number one cylinder. This is also number on on the cap. The timing will be close enough to start the motor and set with a timing light. You can pull out the number one spark plug and feed a coat hanger wire in the hole to "feel" the piston move up and down as someone manual rotates the motor over.
If you just changed the timing belt in your car and the timing marks were lined up now all it does is turn over but not fire and occasionally backfires what is the most likely problem?
If number one piston was not at Top Dead Center (TDC) when the marks were lined up, the timing is probably 180-degrees off. The piston raises twice for each time the spark plug fires: it raises once on the exhaust stroke and then again on the compression stroke (TDC).
Is there any tricks to installing a distributor to get it to point at the number one cylinder on a 1963 cadillac deville 390 motor?
HI There is no real trick. The best way to acccomplish this is to first have the number one piston up at the top on the compression stroke.(number one piston must be at top of compression stroke) To be sure of this, pull out the spark plug in number one cylinder and take off the rocker cover. When the piston is on its way up and the intake valve is closing,it is coming up on compression stroke.(Get the piston as close to the top as possible) Now a chiltons manual will show you where on the distributer cap number one plug wire goes, put in the distributer with the rotor on it and keep dropping it in(turning the gear a little) until the rotor is pointing to the direction the manual shows is number 1 on the Cap. Set timing,Your done
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)
Does rotor point to number 1 when timing marks are lined up?
Yes, if #1 is at TDC on the compression stroke.
Can a retarded engine cause low compression?
If the timing is retarded due to cam and crank timing, the answer is YES. If it is due to distributor or ignition timing NO. Compression is produced mechanically when all the valves are closed during the compression stroke of the piston. If all is well (rings and valves), you should achieve optimal compression from the engine. Almost all gasoline engines require a least 80 psi to fire the cylinder.
What position should the rotor be in when it is firing in the number one position and the piston is TDC and the timing marks are 0-0?
the rotor should be pointing towards the number one plug position on the distributor cap, and the engine should be on compression stroke. If its not the motor will be 180 degrees out
How would you get the piston at top dead center when setting the timing 2001 Dodge Intrepid 2.7L engine?
Remove all spark plugs and rotate the engine until you feel the compression on #1 cylinder. Use your thumb or a compression gage to judge when you are on the compression stroke. Once you feel compression place a long screwdriver or even better a small wooden dowel about 10" long, in the spark plug hole and very slowly rotate the engine BY HAND until the screwdriver reaches the top. That is TDC on the compression stroke. Warning: Do not use the starter to accomplish this. When the timing marks on the chain are lined up the number one piston will not be at top dead center.
What if your 05 corsa has had new timing belt new cylinder and valves but still no compression in number one cylinder?
Check the Piston Ring.
