You can tell if you have a blown lifter by get someone to count of 10 seconds for you and you need to count how many times the noise happens in the 10 seconds and then multiply by 6. That should give you a number. Take that number and then compare it to your idle RPM's. If it's the same as your idle RPMs, then it's likely bottom end knocking. If it's half as fast as your RPMs - then it's valvetrain, like a lifter or an exhaust leak.You can tell if you have a blown lifter by get someone to count of 10 seconds for you and you need to count how many times the noise happens in the 10 seconds and then multiply by 6. That should give you a number. Take that number and then compare it to your idle RPM's. If it's the same as your idle RPMs, then it's likely bottom end knocking. If it's half as fast as your RPMs - then it's valvetrain, like a lifter or an exhaust leak.
Take a pushrod and push down on the plunger in the lifter. A hydraulic lifter is spring loaded.
You can tell if your heal lamp relay is blown is by inspecting the fuses. If you look closely at the fuse, you will be able to tell it is blown or not. If you see a separation in the fuse, it is blown.
When the cam can be rotated several degrees without the lifter moving this indicates the lifter is on the base. This may not hold true with variable displacement engines or in the case or major valvetrain damage.
Take a long screw driver and place the handle in your ear. Touch the valve cover with the other end, and you can usually tell which lifter is clicking by this method.
You can tell a bad valve by doing a compression test.
This is a toughie. First you have to decide which lifter it is then pull the rocker cover and find the rocker arm that has play in it. Then look at the lifter and where the push rod rides should be stuck down further in the lifter bore than the rest. Or press down on the inside and if it goes down over 1/8 inch and is springy the lifter is bad.
Remove the fuse and look at it. If you cannot tell if it is blown by looking at it then check it with an ohm meter.
There are many ways to tell if a fuse is blown. The most obvious way of telling is if it doesn't work.
There's a ticking noise under my 2002 tahoe. If it is a lifter. Can you tell me what a lifter is? And is that the reason why my service engine light won't go off. Someone told me that it had to do with some box that holds wires under the truck. Is that true?
While just holding the weight on his shoulder, the weight lifter does no work! For work to be done, the mass must be moved through a distance … No Movement, No Work! (but don't tell that to a weight lifter …)
with the rocker cover removed, try pushing down on the pushrod end of the rocker arm. if it moves ,the lifter is bad
A relay does not have a fuse. The circuit for the particular relay is fused. You can tell if the fuse is blown by testing it with an ohm meter.