Funny 'ticking' sound upon waking from winter
03-11-2012, 06:22 PM
#1
Instructor
Thread Starter
Funny 'ticking' sound upon waking from winter
Hi Guys, so with the nicer weather I finally brought the C4S out of hibernation. This is the first 911 I have owned and the first winter storing it.
To start it up I removed the fuse for the fuel pump, turned her over a few times for around a second, then cranked her over until the oil pressure was at 5. Put the fuse back in, started up no probs.
After getting out of the car I heard what sounding like ticking to me. more pronounced on the passenger side. Any one experience this or have any ideas? All the fluids were replaced before storage the I checked the levels before starting.
Took it out for a 30 min drive, let her warm up good, didn't get any CEL and nothing seemed out of the ordinary. she has 93K KMS on it and will going for the major service soon.
VID:
To start it up I removed the fuse for the fuel pump, turned her over a few times for around a second, then cranked her over until the oil pressure was at 5. Put the fuse back in, started up no probs.
After getting out of the car I heard what sounding like ticking to me. more pronounced on the passenger side. Any one experience this or have any ideas? All the fluids were replaced before storage the I checked the levels before starting.
Took it out for a 30 min drive, let her warm up good, didn't get any CEL and nothing seemed out of the ordinary. she has 93K KMS on it and will going for the major service soon.
VID:
03-12-2012, 12:16 AM
#5
Rennlist Member
When some or all of the oil leaks out of the lifter it will make noise until it gets pumped up again.
How Hydraulic Valve Lifters Actually Work
A hydraulic valve lifter has four distinct parts, the check ball mechanism, body, socket and plunger. The plunger and socket move along with the push rod, and the body moves in conjunction with the cam. Riding in between the plunger and the socket is a spring and an oil cushion. The hydraulic valve lifter is pressurized by the oil gallery right at the start of motion in the engine. The pressure from the oil is only just enough to remove whatever clearance there is in the valve train, but not enough to actually open the hydraulic valve itself. The cam pushes on the hydraulic valve lifter's body in order to actually open the valve. The spring holds the check ball in its place, and the hydraulic valve lifter's motion opens the check ball cavit,y leaving the check ball behind, but only for a second or so. Then, the cam pushes the hydraulic valve lifter body forward, and the push rod holds the plunger in place while the check ball cavity gets smaller. The check ball is held in place by the support spring, and oil pressure in the cavity forces the check ball to move forward, and that closes the check ball cavity. This traps oil in the check ball cavity and makes the plunger assembly move with the hydraulic valve lifter body, and then that moves the push rod and opens the hydraulic valve. The oil pressure inside the check ball cavity prevents the spring inside from compressing further. The cam then finishes its rotation, and the spring makes the hydraulic valve lifter body go back to the rest position on the base circle of the cam. The check ball isn't under a lot of pressure then and is ready to be shoved into the spring by the oil pressure, which lets in oil into the check ball cavity and starts the whole cycle again.
Read more: How Do Hydraulic Valve Lifters Work? | eHow.com http://www.ehow.com/how-does_5006538...#ixzz1orv8JyeE
How Hydraulic Valve Lifters Actually Work
A hydraulic valve lifter has four distinct parts, the check ball mechanism, body, socket and plunger. The plunger and socket move along with the push rod, and the body moves in conjunction with the cam. Riding in between the plunger and the socket is a spring and an oil cushion. The hydraulic valve lifter is pressurized by the oil gallery right at the start of motion in the engine. The pressure from the oil is only just enough to remove whatever clearance there is in the valve train, but not enough to actually open the hydraulic valve itself. The cam pushes on the hydraulic valve lifter's body in order to actually open the valve. The spring holds the check ball in its place, and the hydraulic valve lifter's motion opens the check ball cavit,y leaving the check ball behind, but only for a second or so. Then, the cam pushes the hydraulic valve lifter body forward, and the push rod holds the plunger in place while the check ball cavity gets smaller. The check ball is held in place by the support spring, and oil pressure in the cavity forces the check ball to move forward, and that closes the check ball cavity. This traps oil in the check ball cavity and makes the plunger assembly move with the hydraulic valve lifter body, and then that moves the push rod and opens the hydraulic valve. The oil pressure inside the check ball cavity prevents the spring inside from compressing further. The cam then finishes its rotation, and the spring makes the hydraulic valve lifter body go back to the rest position on the base circle of the cam. The check ball isn't under a lot of pressure then and is ready to be shoved into the spring by the oil pressure, which lets in oil into the check ball cavity and starts the whole cycle again.
Read more: How Do Hydraulic Valve Lifters Work? | eHow.com http://www.ehow.com/how-does_5006538...#ixzz1orv8JyeE
