JustDSM

iTrader: (28)

Everytime I see these "ticking" posts, I am usually correct in assuming that the lifters were not bled down properly or at all.....

I just installed another set of HKS 272's and have no more valvetrain noise than I did when the car was stock. The first few moments of run-time after the cam install the car was rather noisey, but once the lifters adjusted for the lash everything quieted down to normal levels.

JustDSM

iTrader: (28)

Ever checked your oil pressure on a stone cold start up? Your answer lies there.

Jorge T

iTrader: (18)

not quite answered...explain quiet at idle when fully warm (oil at 50C+.)

timzcat

iTrader: (10)

If you did bleed the lifters and still get abnormal ticking then it is one of two things.
First oil pressure. Obviously at idle oil pressure is at it's lowest. If you go back to the crankwalk days a lot of attention was given to oil pressure and many times oil pressure was low at idle. Some of it was contributed to the oil squirter issues on the 2G but at the same time quite a few of the pumps were weak. There is not much to an oil pump but if the side clearance of the gears is too much then pressure will be low at idle. IT is a good idea if you have abnormal ticking to check the oil pressure is within specification.
Second, is the lash adjusters. By design the oil passage in the lash adjuster is quite small. It only takes a small amount of debris in the lash adjuster to disrupt it's function. This is why there is a lengthy procedure to clean lash adjusters in the Service Manual. Although synthetic oil is very good at gathering dirt in an engine (acts like a degreaser) it still happens. A couple of people have cleaned their lash adjusters as prescribed and have had success. They have also found that they had a bad adjuster which is easy to spot because you can push it in without bleeding it.

timzcat

iTrader: (10)

I'd say two things at work. Heat in the valvetrain is expanding everything, valves, lash adjusters, even rocker arms. Additionally the oil is up to operating temperature so it flows like water so flow is at it's best. IF there is any restriction in the lash adjusters the oil is much more capable of flowing in and out to properly adjust. When the oil is cold you have plenty of pressure but flow is poor because of it's viscosity. The other thing is cold oil can absorb more noise since it is thicker.

Bimmubishi

iTrader: (3)

If the tapping is very loud you could have knocked one of the rockers off the lifter by accident.

Autoxevo

iTrader: (6)

So how do you bleed the lifters?

evolved4g63

iTrader: (11)

WHAT HE SAID!! I was going to follow the evomoto how to. But if there is something that needs to be added, i would like to know. timzcat help us out.

timzcat

iTrader: (10)

Remove the lifter from the head and insert a "pin" in the center bore. Most use a paper clip to do this. I used a cdrom drive ejector tool if you ever seen one. I think a small allen wrench would work well too since it stiffer. We are talking a 1/16th allen wrench or the larger size paper clip.
Put the pin down through the top of lifter and apply a small amount of pressure to unseat the check ball in the lifter. You'll know you have it cause you can immediately start to move the top of the lifter in. Pump the the piston in and out with the pin in place until you can do it without the pin. Basically when you unseat it and push on the piston you are going to be pushing oil out so be careful because if you do it fast you will shoot oil out of the lifter.

timzcat

iTrader: (10)

Easiest thing I found was to hold the lifter in one hand.
Put the pin in the lifter until it is all the way in. Use your thumb and forefinger to pinch the pin really close to the piston. Now push the pin in and at the same time your fingers will be meeting the piston so you can push it in and out while holding the pin in place. It's not very difficult to do, harder to explain. First one your kind of like wtf but then you figure it out and they are easy.

evolved4g63

iTrader: (11)

Thanks for the info. Evomoto should do an update. Sounds easy enough, and is for sure better than ticking noises.

MadMsheen

iTrader: (4)

I found a procedure on this forum wherein someone took the throttle to 3000 RPMs, then abruptly released the throttle back to idle. After repeating this quite a few times the noise lifters should refill with oil, and the tapping should go away.

I tried this a few times, and the tapping is almost gone. I just have a little left. Unfortuneately, I did not see timzcat's posts before I started this process. I hope this is not doing any damage to the car.

Drifto

iTrader: (6)

I have zero ticking noises and I did not bleed the lifters. No noise now or ever. I'm not argueing that bleeding the lifters isn't the proper thing to do, just that I haven't had a problem.

silverofs

iTrader: (3)

i've read that in my alldata system also.

timzcat

iTrader: (10)

Yes there is a procedure in the service manual for pumping them up after bleeding.
It's not a problem. If the noise does not go away after doing this or comes back within a day then you probably have a bad lifter.