sound a little like valve tapping(video)

[sqz24]

My cars has had a ticking sound for around 2.5months 3,000 miles origonally thought it was the lash adjusters, replaced them with the evo3 ones no change yesterday i reopened the valve cover checked for play on the rocker arms couldnt find anything replaced valve cover gasket did a compression check starting on the passengers side cylenders read 151 150 150 150 "tapping" seems to be coming from the second piston in from the passengers side dont seem to have power loss like i stated it has been this way for a while. the noise started before the C.O.P. ,exhaust manifold, o2 dumptube, catch can, and turbo outlet pipe were installed(ordered them 2 days brefore tapping started.) I am running NGK brp6e plugs they looked really good when out of car yesterday. car idles at 800-850 rpm vacume/boost gauge shows a steady 18/19 pounds at idle, oil pressure at idle is between 15 and 20 pounds 45-50 at highway speeds
since i bought the car i have used castrol syntec. 10w30. Car has 108k on it
the car is a 95 gst 5 speed no anti lock brakes and a/c compressor was off the car when i bought so i just removed rest of the system.
any suggestions or help with be welcomed.

 

[Trelisong]

well at first i thought spun a rod bearing... but then I thought about it and remembered what mine sounded like with a spun rod bearing, and at idle my car was actually very quiet and you only heard the knock when you reved it.

his car consistantly makes the noise so a collapsed lifter sounds about right, also he said he drove it like this for a few months so i really dont think it could be a spun bearing, he would have destroyed the motor by now.

I would suggest pulling the head and dropping it off at a machine shop for inspection.

 

[92nolatist]

Ok true, ive never had a spun bearing so it was just a thought. But i do know that overboost can cause some serious damage. However, dropping the head off at a machine shop is a good idea ### ive had my engine skip a couple intake cam gear teeth on a startup and it sounded just like that.

But when the head is in the shop, definitely check the timing belt auto tensioner-theres a procedure in the Hayne's repair manual on how to check it.

 

[Captainredeyez]

well at first i thought spun a rod bearing... but then I thought about it and remembered what mine sounded like with a spun rod bearing, and at idle my car was actually very quiet and you only heard the knock when you reved it.

his car consistantly makes the noise so a collapsed lifter sounds about right, also he said he drove it like this for a few months so i really dont think it could be a spun bearing, he would have destroyed the motor by now.

I would suggest pulling the head and dropping it off at a machine shop for inspection.

I agree and like I said, I'm pretty sure it could be a collapsed lifter.

 

[goonie]

to be on the safe side check your rod bearings
remove the oilpan and look for play
the last time i heard a car that sounded like yours was one with a weared out rod bearing

because you said the sound seems to come from one cilinder
listen under the car by the oilpan

 

[sqz24]

Not trying to sound rude, But my original post stated after the sound started i bought and installed the evo 3 lifter with the 3MM opening. So pretty safe to rule out lifters. tomorrow I will properly check timing and rod bearing.
I will let everyone know whats going on. Would rod bearing stop car from doing 6,700RPM and/or 127MPH? (well that was today) Cars sees city, country and highway driving 6 days a week. have put 4,300 mile on car since noise started.
Definitely appreciate everyones input/help.
Will keep you informed.

Bryan

 

[sqz24]

well cam timing (both) are dead on with crank gear at TDC rod bearings didn't feel sloppy on any cylinder. Never got a chance to do a leak test yet. Now my starter went .
thank god my parking lot and work both have hills.

 

[Captainredeyez]

Have you figured out what the ticking is yet? I think I beginning to have the same problem with my car.

 

[Fast-Orange]

harmonic balancer?

 

[nlzn]

Please don't take this as an insult, but are you sure that sound is coming from the VC? Have you gotten under the car near the pan when it's running? Also, IIRC if it was a rod issue it would get louder with RPMs. (I think the check for that is to remove plugs one at a time and see if it goes a lot quieter with one out.)

 

[Fast-Orange]

http://www.dsmtuners.com/forums/problem-diagnosis/306793-knock-noise-engine-valve-lifters.html

check that out it sounds like your same problem.

 

[Captainredeyez]

no way, mine doesn't sound like that at all.