1999BlueTA

iTrader: (34)

Hi I recently purchased a 1999 Pontiac Trans Am about 2 months ago and a couple of weeks ago I began to hear Slight ticking or tapping noises coming from my motor when I start the engine its not a knock or piston slap it sounds like its coming from the top end of the motor it use to tick or tap as long as the car would sit and idle on start ups now the ticking or tapping sound has begun to get louder and it does'nt stop even if I drive it around my car has just turned to 64,000 miles and has good oil pressure does anyone know what my problem could be or has anyone else ever had this issue before any and all help would be greatly apprieciated. Thanks In Advance.

wilddawg

I would take the car to a reputable mechanic in your area. I have serval drag race buddies that work at dealerships. But here goes. SOund like you have a lifter that is stuck or a racker arm that has worked itself lose and out of adjustment. Cound be weak valve springs also if it does this constant. Try flushing the motor with seafoam and then change the oil. If the motor have any sludge it might be keeping oil from a lifter or rocker. This is just my opinion from not hearing the car run myself. Good luck

cbrich

I had this same problem with my silverado and it was lifters where leaking down over night. I installed some LS6 valve springs and the ticking noise went away, but I think what fixed the problem was torqure the rocker arm bolts down to 20 ft-lbs.

1999BlueTA

iTrader: (34)

Yep guys those are the exact things that I was thinking. Thanks for your help.

ssjaime

I Have 02 Ss And I Have The Same Issue. But Some People Say Thats Just The Way The 02 Ls1 Sounds

SprayedLT1

iTrader: (8)

Do you have headers? It could be an exhaust leak too.

jimmy 2 Times

iTrader: (18)

mine has done that since i changed my OEM rockers to some HS 1.7

1badA3Z

iTrader: (58)

it can be a few diff things,bent pushrod,bad lifter,bad rocker arm,exhaust leak at header,to name a few,hope this helps ya out

CRAGER

Check to see if the pushrods are bent, then try looking at the springs/rocker arms as well. Also check out the lifters.

Now if you have headers, look for leaks from your A.I.R. tube flanges, or the EGR flanges, or even worse header gaskets.

If thats not the case look for header leaks.


Good luck hunting it down. When you find the problem, post up in here and let us know what it was.

Peace,
Craig.

CRAGER

BTW- Good oil pressure hmmm...., how much oil pressure does it show on your gauge?

But have you checked the oil level lately? And what type of oil is in there?

What octane rating gas are you putting in your car?
Only 93 I hope.



Peace,
Craig.

perezpowerbuilders

My 99m6 had an annoying ticking sound coming from under the hood too!! What I found was a loose sparkplug that was backing out. Check all your plugs make sure they are snug! Least expensive and simple thing to check. Hope this info helps you out. Goodluck!

PewterNHRA2001

iTrader: (1)

i get a weird ticking sound from my engine when i dont put 93 in it, but as soon as i do put in 93 and run it a little bit, the ticking goes away...wierd..

2000 Tran Zam

iTrader: (2)

you are probably detonating. When you put 93 in there it doesnt ping anymore, which is what you were hearing.

BatmobileSS

iTrader: (8)

Mine kinda makes noises between 2000 and 2700 rpms. It purrs at all other rpm's . I haven't really gotten the chance to check it out yet. Is yours at all rpms?

PewterNHRA2001

iTrader: (1)

alright, dont know too much about this topic, what is detonating and is it real bad for my engine? thanks in advanced

Jax Hawk

I've heard that the injectors produce a ticking sound that is often mistaken for lifter tick, any truth to this?

screaminbird

i have a similar sound in my 99 ta does it sound almost like a howl and does it speed up as the rpms go up?