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car makes a ticking noise at start up and idle


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14 replies to this topic

#1 bgonzalez95

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Posted 30 November 2011 - 02:54 AM

Hello once again i am here to ask for any ones advise about whats going on with my 1995 Trans Am 5.7 LT1 , car runs good just have ticking noise at idle i know it's not a rod knock because i have heard it before and that's not the case here ,it's up on the heads i just need help with this i don't know what to check for or if it just needs a adjustment or something broke .please help me out with this i just want to take care of this before this gets worse or it causes more damage.thank you for your time

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#2 Injuneer

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Posted 30 November 2011 - 03:16 AM

Use a stethoscope to pin down the location. Could be a noisy valve lifter, rocker arm out of adjustment, noisy injector. How about an exhaust leak? All possibilities.
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381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor 0.78:1 O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor

#3 bgonzalez95

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Posted 30 November 2011 - 03:24 AM

Use a stethoscope to pin down the location. Could be a noisy valve lifter, rocker arm out of adjustment, noisy injector. How about an exhaust leak? All possibilities.

Ok thank you Injuneer but i don't have stethoscope right now , but what I forgot to mention was that when the car is at idle i can hear the ticking it comes and goes like in a loop if you know what i mean . please let me know what you think thanks

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#4 GaryDoug

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Posted 30 November 2011 - 06:43 AM

You can buy an adequate mechanics stethoscope at Harbor freight or Northern Tool for $4. Or online almost anywhere.
http://www.harborfre...cope-41966.html
3530 ADAMS ST. , Riverside, Ca
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#5 96firebird

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Posted 30 November 2011 - 07:48 AM

If it's ticking on a cold start and then gradually goes away when the engine is warm, more than likely it's an exhaust leak. If the ticking sound is constant, whether hot or cold, then it's likely to be valve train related. (as Injuneer said, rocker arm, lifter, ect...)
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#6 bgonzalez95

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Posted 30 November 2011 - 12:39 PM

You can buy an adequate mechanics stethoscope at Harbor freight or Northern Tool for $4. Or online almost anywhere.
http://www.harborfre...cope-41966.html
3530 ADAMS ST. , Riverside, Ca

Alright cool thanks i was thinking of looking for it at harbor freight ,cool thanks for the info GaryDoug

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#7 bgonzalez95

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Posted 30 November 2011 - 12:48 PM

If it's ticking on a cold start and then gradually goes away when the engine is warm, more than likely it's an exhaust leak. If the ticking sound is constant, whether hot or cold, then it's likely to be valve train related. (as Injuneer said, rocker arm, lifter, ect...)

Ok i think it may be a rocker arm,lifter ok so what do i do when find which one makes the noise ,what do need to look for? or how do i adjust it .

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#8 Injuneer

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Posted 30 November 2011 - 04:07 PM

Rocker arm adjustment:

http://shbox.com/1/4...l#adjust_valves

That's for a loose rocker. If its a lifter, and adjustment as above may help, but if it doesn't the lifter needs to be replaced.

Check the exhaust for certain. It can make a "tick" just like a mechanical noise.
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FRED

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381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor 0.78:1 O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor

#9 bgonzalez95

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  • Engine: 5.7 Lt1
  • Transmission: 4L60E

Posted 30 November 2011 - 05:19 PM

Rocker arm adjustment:

http://shbox.com/1/4...l#adjust_valves

That's for a loose rocker. If its a lifter, and adjustment as above may help, but if it doesn't the lifter needs to be replaced.

Check the exhaust for certain. It can make a "tick" just like a mechanical noise.


Thanks injuneer i just read up on that and well i never had the chance to do some thing like this, so what would be the best way for me ,being my first time adjusting the rockers arms? my car is pretty much stock i don't have headers or have never had them removed so i don't think its that. is there a way to tell if its a exhaust leak if you don't have a stethoscope? ,i don't have one right now but will get one by next week i don't have time to get ,but i want to check the exhaust for right now .thanks for your time please let me know what you think.

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#10 CDNbakn

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Posted 30 November 2011 - 06:08 PM

Might I ask why you are attaching images to every post?
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#11 bgonzalez95

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  • Model: Trans Am
  • Engine: 5.7 Lt1
  • Transmission: 4L60E

Posted 30 November 2011 - 06:40 PM

Might I ask why you are attaching images to every post?

Well i love my Trans Am and pretty much all kinds of PONTIACs and i thought people would like to check out these pictures and i don't have a camera right now or else i would putting up pictures of my own Pontiac.why are you asking?
(check out the tail lights on this Trans Am)

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#12 Madman95

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Posted 30 November 2011 - 06:59 PM

i think those tail lights are ugly!!!

#13 GaryDoug

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Posted 30 November 2011 - 07:01 PM

Well i love my Trans Am and pretty much all kinds of PONTIACs and i thought people would like to check out these pictures and i don't have a camera right now or else i would putting up pictures of my own Pontiac.why are you asking?
(check out the tail lights on this Trans Am)


You should be aware that all these images will subtract from the size of the storage space you personally have available on this site. It is possible to delete them later but it's a pain to have to do that. It's your choice and nothing really wrong with that.
Posted Image
1998 Trans Am - LS1/A4 - all stock and almost all original - one owner - driven daily

#14 bgonzalez95

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Posted 30 November 2011 - 07:04 PM

i think those tail lights are ugly!!!


Yeah i think that they are not all that great but i like the idea that we can change the stock look to custom did you see that they added amber and switched the clear reverse lights .
check this out

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#15 bgonzalez95

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Posted 30 November 2011 - 07:10 PM

You should be aware that all these images will subtract from the size of the storage space you personally have available on this site. It is possible to delete them later but it's a pain to have to do that. It's your choice and nothing really wrong with that.


Ok good to know thanks




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