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01-22-2009, 04:36 PM
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#1
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Ticking/ tapping sound after driving awhile.
Kinda odd, the only other time I heard this sound was last thursday. Drove the car plenty since then and didnt hear it again til today right before I got home. It seems to do it when the car is warm and it wasnt nearly as loud as it was last week. When i hit the gas it gets very fast (kinda goes in sync w/ my foot pressure to the pedal if that makes sence) and when I come to a stop its a very slow tick/tap. I know the car has a small exhaust leak which im waiting for a part to come in but if it was that I would always hear it. Im far from a mechanic but when I lifted the hood it sounded like it was comming from somewhere near the intake or motor.
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-22-2009, 05:19 PM
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#2
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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Could be something in the top end. Check around the headers to see if there are any leakes there
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01-22-2009, 05:21 PM
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#3
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Join Date: Jul 2008
Location: Columbia
Posts: 928
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Sounds like a valve or lifter tapping.
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Praise the Lowered
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05' Silverado - Stock, stock, and stock.
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01-22-2009, 05:21 PM
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#4
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Quote:
Originally Posted by 69BirdX
Could be something in the top end. Check around the headers to see if there are any leakes there
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Yea I think its more valve/ rocker related ...Ive had a few Lt1's and ls1's and it doesnt sound like an exhaust leak
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-22-2009, 05:21 PM
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#5
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Quote:
Originally Posted by CHRIS67
Sounds like a valve or lifter tapping.
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yea thats what im thinking, whats involved in fixing it?
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-22-2009, 05:31 PM
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#6
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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well if it only happens after the motor warm it sounds like it most likely is. Have to take the valve covers off and inspect the rockers and pushrods. May be just a rocker loose
Last edited by 69BirdX; 01-22-2009 at 05:32 PM.
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01-22-2009, 05:35 PM
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#7
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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ok...i noticed one of the valve cover screws was loose so i guess thats a possibility
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-22-2009, 05:54 PM
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#8
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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Yea then it may just be that rattling around. Also check your plug wires. Is there any loss of power?
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01-22-2009, 06:00 PM
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#9
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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well i tightened it...the car feels strong...doesnt seem to be affecting power
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-22-2009, 06:05 PM
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#10
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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then its not a valve tap or rocker. You would feel a loss of power. Hoepfully that makes the sound go away. I want to check your car out didnt realize you put an ls1 into it till now lol
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01-22-2009, 06:08 PM
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#11
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Quote:
Originally Posted by 69BirdX
then its not a valve tap or rocker. You would feel a loss of power. Hoepfully that makes the sound go away. I want to check your car out didnt realize you put an ls1 into it till now lol
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yea anytime man....Not big on reading sigs huh hahaha
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
Last edited by MonmouthCtyAntz; 01-22-2009 at 06:10 PM.
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01-22-2009, 06:13 PM
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#12
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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I only looked at the mods ha ha
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01-22-2009, 06:19 PM
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#13
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10 Second Club
Join Date: Feb 2008
Location: Eatontown
Posts: 1,647
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Tighten your spark plugs. This happens to me about every 2000 miles, the tr55s I have start to back out and make the same ticking noise on and off, some times worse than other times. The ticking gets worse with acceleration then goes away after more acceleration because the car drowns out the noise.
It baffled the hell out of me since it started after I did headers, and I band clamped and tightened everything everywhere and the header bolts thinking it was exhaust leak.
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01-22-2009, 06:31 PM
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#14
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Yea now that you guys are bringing this up I think some sheeet just needs to be tightened up. I'll check all those things. I really dont feel any power fall off, the car pulled like a freight train this morning on that way to work.
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
Last edited by MonmouthCtyAntz; 01-22-2009 at 06:34 PM.
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01-23-2009, 08:32 AM
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#15
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Well the sound continued this morning. On tech there saying possibly bent pushrod,lifter problem, low oil pressure, and here someone said maybe something loose...I wanna rip my hair out lol ....
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-23-2009, 05:32 PM
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#16
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Check for an exhaust leak, check the exhuast manifold bolts. Very common for them to break on the early LT1. moost common is the one under the alternator and the driver's side rear.
Also check the anti-backfire valves on the exhaust manifolds, if they go bad they sound like an exhaust leak. Pull the rubber hoes off the exhaust manifolds and start the car, nothing should be coming out of them!
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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01-23-2009, 05:44 PM
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#17
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,213
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When was the last oil change and what oil are you running? LS1's will have some piston slap when cold but you shouldn't hear it when warmed up. Can you tell if it's coming from one side of the engine vs the other?
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01-23-2009, 05:51 PM
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#18
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
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Quote:
Originally Posted by Pampered-Z
Check for an exhaust leak, check the exhuast manifold bolts. Very common for them to break on the early LT1. moost common is the one under the alternator and the driver's side rear.
Also check the anti-backfire valves on the exhaust manifolds, if they go bad they sound like an exhaust leak. Pull the rubber hoes off the exhaust manifolds and start the car, nothing should be coming out of them!
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Tis an LS1....
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Quote:
Originally Posted by KirkEvil
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01-23-2009, 06:40 PM
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#19
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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Ls1s are lifters make noise when the they arent pressureized with oil. But once warmed up it should go away. If it increases rate with the gas peddle its def top end
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01-23-2009, 07:17 PM
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#20
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11 Second Club
Join Date: Nov 2005
Location: Hamilton Twp, NJ
Posts: 855
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Quote:
Originally Posted by MonmouthCtyAntz
Well the sound continued this morning. On tech there saying possibly bent pushrod,lifter problem, low oil pressure, and here someone said maybe something loose...I wanna rip my hair out lol ....
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I had a ticking noise and it turned out to be a rocker arm failure. Car started and ran fine, but one of the rocker arms has spilled its guts. I'd pull the valve covers and check the valve train. Check all the rocker arms, none loose? Check all the valves, pushrods etc. Eliminate the really harmful expensive stuff. Then move on the other stuff.
Hopefully its just something stupid.
Chris
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Last edited by 1QWIKBIRD; 01-23-2009 at 07:19 PM.
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01-23-2009, 08:55 PM
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#21
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Quote:
Originally Posted by JL8Jeff
When was the last oil change and what oil are you running? LS1's will have some piston slap when cold but you shouldn't hear it when warmed up. Can you tell if it's coming from one side of the engine vs the other?
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Synthetic Oil change last week 5w-10w 30 honestly cant remember been a busy week . Well aware of the piston slap its not that...Sounds like its coming from the intake....maybe more the driver side...not sure. Checked the exhaust manifolds last week and there was no signs of leaks...welded up a tiny hole near the pass. side cat. Ive had exhaust leaks on past LT1's and it doesnt really sound like that...Gonna have someone look at it tommorow. Thx for all your help guys...
__________________
AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
Last edited by MonmouthCtyAntz; 01-23-2009 at 09:03 PM.
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01-25-2009, 10:42 AM
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#22
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Quote:
Originally Posted by Shownomercy
Tis an LS1....
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DUH, Never mind!
__________________
93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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01-25-2009, 10:57 AM
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#23
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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Quote:
Originally Posted by Pampered-Z
DUH, Never mind!
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You arent the first... A board member and I took it for a spin yesterday and we think we narrowed it down to a possible lifter problem. Seems like a ton of others guys on tech have a similar problem w/ early ls1's. Guess were gonna tear into it Tuesday. If so I already found a good price on a ls7 lifter package . Odd but it takes about 15-20 minutes of driving until it starts, then it increases and decreases w/ rpms... then it seems to subside/go away..
__________________
AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-25-2009, 11:51 AM
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#24
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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Not a bad fix if you need help let me know. My garage is also heated so i could make room for a night or two
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01-26-2009, 07:14 AM
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#25
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Join Date: Jul 2008
Location: Columbia
Posts: 928
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I used to put some Marvel Mystry oil in a tapping engine when I changed the oil. It worked really good, but I'm not sure of any long term effects on the engine if any. Never held on to the cars that long afterwards.
__________________
Praise the Lowered
67' Camaro - Worked 327, Hotchkis TVS suspension, 4 wheel cross drilled discs, AM radio FTL
05' Silverado - Stock, stock, and stock.
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