tapping sound
Thread Starter
Heel & Toe
Joined: Nov 2017
Posts: 15
Likes: 0
From: port st lucie florida
tapping sound
[QUOTE=biggiefl;1596071015]"don't know if I can do that with a throttle body."
Try Seafoam in the TBI...she'll smoke like its on
ok thanks I'll give it a try
Try Seafoam in the TBI...she'll smoke like its on
ok thanks I'll give it a try
Thread Starter
Heel & Toe
Joined: Nov 2017
Posts: 15
Likes: 0
From: port st lucie florida
Tapping sound
[QUOTE=biggiefl;1596071015]"don't know if I can do that with a throttle body."
Try Seafoam in the TBI...she'll smoke like its on fire
Does Seafoam clean the valves that way??
Try Seafoam in the TBI...she'll smoke like its on fire
Does Seafoam clean the valves that way??
Racer
Joined: Sep 2017
Posts: 452
Likes: 55
From: Marianna Fl
This sounds a lot like my LT1 Firebird did when I first got it running. The #8 conrod bearing spun and stacked both sides on the top end of the opening. Ended up pulling the motor and rebuilding it to the tune of just under $1,000. How is your oil pressure reading? failrf bearings usually produce a lower pressure readout
Last edited by Space387; Dec 3, 2017 at 08:42 PM.
Thread Starter
Heel & Toe
Joined: Nov 2017
Posts: 15
Likes: 0
From: port st lucie florida
Thread Starter
Heel & Toe
Joined: Nov 2017
Posts: 15
Likes: 0
From: port st lucie florida
Thread Starter
Heel & Toe
Joined: Nov 2017
Posts: 15
Likes: 0
From: port st lucie florida
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Drifting
Joined: Jan 2011
Posts: 1,853
Likes: 81
From: Hamilton Virginia
This is a 96 C4 LT1 at start up it is very quite, after 15 or 20 sec. a slight tapping appears and get's louder, when it gets louder it sounds like it's metallic. mainly on the drivers side. after the motor get's hot the tapping sound get lower and lower to a point after about 15 or 20 minutes it is barely noticeable. Turn the car off let it sit 10 or 15 minutes, start the motor a slight tap appears, then seems to go away.
Replaced al lifters with Delco push rods are straight appear to be ok. When listening to the motor underneath behind drivers side tire it is extremely louder. Also tapping sound seems to be in rhythm with the of the exhaust. Can any one point me in the right direction.
Replaced al lifters with Delco push rods are straight appear to be ok. When listening to the motor underneath behind drivers side tire it is extremely louder. Also tapping sound seems to be in rhythm with the of the exhaust. Can any one point me in the right direction.
Safety Car
Joined: Aug 2013
Posts: 4,427
Likes: 604
From: Minneapolis Mn
I think I remember reading where someone had noisy injectors, worth a check and see if they're making excessive noise.
Last edited by hcbph; Dec 21, 2017 at 11:00 AM.