Engine Knock
01-31-2001, 12:58 PM
#1
Senior Member
Thread Starter
iTrader: (1)
Join Date: Jan 2001
Location: Fresno, CA
Posts: 948
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Z28
Engine: LT1
Transmission: T-56
Engine Knock
I am by no means an expert mechanically at ALL heh but my engine seems to knock as I accelerate.. only accelerating not idling or decelerating... any ideas?
------------------
Edelbrock 14x3 OE intake, Hypertech Chip, Street & Strip shift kit, flowmaster exhaust w/ high flow catco cat.
------------------
Edelbrock 14x3 OE intake, Hypertech Chip, Street & Strip shift kit, flowmaster exhaust w/ high flow catco cat.
01-31-2001, 02:23 PM
#2
you might be hearing an exaust leak.
------------------
-Tas
'89 Formula WS-6
[soon to be Torch Red with black hood and headlights =) ]
305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....
Super GRK_Taz World
EFI & Intake Options
AOL IM: superGRtaz
ICQ 82881207
------------------
-Tas
'89 Formula WS-6
[soon to be Torch Red with black hood and headlights =) ]
305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....
Super GRK_Taz World
EFI & Intake Options
AOL IM: superGRtaz
ICQ 82881207
01-31-2001, 05:26 PM
#3
Member
Join Date: Oct 1999
Location: Cincinnati,Ohio,Usa
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
Yeah, a small hole in the exhaust near the engine will make that sound. On my 94, I once thought I had a lifter ticking, only to find it was a header gasket leak. In fact, before I looked for exhaust leaks, I scanned it and noticed a huge amount of retard under the part to full throttle. Turned out that it was fooling the knock sensor into hear "false" knock.
------------------
Jerry
-------------------------
89 RS Lt Blue T-Tops T5
355 Crate, Compucam 2040
Pst Front Hotchkis Rear
Edle. TES 3" Flowmaster
Harwood hood, bla, bla, bla...
94 Z28, LT1 6M, Black
Most of the bolt-ons
-------------------------
------------------
Jerry
-------------------------
89 RS Lt Blue T-Tops T5
355 Crate, Compucam 2040
Pst Front Hotchkis Rear
Edle. TES 3" Flowmaster
Harwood hood, bla, bla, bla...
94 Z28, LT1 6M, Black
Most of the bolt-ons
-------------------------
02-02-2001, 09:36 PM
#4
Junior Member
Join Date: Jan 2001
Location: VA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
I would almost guarantee that your engine is out of time. That is what all the books say would be the problem.
------------------
1985 TransAm BLK/GLD Stock
1985 TransAm BLK/BLK
305HO (soon as it is put in) 5-speed, 3.27 posi, WS6, power everthing.
http://www.geocities.com/bullfrawgs
------------------
1985 TransAm BLK/GLD Stock
1985 TransAm BLK/BLK
305HO (soon as it is put in) 5-speed, 3.27 posi, WS6, power everthing.
http://www.geocities.com/bullfrawgs
Thread
Thread Starter
Forum
Replies
Last Post
