HP Issue i've had for a while now... Help?
10-08-2013, 02:13 PM
#1
Member
Thread Starter
Join Date: Oct 2011
Location: Paris Texas
Posts: 344
Likes: 0
Received 2 Likes
on
2 Posts
Car: 91 Camaro RS, 84 2.8 5speed
Engine: 305 5.0L
Transmission: Auto, 5 speed
HP Issue i've had for a while now... Help?
Alright. So I have a 1991 Camaro RS, its a 305 carb'd. Originally TBI. Since I got the car a few years ago, I haven't really done much to it. Anyway, when started up in the mornings and left to idle down, when I get in and stomp the gas, the car has some decent power. After a run to the store and to a friends house or any few little trips in a row, i try to hit the gas and i hear a faint ticking with hardly any HP trying to push the car any faster (around 50-60 mph).
So what would cause that? Am I leaving anything else out that needs to be known? I need help lol
Edit:The ticking sounds like a belt or chain slipping, idk, it's really hard to describe.
So what would cause that? Am I leaving anything else out that needs to be known? I need help lol
Edit:The ticking sounds like a belt or chain slipping, idk, it's really hard to describe.
Last edited by Jk_Under; 10-08-2013 at 02:22 PM.
10-10-2013, 06:28 AM
#3
Supreme Member
iTrader: (26)
Join Date: Nov 2002
Location: Moneta, VA
Posts: 2,108
Likes: 0
Received 5 Likes
on
5 Posts
Car: 89 formula 350
Engine: ls1 magnuson tvs2300 supercharger
Transmission: T56
Axle/Gears: 4.11 Dana 44!
Re: HP Issue i've had for a while now... Help?
your description is real vague...sorry. maybe a video would help
10-10-2013, 12:48 PM
#4
Senior Member
Join Date: Mar 2005
Location: Sacramento, California
Posts: 992
Likes: 0
Received 1 Like
on
1 Post
Car: 92 RS
Engine: a slow one
Transmission: a crunchy one
Axle/Gears: a whiny one
Re: HP Issue i've had for a while now... Help?
Could be anything from an exhaust leak to a bad timing or ignition component. With the info provided, anyone that answers is basically throwing a rock into a pond and hoping it hits a fish.
10-13-2013, 02:01 PM
#5
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: HP Issue i've had for a while now... Help?
This is a really long shot, but could it be that your vacuum advance is routed to ported vacuum through a thermal vacuum switch? I'm assuming you're running a distributor with vacuum advance, and if so, the hose to the distributor's vacuum-advance should be running directly to intake manifold vacuum, and absolutely nothing else. Not ported vacuum, especially not on an LO3. I know, I converted my old '91 RS LO3 / auto from TBI to Q-Jet / HEI just weeks before parting it out. Part of the problem I had when it was TBI was that it always went into limp-home mode due to detonation, probably carbon deposits in the combustion chambers. Had to disconnect the battery for 30 seconds to get normal driveability back. But after converting, the power and driveability both suffered dramatically compared to TBI working as intended. When it was TBI, I did try replacing the timing chain, and I regret that. I should have bought a 3-keyway timing set and installed it with the cam 4 degrees late. The new chain didn't help low-end anything, even after re-setting the timing, but really hurt the upper-RPM dramatically.
Thread
Thread Starter
Forum
Replies
Last Post