Replaced all Vacuum lines but now..
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Junior Member
Joined: Apr 2007
Posts: 46
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From: Wilmington
Car: 1987 IROC-Z Camaro
Engine: LB9 305, edelbrock intake.
Transmission: 700R4
Axle/Gears: 10 bolt, 3.73 posi w/ disc brakes
Replaced all Vacuum lines but now..
I replaced all my vacuum lines on my 83 carbureted camaro. I'll have it turn over and start but after an idle at 1000 it starts to slowly rise and stop at 2500 rpm. Why is this happening? I usually wil lrev the engine and then the engine will go down to about 750 rpm steady. It'll then stay that way. I honestly don't know what could be causing this.
Supreme Member
iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: Replaced all Vacuum lines but now..
Choke might be sticking, or you've got a very large vacuum leak, presumably from a vacuum line
Slipped off somewhere? Do you hear any hissing sounds?
Slipped off somewhere? Do you hear any hissing sounds? Thread Starter
Junior Member
Joined: Apr 2007
Posts: 46
Likes: 0
From: Wilmington
Car: 1987 IROC-Z Camaro
Engine: LB9 305, edelbrock intake.
Transmission: 700R4
Axle/Gears: 10 bolt, 3.73 posi w/ disc brakes
Re: Replaced all Vacuum lines but now..
No hissing sounds that I can hear, and I checked all the vacuum lines and they're all connected and brand new. So you think the choke might be sticking? What would I use/do to get that choke to not stick anymore :P
Supreme Member
iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: Replaced all Vacuum lines but now..
If you rev the engine now will the idle drop?
I'm not familiar with the V6 carb, but take a look at the choke area and look for anything that doesn't look right I guess. Make sure it's plugged in, everything moves smoothly and all that.
I'm not familiar with the V6 carb, but take a look at the choke area and look for anything that doesn't look right I guess. Make sure it's plugged in, everything moves smoothly and all that.
Thread Starter
Junior Member
Joined: Apr 2007
Posts: 46
Likes: 0
From: Wilmington
Car: 1987 IROC-Z Camaro
Engine: LB9 305, edelbrock intake.
Transmission: 700R4
Axle/Gears: 10 bolt, 3.73 posi w/ disc brakes
Re: Replaced all Vacuum lines but now..
Right now I'm in class but when I do rev it from it idling at 2500 it goes right down to 750 RPM. Then sometimes when I rev it again it will stick at 2500 again and I'll have to rev it again to get it down to 750. I was thinknig something was sticking too but I wasn't exactly sure.
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