vaccum leak???
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Joined: Jul 2003
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From: Huntington, West Virginia
Car: 1985 Camaro Z/28
Engine: L69
Transmission: 700r4
Axle/Gears: One-Wheel-WOnder 3.08
vaccum leak???
I've been having this problem for about 2 months: My car usually idles at around 750 rpm in park/600 in drive. Lately, my engine has been idling at around 500 rpm in park or drive. When it does this it lopes from like 600rpm to 300 rpm constantly. I have replaced the plugs, replaced the wires, checked the timing, cap, and rotor. Everything seems fine. The only thing left I can think of is a possible vaccum leak. I check all vaccum hoses for leaks and replaced the PCV valve. The only thing I noticed that was different was that there are "varnish-like"(if that makes sense) stains around the area where the carb and the manifold meet. Could I be losing vaccum there? Any input is appreciated.
By the way, my setup is a 305 LG69 w/ Holley 600 e-choke, MSD Distributer, 1" spacer, no smog, no cat.
By the way, my setup is a 305 LG69 w/ Holley 600 e-choke, MSD Distributer, 1" spacer, no smog, no cat.
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From: Dallas, TX area
Car: 91 Formula WS6 (Black, T-Tops)
Engine: 383 MiniRam (529 HP, 519 TQ - DD2K)
Transmission: Built '97 T56, Pro 5.0, CF-DF
Axle/Gears: 4.11 posi Ford 9"
Are you including the EGR in the no smog comment?
If not (and it really isn't just smog equip), could be a bad EGR from what I've experienced....
Otherwise, the vacuum leak or a bad fuel pump/filter. Those varnish stains shouldn't be there though. You may have a leak around the spacer at the manifold. I'd probably start there first.
If not (and it really isn't just smog equip), could be a bad EGR from what I've experienced....
Otherwise, the vacuum leak or a bad fuel pump/filter. Those varnish stains shouldn't be there though. You may have a leak around the spacer at the manifold. I'd probably start there first.
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