Welcome Visitor! Please take a few seconds and 
The_Dealer
New Member
- Joined
- Jun 12, 2010
- Messages
- 1,543
- Reaction score
- 10
- Points
- 0
- Location
- Macon, GA
- Vehicle Year
- 1985
- Make / Model
- Duh!
- Transmission
- Automatic
85 b2 2.8 fm146 durasparked with a holley 350 carb.
I've been trying to tune my carb and have been having some prOblems getting the a/f ratio and idle right. Also I've been hearing a hiss under the dash that stops when I push hard on the brakes. Also when I do this the rpms drop drastically(don't have a tach so dunno how much they drop). I pulled the hose off the booster and plugged it and had a buddy start the rig and the idle was low(like when I push the brake hard and it drops), and the idle is nice and smooth. 1st off is this normal? I'm thinking I have a bad booster or check valve. What do u guys think?
I'm having part throttle surging and skipping but wot is fine. Getting crappy mpgs, and I'm getting lean af ratios even with a 61 jet. Others are running same setups with low to mid 50's jets
I've been trying to tune my carb and have been having some prOblems getting the a/f ratio and idle right. Also I've been hearing a hiss under the dash that stops when I push hard on the brakes. Also when I do this the rpms drop drastically(don't have a tach so dunno how much they drop). I pulled the hose off the booster and plugged it and had a buddy start the rig and the idle was low(like when I push the brake hard and it drops), and the idle is nice and smooth. 1st off is this normal? I'm thinking I have a bad booster or check valve. What do u guys think?
I'm having part throttle surging and skipping but wot is fine. Getting crappy mpgs, and I'm getting lean af ratios even with a 61 jet. Others are running same setups with low to mid 50's jets
Last edited:
