2 MPG !!! Help!!!
Thread Starter
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
2 MPG !!! Help!!!
I just recently replaced my distrubtor gear. I set my #1 piston TDC before I re installed the distrubtor. I think I got the timing close to where it was orginally set. well i've dirven the car 50 mile over this weekend and I've gone through a half tank of gas. My car has never consumed this much gas. I did change my rear gear from 2.73 to 3.73 and my gas milage hasn't droped no where near what it is now.
Can anyone give me some feed back on what could cause this.
My Mods: 383 stroker, dart pro1 alum. 180cc heads, eldelbrock hi flo base intake, comp roller cam 474 lift, 1.6 int/ 1.5 exh RR, stock plenum ported to match 58mm TB, ECU chip by Avin.
Can anyone give me some feed back on what could cause this.
My Mods: 383 stroker, dart pro1 alum. 180cc heads, eldelbrock hi flo base intake, comp roller cam 474 lift, 1.6 int/ 1.5 exh RR, stock plenum ported to match 58mm TB, ECU chip by Avin.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
50 miles <==> 1/2 tank of gas!!!!
you must be smelling raw fuel going out your tailpipe, or black exhaust...with an very rich AFR ratio like that, what are your symptoms at idle, acceleration, cruise??
you must be smelling raw fuel going out your tailpipe, or black exhaust...with an very rich AFR ratio like that, what are your symptoms at idle, acceleration, cruise??
Thread Starter
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
I've taken my car to the track twice last week (best pass on a 1/8 mile 8.19 @ 89 mph), and from what my friends could see I had very very little black smoke during my run down the track. The fumes are really strong when I sit at a idle. My idle, and accelation is good. I'm going to back the timing down to 6 degrees. My fuel pressure is set at 43 psi. If I lowered the psi to say 36 or 35 will that balance the fuel mixture?
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Originally Posted by rssshen vette
I've taken my car to the track twice last week (best pass on a 1/8 mile 8.19 @ 89 mph), and from what my friends could see I had very very little black smoke during my run down the track. The fumes are really strong when I sit at a idle. My idle, and accelation is good. I'm going to back the timing down to 6 degrees. My fuel pressure is set at 43 psi. If I lowered the psi to say 36 or 35 will that balance the fuel mixture?
Thread Starter
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
My initial timing was set at 6 or 8 degrees. I think it's 8*. I back the timing back to 8* it was at 10*. I didn't change the fuel pressure just yet. I was just at the track a few hours ago for test and tune. I'll adjust the fuel pressure tomorrow and drive it around
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Advanced
Joined: Feb 2006
Posts: 99
Likes: 0
From: Overland Park, everett Kansas, mass
Originally Posted by rssshen vette
My initial timing was set at 6 or 8 degrees. I think it's 8*. I back the timing back to 8* it was at 10*. I didn't change the fuel pressure just yet. I was just at the track a few hours ago for test and tune. I'll adjust the fuel pressure tomorrow and drive it around