BUILD THREAD SBC RUNNING RICH

[TODD WILSON]

I have a built sbc 355 and it running off a Holley sniper efi 1 the car is running really rich it been sitting since December I just started to crank it up these past couple months any tips or trips to fix the issue (I bought the car with the sniper already on)

 

[Mechanic Nerd]

I have a built sbc 355 and it running off a Holley sniper efi 1 the car is running really rich it been sitting since December I just started to crank it up these past couple months any tips or trips to fix the issue (I bought the car with the sniper already on)

Whats your afr's reading?

 

[Mechanic Nerd]

I have a built sbc 355 and it running off a Holley sniper efi 1 the car is running really rich it been sitting since December I just started to crank it up these past couple months any tips or trips to fix the issue (I bought the car with the sniper already

IF confirmed the afrs are running rich, couple things i would be looking at is the other info for the sniper. Make sure temp and timing arent way out of wack and the fuel pressure regulator is working properly. Id also check and make sure the plugs arent all fouled up! If that stuff looks solid you may have to just out it into "learning mode" and let it kinda recalibrate. I have to do that from time to time. Mainly this time of year with huge temperature swings.