car running lean what could it be

[talontsi81]

we tried every sensor possible and nothing the only thing i didnt try was a knock sensor fuel filter and fuel pump its running lean and spits and sputters more when i build boost when im just idealing its fine any ideas

 

[xezerax]

More information would be great. What turbo/injectors/pump/fuel controller are you using?

 

[viprez586]

Boost leak test. That isn't a sensor .

 

[ztotheigg]

we tried every sensor possible and nothing the only thing i didnt try was a knock sensor fuel filter and fuel pump its running lean and spits and sputters more when i build boost when im just idealing its fine any ideas

Check for vacuum leaks, o2 sensor, Mass air flow sensor, fuel pump, and fuel filter. Those can all affect A/F ratio's.

 

[talontsi81]

16g turbo stock injectors stock fuel pump no fuel controller yet and we didnt find a boost leak 3inch mass air flow with translator

 

[Dert]

Did you check your spark plugs and at what gap they are at? Throw in a fresh set of NGK BPR6 or 7's gap to .028 and check your plug wires, and as stated above, do a boost leak test.

 

[viprez586]

How much boost are you attempting to run on a stock fuel system?

 

[talontsi81]

10lbs of boost i just put a head gasket on it and the plugs are brand new ngk bpr6 the gap is at 25