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1994 SB TBI pulse msec (rich)
So I just wanted to stress checking the mechanical as much as the sensors and what not. I ended up having a blown head gasket on the rig, that caused odd manifold vacuum and o2 readings, along with it misfiring, a quick compression test and a scope inside the cylinder. thanks for the insight...- Nitrousbob
- Post #6
- Forum: Engine Performance + Maintenance
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1994 SB TBI pulse msec (rich)
Thanks yall, and the o2 I didnt pay much attention too yet because it was in open loop, it is definitely a false lean according to that picture, but I do remember looking at the scan tool and seeing it say rich when It was running so I will recheck, I logged it while it was running and I need to...- Nitrousbob
- Post #4
- Forum: Engine Performance + Maintenance
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1994 SB TBI pulse msec (rich)
I am working on a friends rig for his daughter, It is running rich and fouling plugs like crazy. I have checked the map sensor on the bench against a known good one, the coolant sensor, tested the fuel pressure (11-12psi), put in new plugs and gapped them (fouled again), got timing at 0deg...- Nitrousbob
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- Replies: 17
- Forum: Engine Performance + Maintenance
