I am about at the end of ideas. I have a 91 S10 Blazer 4.3 4x4. It has developed a misfire/rough idle and now occasionally stalls.
Misfire seems to only be noticable at idle to 1/4 throttle.
Stall happens in reverse usually at low speeds or at a complete stop with my foot on the brakes.
Whats been replaced within the last 6 months:
-Cat removed & Flowmaster exhaust installed
-Map
-TBI rebuild
-O2
-TPS
-EGR
-All vaccuum lines have been ziptied into place
-Plugs
-Wires
-Cap
-Rotor
There are a few other odds and ends that are not coming to mind. All parts have been replaced with new. All TBI attached sensors have been replaced.
I am sucking oil into the TBI on occassion or so it appears.
Any ideas on where to go next?
Misfire seems to only be noticable at idle to 1/4 throttle.
Stall happens in reverse usually at low speeds or at a complete stop with my foot on the brakes.
Whats been replaced within the last 6 months:
-Cat removed & Flowmaster exhaust installed
-Map
-TBI rebuild
-O2
-TPS
-EGR
-All vaccuum lines have been ziptied into place
-Plugs
-Wires
-Cap
-Rotor
There are a few other odds and ends that are not coming to mind. All parts have been replaced with new. All TBI attached sensors have been replaced.
I am sucking oil into the TBI on occassion or so it appears.
Any ideas on where to go next?