Hello,
1995 Chevy K2500 5.7 350 TBI with 4l60e trans. 131k miles.
I recorded a data log today on tuner pro on a loop from the house, and four short stretches going 55, 60, 65, and 70mph. I'm asking anyone who is willing if they'd be able to take a look and see if anything is out of normal parameters. Any information is very valuable as we've been kind of stumped.
Issues include:
-Oil consumption (1qt/~600mi)
-Black soot on tailpipe
-Very rich smelling exhaust
-Exhaust (visually) not steady but releasing in plumes
-Intermittently shaky idle.
Tested catalytic converter today and the outlet is hotter than the inlet.
We have replaced the pcv valve, coolant temp sensor and sender, thermostat, distributor cap, spark plugs & wires x8, MAP, EGR valve, and fixed a cracked vacuum hose on the charcoal canister.
Willing to try answering any questions and appreciate anyone able to help out.
Moss
1995 Chevy K2500 5.7 350 TBI with 4l60e trans. 131k miles.
I recorded a data log today on tuner pro on a loop from the house, and four short stretches going 55, 60, 65, and 70mph. I'm asking anyone who is willing if they'd be able to take a look and see if anything is out of normal parameters. Any information is very valuable as we've been kind of stumped.
Issues include:
-Oil consumption (1qt/~600mi)
-Black soot on tailpipe
-Very rich smelling exhaust
-Exhaust (visually) not steady but releasing in plumes
-Intermittently shaky idle.
Tested catalytic converter today and the outlet is hotter than the inlet.
We have replaced the pcv valve, coolant temp sensor and sender, thermostat, distributor cap, spark plugs & wires x8, MAP, EGR valve, and fixed a cracked vacuum hose on the charcoal canister.
Willing to try answering any questions and appreciate anyone able to help out.
Moss
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