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1985 stock L98, No aftermarket equipment. 8k on new eng short block See below the readings I took from the DB1 port. I noticed the EGR reading is always 0. Is there anything here out of wack?
DB1 readings
Last edited by agillings; Jul 13, 2019 at 11:24 AM.
Reason: additional
1985 stock L98, No aftermarket equipment. 8k on new eng short block See below the readings I took from the DB1 port. I noticed the EGR reading is always 0. Is there anything here out of wack?
DB1 readings
Does any one know if these readings are correct I have other screen shots if needed
160 BLM is a concern, since this is the upper limit of positive correction. At least the INT is near 128, which indicates that the fueling is still somewhat under control with the BLM pegged.
Hi have a the service manual and can't locate the troubleshooting for high BLM
I have a new adjustable fuel regulator installed and 24 lbs fuel injectors. Can you suggest we're to start checking.
0% EGR is normal when you are not moving. Check your fuel pressure. If your fuel pump is not keeping
up or your regulator is set a bit low it may cause high BLMs. I'm no expert, but i've chased some lean issues
before. Check for vacuum leaks too.
New fuel pump assy new adjustable Fuel Regulator, new IAC, new throttle pos sensor, new Throttle Body and Bosh type III injectors no vac leaks. Removed air pump and welded close exhaust manifolds.
Last edited by agillings; Jul 15, 2019 at 08:35 AM.
Reason: add
What is your fuel pressure with the vacuum line removed? You seem to be on the lean side but not bad. You have what you need to
dial that in, logging software and an adjustable FPR. Raise the fuel pressure a little at a time til the BLMs come into line.
DB1 Readings
