Hi, sorry to hear all the trouble with your maintenancce work.
If you search you will see for some reason these LT1's don't like Bosh stuff too much, like plugs and O2 sensors. So you are rolling the dice there.
Also the B-body MAF is sensitive and oiling the air filter is tricky as when you suck in air some oil can get on MAF and make it very unhappy. Rolling the dice again unless you are aware of this and were not generous with the oil.
Keep in mind PCM sees 2 4bangers and not one V8 so that may help you track down the issue. May want to check PCM for codes as not all will turn the CEL on.
When you pulled each plug wire on DR side while car running you saw spark on the end ?
I'll go check the vids now.
Thank you for the reply!
Perhaps its the bosch plugs. Doesn't seem to be one cylinder though but maybe it is. I also didn't pull them while the engine was running and it was very sunny so I couldn't see any sparks.
I was rather generous with the air filter oil but wouldn't a dirty MAF sensor cause all the cylinders to miss, not just the driver side?
I bought a cheap $20 code reader on amazon but i either have no codes or it doesn't work. The CEL light does not flash but the fans do come on when i plug in the device and turn the key on (not stating the engine). The ABS feature did seem to work and code 12 was coming up but lets not worry about that for now. This is the reader I used but will be returning it.
INNOVA 3123 GM OBD1 Code Reader https://www.amazon.com/dp/B000EVU8C0..._8aqtDbXWSFKQG
There is a a chance your fresh air filter oil has contaminated the MAF. Remove the filter, clean the sensor in the MAF. Don't touch it, use the correct CRC spray. No brake cleaner! Once clean, reinstall, make sure facing the right way, and start it without the filter. See if there is an improvement.
Thanks for the reply!
When i got the car the MAF sensor doohickeys were all totally covered in dirt or something. I cleaned them with a brush and it seemed to make no difference as the car was running fine before despite the dirt. I will get correct spray and try cleaning it but i dont see how only the driver side would be affected by a dirty MAF sensor.
Boy, did you and this OP both go out recently and kick a puppy? lol
You both got dam near identical grief right now, even down to the aforementioned likely infamous "too much filter oil got on the MAF" thing. I hope Head- sees this to make sure his is cleaned and the sensor is installed in the correct direction. Regrettably all too often I've found the work I just done did is the (at least round-about) cause of a current gremlin.
This is especially not limited to work you've done. The part about "...suddenly
running awful after getting my AC recharged." Cause, correlation or coincidence. :: squinty eyes ::
Thank you for this thread! Some how I didn't find this in my search. Seems i cant get the forum search to work well for me but google did return some useful results. Unfortunately it doesn't seem he ever figured out the solution 😕 and so far my car has not failed to start since this issue arose.
As for cause, correlation, or conicidence. Seems like conicidence to me except maybe I fried something with the brake cleaner, the O2 sensor is not connected properly, or the knock sensor wire being nearly bare is causing an issue. Could be the MAF or plugs but I suspect the MAF sensor would cause both banks to mis, and the plugs are supposed to be good plugs but this doesn't mean anything, just my intuition. My headers make pulling the plugs a bitch for cylniders 5-8 so I hope its not these ones lol