Ok I'm new, ya, I know.
year: 1994
Make: Ls400(obviously because I posted in this section.)
266kish miles.
Where the issue began:
I got the car from my brother who, like an idiot, was I guess cleaning the plastic moldings with armour all . In turn the spark plugs were fouled and it has like no power. He also changed the leaky radiator which is why I drained the transmission and added new tranny fluid. (no I didn't use dex/mer. I'm not an idiot, I got spec fluid.)

The Problem:
No low end power and running rich.

The new:
8 Bosch Platnum +4 spark plugs
STP air filter
K&N Oil filter(havent changed oil yet because haven't checked compression)
(forgot brand) synthetic 5W-30 5-qt
Tranny fluid + lucas(1 bottle)

I tested the maf and got .7k resistance @ 78F which according to this:
https://www.clublexus.com/forums/ls4...ml?ref=esp-img
Means it's not up to spec.

What I am wondering is if: It's possible to clean the possibly dirty MAF(which didn't look dirty) and get a normal resistance test? Would a non-working/dirty o2 sensor be causing it to run rich?
Does anyone know what the compression numbers should look like?
I will be going up to advance auto to have the codes pulled or test them myself if I can find or are pointed to an appropriate page.
Thank you for looking
-Drew

 

First Problem I See are those Bosch Plugs..
Are the Wires in good Condition??
What About the Cap and Rotors??
Check Engine Light?
LexLS.com is going to help you a lot with all of the Tutorials.

 

http://www.lexls.com/tutorials/ you will need to pull the codes yourself. no you cant clean our type of MAF's.

 

I have 2 tests tomorrow but I'll jump on the issue either tomorrow night or friday.

 

did you check all the new plugs for spark? sounds like an ign issue...if the cap/wires/rotors are good, check the ignitors/coils.

 

turns out the issue is the cats. rode for like 40 yrds and they're beet red.

 

if they failed it's usually due to something killing them....dead cats (especially if BOTH die at the same time) are usually symptoms, not a diagnosis.