i have a 98 acura cl 2.3 (f23a1) i ran a compression test on it today and it came up as follows
1 175
2 185
3 185
4 168

I also ran a cylinder leak down test on it and came up with a rather small cylinder leak on cylinder number 4 at about 14% Still in the Low Green section of the gauge

the issue i was having was the Ecm is throwing a "Lean" code, but the rear of my car tells a different story, the timing is set Dead on
the car has 250k miles and pulled those compression and cylinder leak numbers. is that a good reading for the mileage?

 

Anyone? are these good numbers considering the mileage on the vehicle?

 

ALSO another issue im having with the car is the fact that at higher rpms, it tends to burn oil, ive pulled a plug to verify, and YES the plugs were ashy it threw a code p0171 System to lean
O2 sensor bank 1 sen 1 low circut voltage
and the
p0420 catalyst below threshold codes.
i ran a few diagnostics ran a custom data stream on my pegasyis unit and it looks like the 2 O2 sensors are virtually mirroring oneanother.
i ran the alldata checks, and went thru the list check fuel pressure, clean injectors BY HAND check regulator for being stuck ( open OR closed ) came across the Egr and found it to be MASSIVLY clogged i cleaned it out and took her for a ride, STILL Bellows Black smoke.
it ALSO blows blue smoke around 4500 rpms if i merge onto a highway and try to accelerate from oncomming traffic.

Any Ideas?

 

basic tune up? gaskets? just get a new motor, f23's are a dime a dozen.

 

well, if the motor is running the way it is now, i wouldnt wanna replace it. for 250k its running pretty good. buying a new motor isint an issue, but id rather just goahead and fix whats wrong with it as it is now and be happy with what i got. its pulling GREAT compression from what i was told at the dealer, and the leakdown test is Perfect, if not BETTER than many LOWER mileage engines. the EGR valve was Incredibly Stopped up so i cleaned it and reinstalled it and it runs 10x better. im thinking about pulling the intake itself and doing an through clean onit and sticking it into a HOTTANK and pressure washing it to make sure there is no Debris on it.