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Just wanted to say thanks for the tips and advice!

Not too sure where to post this, but I've got a question for anyone that has worked in a shop doing alignments. I currently work at a small shop and we are getting a Hunter brand alignment machine. Unfortunately no one at the shop wants to be the "alignment guy" so the boss has picked me. I'm...

I found a bunch of random oil filters in a warehouse that were from the late 80s/early 90s and gave a couple of them (Frams to be exact) to a buddy with an old 70s GMC truck. He's been using them without any problems.

Originally Posted By: JustinH I consider everything at harbor freight disposable. ditto. Most of my HF tools are busted after multiple uses except the Central Pneumatic Earthquake 1/2 impact gun. That thing just keeps on chugging.

Amsoil MTF makes my 04 Civic Si shift like butter, but my 90 Civic would grind in 1st, 2nd, and reverse when using Amsoil. I drained it and used conventional 10w-30 and no more grinds. My buddy has a 95 Integra that would grind gears using Redline MTL, so he gave me the rest of his stash. I...

Originally Posted By: The_Eric I'm curious as to how you arrived at this conclusion? While obviously it was the cause of your trouble, it seems pretty unlikely. I stumbled upon a thread on a Honda-specific forum where a guy with the same car/engine swapped the exhaust manifold to the same...

Finally got it to pass smog and figured out why HCs were through the roof. The OEM exhaust manifold on this car was cracked when I bought it, so I thought I'd replace it with a cheap aftermarket piece. Something I never noticed was the aftermarket unit had the oxygen sensor bung in only one...

I had an Exide Orbital in my 04 civic from 2006-2012 that I scored from the clearance section at a Kragen for $25. I couldn't kill that [censored] thing. I used to park it with just the radio on (also powering an amp and subwoofers) for hours and it had no problem cranking over. I left an...

Originally Posted By: PandaBear Go rent a compression test tool and see how's your compression number and compare against the spec of the engine, and the difference between the cylinder. You may have head gasket problem or stuck ring if your numbers are off. When you replace the plugs, did your...

Originally Posted By: ltslimjim Seems like a mental check back over on the basics needs to be in order: Ignition/spark delivery, fuel, air...and of course mechanical however it is running. A recent oil change? Fuel pressure test? Sounds ignition or electrical related, possibly. You have the OE...

So I checked the CARB number on the cat and it checked out fine with the state number. I replaced the PCV "flametrap/oil catch can" black box thing along with the hose running to the actual PCV valve. I did a compression test and the numbers were 160 across the board. Nominal is 180 and...

Originally Posted By: Merkava_4 Maybe it's time for thicker oil if the oil consumption is 1qt. every 500 miles... I do have a jug of Maxlife 10w40 sitting around. Perhaps some 20w50?

Originally Posted By: JHZR2 A $180 cat is also likely not doing you favors (is it CARB approved)? My 91 BMW was failing NOx only, determined it to be a bad converter. Put in a generic and learned my lesson real quick - the numbers with the new generic were within a few ppm of the failed one on...

I appreciate all of the replies, everyone! Thank you! Please keep them coming! Any help is great! Originally Posted By: Vikas OP needs to summarize what has been done so far to the vehicle. I vaguely recall him mentioning burning substantial amount of oil. If that recollection is true, it is...

Originally Posted By: antiqueshell Techron Concentrated Fuel System cleaner. Do two treatments as directed in instructions. Also have you changed the air filter, and replaced the distributor cap and rotor, also make sure to clean out any oil residue from the throttle body and air intake...

Originally Posted By: Chris142 Change the oil and put new NGK plugs in it. Often if you change out dirty oil the HC will drop 20ppm or so. I can't explain why but it does. Thanks, but I changed the plugs two days ago with the correct NGKs. Oil & filter are only two weeks old.

Update: Per the advice of a smog tech, I replaced the coolant temp sensor and patched a tiny vacuum leak @ the throttle body. Got the cat really really hot and had it tested again. Passes no problem @ 15mph. At 25mph NOX is below average, CO is below average, but HC barely goes over MAX (MAX is...

Thanks for all the tips and opinions! I replaced the cat ($180 installed) and took it back for a pre-test. Nox numbers are now within spec, but HC got worse and CO stayed the same. I'm currently looking into swapping in a used lower mileage engine or trying the denatured alcohol / E85 trick that...

Originally Posted By: Scott_Tucker Looks like it's going to be mostly cat that fixes it. CO and HC will definitely be cleaned up. NOx should clean up with a cat too but it may be close. You say it has no EGR, but it shows the EGR functional test as pass, not N/A. Are you sure it has no EGR? The...

Originally Posted By: sunfire https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2327558#Post2327558 I'd love to replace the valve seals, but I don't have the time or money since I'm going back to school