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Set 3. Engine: After an ECU reset with some immediate driving. Testing done on a cooled engine a while later with thought to capture ECU resetting the idle etc. Wish I had thought of that earlier; however, this still shows some of the process.

Set 2: Fully warmed up engine. Various captures from recordings, shown in sequence, of full acceleration testing. Most are multiple gear changes (see RPM to see how many gear shifts).

Set 1: Fully warmed up engine. Various tests both stationary and moving without the scan tool doing a recording.

New data and More scan tool captures. New Data: Fuel pressure measures within spec and does not drop when the engine is running. Spark gap testing: All four coils will jump a 2cm gap, which is supposed to be about a 30kv output. The jumps are more orange/red than blue; so, not full power...

Will do. Will post back in a few days.

Thanks everyone, this project is done. Shortly I'll be doing the transmission fluid and filter. That one I've done many more times; so, hopefully no further goofs! By the way, the filter came with a reasonably thick rubber gasket. The Mfg. used RTV and that's what I've done in the past...

Marginal benefit. On our car, the filter holder is mostly like a cap and seems to contain the oil diverter valve. Its only about 1/4 as deep as the filter is tall. So, it is NOT large enough to hold all the oil in the housing (dumb design!). Because of that, if you don't open it first a...

Absolutely. It took an 18" wrench and a rubber mallet to get it loose! All done now

LOL! It has been so long since I did it myself I had remembered the oil draining from the filter plug. Yes, I've found the pan drain now. This is so embarrassing I want to delete the thread! At any rate, the discount oil folks must have put the drain bolt back with an impact wrench. I...

I'm trying to change my oil this morning on a 2007 Mazda 3 2.3L engine. Removing the plug from the filter cartride drained just a bit of oil. Then removing the filter drained a bit more. Probably around 1 quart. It was coming out as a drizzle towards the end but still was normal viscosity...

Thanks. You might have missed them....the images which show 2:58 and 3:09pm, on the top left corner, are hard accelerations. 2:58 shows full throttle accleration from stop signs, first gear only. The 3:09 one shows full throttle from stop with a gear shift from 1st to 2nd. Both show...

Here's the second set (different day)

Here's the first day's tests

On to performance question... First, thanks everyone for the advice. I think I have my oil question answered but still wonder about the overall engine performance. Since a bunch of you seem to have the right knowledge, I’d like to get feedback on the sensors and engine performance. Apologies in...

Cam lobe follow-up. Yes, clearly something there. It cannot be felt with a finger tip. Should I be concerned?

So, now that the engine is cooler, I'm certain that the cam is very smooth to the touch despite appearing to have a visible sideways wear.

Well, I had hoped that what was shown in the previous photo was actually a reflection of the opening. No such luck. Here's a new photo. When this was taken it was still too warm to touch for long. So, I'm not certain whether what is visible is large enough to be felt. Later when it is...

Yeah, that does not look right. I won't be able to look at it again until tomorrow; but, that's now at the top of my weekend list.

Here's some photos looking in through the oil fill cap. While this is not an area of expertise for me, considering this is the end of an OCI, I'm guessing it is pretty clean. Is that the correct assessement?

Based on some of the comments, I just cleaned the MAF. By eye it appears clean, same when viewed with with a low power magnifying glass; however, one of the two resistors wires are more reflective. It appears to have a bit of abrasion on it when viewed by eye and with the magnifying glass...