xt2005bonbon

Did your radiator begin leaking at the top seam?

Update... She did it again last night after she warmed up and I did a 2nd gear pull. Misfiring like crazy in #2 right after the pull, lots of negative fuel correct (-25%) and running super rich. Will check injector #2 tonight. Hopefully, it's just a failed oring..

Good to hear! Hope it'll stay that way. As for me, my random misfire on cylinder 2 came back right after this morning first pull . When it first happened (last week), I did swap coil packs as well as tightened the #2 spark plug which was definitely loose. It then ran fine after that. But for some reasons, crazy misfires happened again in that cylinder after the pull this morning. This time, I swapped spark plugs to see if the misfire will follow. #2 plug was already sooty, but I was able to clean it a bit (brand new spark plug). After that, did like ~10 3rd/4th gear pulls! Nothing. She purrs. Idle good. Trims good. So I still don't know if the plug is fouled or the injector is acting up.

I remember having a leak there after the rebuild. It was the hose connected to the thermostat. Clamp was loose. That'd be nice if that is your problem. Easy fix.

Keep an eye on how fast you are burning oil. Usually, a quart per OCI is considered OK per the internets . But a quart burned in less than 1k is definitely worrisome...

I HATE liars and thieves. Must have sucked real bad trying to prove the lies and confront the person.. Maybe you did not have to do the latter though. Still, it sucks.

Got a little scared last Saturday morning. Was planning to take the family on a little excursion in the desert. 5 minutes after we left, did a little 2nd gear pull and right after that, the car began to run real rough. With the BtSm app running, I was seeing lots of misfires on cylinder 2. Uh oh, did I bust the engine? That's what ran in my head. Parked the car, visually inspected the engine bay, etc... Nothing out of order. Fuel trims were fine. What could it be?? Started the car, ran fine, did another pull, ran like crap. Limped it back to the house. After further investigation, it was a slightly loose spark plug (I did change the spark plugs two weeks ago). I guess I did not tighten that one well enough. That was a little scary..

I may do the same on my next clutch replacement.

Nice work!

What do you use now? Just oem style bearing then? Any specific brand?

Please post what you are doing regarding injector scaling. This is something I have yet to 'play with', but found a very good video from HP tuner last night, using our platform (well, an STI) and ECUflash. -->

Nice work on your troubleshooting. So, what are you exactly doing in terms of tuning?

I changed all my ujoints with Duralast parts from AutoZone a few years back (65k miles+). I still do not suffer from vibrations. I'll post the part number when I find it. Part number is 2-0430dl.

ok. so coil pack plugs are good. Fuel trims are fine. Only one cylinder is misfiring now or all of them still? What does the misfire count per cylinder look like at idle for each cylinder? Also, how do your VVT angles look like? Are these at zero while idling and in sync under load? Is one lagging behind or completely off? If you have already checked your valve clearance and are sure these are in specs, then your leakdown test should only confirm/deny something wrong with the rings. At least that's my logic. I am assuming you are going to do a warm leakdown test? Oh, I also remember some guys who had their timing belt installed correctly, but it was running like crap. Culprit was at least one of the intake cam pulleys was not installed right, where it was misaligned with the camshaft dowel pin. As a result, timing was off and a bunch of other problems.

Your grille looks actually pretty nice. Are you planning to add the logo too?

SO, what's going on with the car? I think you may appreciate watching this video posted a while back by HP academy. Very well explained video of the basics about ECUflash and certain specifics about the Subaru platform.

The plugs I listed are the preferred OEM. I just bought two sets for my cars. I know you have a lot on your plate, but since you've been tuning and all, you should look into the BtSsm app to monitor things. Much easier than carrying a laptop around.

OK. What are your long term fuel trims now? Also, which plugs are you using? I have been using the NGK Laser Iridium Spark Plugs 7913 SILFR6A. Have always been reliable.

I have a Cobb intake on my 06. It came this way. I did have to fine tune the MAF scaling though. The car has been running fine for almost 10 years now with very good gas mileage. I should be careful saying that though . catless up, VF40, catted hiflow DP, 3" midpipe with stromung mufflers. She's loud!

This is what I posted on your original thread. Maybe that other thread should be deleted. --> wow. Lots of stuff going on here. Two things to check: 1. is the timing belt installed properly? Count the number of teeth between pulleys and check what the FSM says. Also, make sure the spacing for the timing belt guides follows FSM spec. Too tight and the belt can jump a couple of teeth = engine running like crap or not running at all. 2. I would also check valve clearance. It is possible that some valves (especially exhaust valves) are too tight. Also, pretty obvious but still: are white coil pack plugs installed to the front (cyl1/2) and black to the back (i.e Cyl 3/4)? Do you recall if the misfiring problem happened in all situation, or just at warm idle, cold idle, any rpm range?

Move on to what?

wow, that's pretty bad.

Amazing how these lithium batteries are that light. I installed a 60 Ah lithium battery where the spare tire is about 2 years ago for our fridge and portable shower. Sooo light it is ridiculous.

I first thought of coil, not necessarily spark plugs. could be that. Just checked my logs: last time spark plugs were changed, that was on, wait for it, Sep 2014 @ 127000 miles. I am now at 177K. Coils have not been touched since I've owned the car @ 120000 miles, except #3. Then again though, I always monitor the misfire count almost each time I drive and see nothing on all four. Weird.

Several years ago, I suffered from constant misfires on #2 in my 06 due to a tight exhaust valve. At that time, I was already using BtSsm and was monitoring the misfire pattern. I observed how the CEL would get triggered and when it would go away. I saw that if the misfire count was getting greater than ~30 for a few times in a row, the CEL would turn on. Then, if the misfire count would stay somewhat low (e.g. <10) and the engine would get turned on/off like 5-7 times, the CEL would go off. Now, I am sure the ECU may have been tracking how long the engine was running with low misfire count. Now, fast forward last month. My wife drove the car. Next day, I took the car and noticed the CEL is on: misfire on #1. Really odd. From that day, I carefully monitored the misfire count on #1: always stayed zero! Nothing. A month has passed, several turn on/turn off cycles, not sure the mileage, but the CEL never went away!! Car kept driving fine, nothing weird. Now, it's been lots of city driving, no long drives. Maybe that's a factor. In any case, got sick of it and finally reset the ECU. Anybody encountered this before?