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Old 05-08-2017, 07:31 AM   #11
Hotwire
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I don't think so? That was the first thing I checked when I heard it running, I changed it about 1k miles ago, smelled ok with no smell of gas.

Remember, I replaced the regulator but still had the problem, think I got a false read on what was going on, but the rear of the intake was wet and 3,5,&6 were streaked/clean. I had swapped out the FPR when she first got it, might still have been clean from that? :dunno..

I had HPTuners hooked up and reset the ltfts before the MAF swaps.

She's been throwing miles on it this weekend and I haven't got a call, will update when drama ensues.
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Originally Posted by Teeleton
Hot wiring is bad news.
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Old 05-12-2017, 07:56 AM   #12
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Update, she's been keeping the tires turning on it so I haven't had a chance to check the split, might get a chance this weekend. Replaced the air filter and pcv, runs like a well seasoned 4.3 is supposed to, stutter has disappeared too.

Thinking she was dumping fuel from a ruptured regulator and possibly fouled plugs? Only thing I didn't check and could have been the culprit to the stutter? Feel stupid after all the knee jerk items, but never thought it could have gotten that bad..

It's rolling now, running better than it ever has, and no drama calls.

One word to anyone listening, DO NOT BUY THE $30 NAPA IDLER ARM! Pos is as loose as the one I just took off..
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00 ZR2 Extended cab (8BenZR2/Angus), 4wd, Beater Extraordinaire
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Quote:
Originally Posted by Teeleton
Hot wiring is bad news.
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Old 05-12-2017, 06:32 PM   #13
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Could be plugs loaded up I guess. I'll bet the regulator was the root cause which gave you secondary problems.
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Old 05-15-2017, 08:17 AM   #14
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Lol, man, it rears it's ugly head again..

Was told yesterday amid Mother's day festivities that "it was fixed until you replaced that thing, now it's doing it again." Translated, ran ok until I replaced the pcv and air filter.

Hope she has fire insurance. but, to be continued, going to get into it tonight. Going to datalog, swap ecm, check plugs, possibly pull wiring harness and scrutinize, then buy 5 gallons of gas and a windproof lighter.
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Originally Posted by Teeleton
Hot wiring is bad news.
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Old 05-16-2017, 06:46 AM   #15
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try an injector balance test with HPtuners.

Took me like 6 trys but it was a weak or sticky injector that was causing a random cylinder 4 miss on a truck i tuned recently. it wouldn't throw a code, but you could feel it miss and it would log 8-10 on the scanner then be fine for a while.
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Old 05-16-2017, 09:05 AM   #16
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I had an injector pod in the shed w/ low miles and one bad injector (newer style). I replaced that injector with one off her old pod w/ new o-rings (cyl1). So it's got 5 "new" injectors, all impedances check good. I turned off each injector/cylinder w/ hptuners trying to find the misfire but didn't have any luck.

Haven't got a chance to get on it, she's been driving everywhere and never home, so it must not be that bad.

Just trying to figure out the common denominator to cause a p0300, covered air, covered common spark, covered fuel.. only thing left is exhaust? Well, egr..

I'll update when the wheels stop turning.

*EDIT* I thought cyl balance was factory programmed, thought you needed EGT / individual wideband to set the cylinders correctly?
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08 Hybrid Tahoe (Tin Foil) 2wd, 6.0, stock and very comfortable
11 Ford Edge (BlackBerry) 2wd V6, Limited, wife's
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Quote:
Originally Posted by Teeleton
Hot wiring is bad news.
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Old 05-16-2017, 06:44 PM   #17
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Tech2 can balance test injectors, not sure about HP tuners. It fires each individual cylinder with key on engine off. You put a fuel pressure gage on, prime the system, record pressure, fire the injector, record pressure drop go to the next and repeat then compare all cylinders.

GM also has a stand alone on-car injector flow tester that's a little more involved.
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'91 Z70 Bravada lowered 4" 350 Vortec w/TBI, TCI-700r4, KYB's, 9C1 cop car steering gear, rear sway bar, yada yada...
'05 Subaru Legacy wagon (wife's daily)
'04 Subaru Forester XT EJ255 turbo, TBE, lowered 1.5" w/springs
'03 Subaru Outback
'92 K3500 4x4 dually dump, 454, 8' plow sander/spreader
'02 K2500HD single cab 6.0 4L80E

To help support this site with a donation click here
My cardomain site
Quote:
"The spirit of resistance to government
is so valuable on certain occasions,
that I wish it to be always kept alive.
It will often be exercised when wrong,
but better so than not to be exercised at all.
I like a little rebellion now and then." -Thomas Jefferson (1743-1826)
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Old 05-25-2017, 09:54 PM   #18
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Angry

Wheels stopped. P0303, cyl 3 solid misfire. Started to pull the plugs on driver's side, #3 fun. Tried to pull the steering shaft, it's blocked by the damn air pump check valve.

Got discouraged so went another direction.

http://i778.photobucket.com/albums/y...ps8jextgoo.jpg

http://i778.photobucket.com/albums/y...psxx2nkbtb.jpg

Both rear coolant ports had at least 1/4" sludge pucks built up, both gaskets completely trashed. I could see possibly #1 misfiring due to gasket failure but it's calling out 3.

I could see sludge built up around driver's front coolant port dripping down onto lifter tray. Going to throw the intake back on, stab distributor, and do compression check after I pull the plugs.
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08 Hybrid Tahoe (Tin Foil) 2wd, 6.0, stock and very comfortable
11 Ford Edge (BlackBerry) 2wd V6, Limited, wife's
00 ZR2 Extended cab (8BenZR2/Angus), 4wd, Beater Extraordinaire
98 Habanero 2, 5.3L L33 V8 swap Click for project SOLD
Quote:
Originally Posted by Teeleton
Hot wiring is bad news.
Teeleton

Last edited by Hotwire; 05-26-2017 at 08:21 AM.
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Old 05-26-2017, 11:36 AM   #19
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holy crap!
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Old 05-26-2017, 06:16 PM   #20
mkgearhead
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Typical OE gaskets. New ones should be metal composite if I recall.
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'91 Z70 Bravada lowered 4" 350 Vortec w/TBI, TCI-700r4, KYB's, 9C1 cop car steering gear, rear sway bar, yada yada...
'05 Subaru Legacy wagon (wife's daily)
'04 Subaru Forester XT EJ255 turbo, TBE, lowered 1.5" w/springs
'03 Subaru Outback
'92 K3500 4x4 dually dump, 454, 8' plow sander/spreader
'02 K2500HD single cab 6.0 4L80E

To help support this site with a donation click here
My cardomain site
Quote:
"The spirit of resistance to government
is so valuable on certain occasions,
that I wish it to be always kept alive.
It will often be exercised when wrong,
but better so than not to be exercised at all.
I like a little rebellion now and then." -Thomas Jefferson (1743-1826)
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