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Author Topic: I need help, bank fuel trims off please help me trouble shoot  (Read 14359 times)
vwaudiguy
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« Reply #15 on: March 03, 2017, 09:35:48 AM »

I would have tried to get the 02's closer to the heads. Take a look at 034's kit.
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spacecadet
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« Reply #16 on: March 03, 2017, 09:43:02 AM »

Yea, I'd change many things knowing what i know now :p If i cant figure this out would not be to big of a deal to move them. if i don't set it on fire first out of frustration
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spacecadet
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« Reply #17 on: March 03, 2017, 10:33:11 AM »

uh oh, just tested bank 1 and all 3 only @ 90psi.
« Last Edit: March 03, 2017, 10:46:39 AM by spacecadet » Logged
spacecadet
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« Reply #18 on: March 05, 2017, 12:51:01 PM »

small update. all cylinders are ~90psi and im about 99% sure my gauge is just off, hooked it up to 120 psi shop air it read 80 so thats less of a concern now.

Trying to get my block 093 codes within +-4 has been a struggle.

With the exhaust cam lined up perfectly centered on both banks i get 2,-8 no matter what.

I finally got 093 to 2, -3, but in order to do that i had to move the exhaust cam on bank 2 so that its not centered it lines up like this

[__]
^

right inside the outside edge, it seems like my cam chains are stretched and I'm not willing to risk it.

Some slightly positive news is at idle with 2,-3 the bank 1 02 went from like 20% to match bank 2's still not really that hopeful this will fix it, but i will get the timing withing +- 4 and will get new cam chains before going forward.
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vwaudiguy
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« Reply #19 on: March 05, 2017, 07:27:14 PM »

Are you popping the sprockets off the cams?
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AARDQ
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« Reply #20 on: March 05, 2017, 08:39:05 PM »

Were the heads shaved?
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spacecadet
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« Reply #21 on: March 06, 2017, 06:20:42 AM »

Yea crank pin in, pop cam pulley, grab and turn cam, tighten pulley.

Heads were decked but within Bentley spec.
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spacecadet
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« Reply #22 on: March 07, 2017, 06:39:01 PM »

Alright. New chains installed, and look good using the crank lock pin and bar.


unsure if LTFT will be corrected but hopeful.
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spacecadet
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« Reply #23 on: March 08, 2017, 09:19:21 PM »

cool timing is nice and set and not moving, after about 30 miles it moved to -2 -2 on each bank and has settled there.

Fuel trims are still ~4% off between banks. getting frustrated. Might take it some where with a smoke tester as I'm worried maybe the one i built is not up to snuff. If anyone has any other ideas, I'd appreciate.
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spacecadet
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« Reply #24 on: March 10, 2017, 05:33:31 PM »

my return fuel line was pinched. fixed and trims are now within spec.

stupidity tax
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