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WTF am I missing?

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Old Jun 5, 2017, 10:53 AM
  #31  
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Originally Posted by kaj

Yeah, that's what I figured. It felt like popping an IC coupling.. but since they are all still on, I guess it would have had to be fuel cut. The log supports that, from what I can tell, though I'm not sure.
It's not fuel cut. Injector pulse width goes to zero during a fuel cut event.
Old Jun 5, 2017, 11:21 AM
  #32  
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I can 100% guarantee I did not drop a rag into my IC piping, air inlet, etc.

The car did a 3rd gear pull perfectly. On the next pull, I heard the pop and the car lost all power. Got on the gas and it did it again. After that, the pull are without incident but 'Been rich ever since.

Not a rag, but I appreciate the suggestion. It's always the weird, unexplained things that cause problems and we never think of them LOL
Old Jun 5, 2017, 11:35 AM
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Originally Posted by kaj
I can 100% guarantee I did not drop a rag into my IC piping, air inlet, etc.

The car did a 3rd gear pull perfectly. On the next pull, I heard the pop and the car lost all power. Got on the gas and it did it again. After that, the pull are without incident but 'Been rich ever since.

Not a rag, but I appreciate the suggestion. It's always the weird, unexplained things that cause problems and we never think of them LOL
Ok, I misunderstood. I thought the original issue was persisting.
Old Jun 5, 2017, 11:42 AM
  #34  
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Just the running rich part.
Old Jun 5, 2017, 10:11 PM
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Originally Posted by kaj
Just the running rich part.
Is it still spooling slow?

If it's running rich, may just need to adjust MAF scaling or the fuel table, or something fueling related (consult your tuner lol). The new MAF may read slightly different than your old one
Old Jun 6, 2017, 12:26 AM
  #36  
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Originally Posted by letsgetthisdone
Is it still spooling slow?

If it's running rich, may just need to adjust MAF scaling or the fuel table, or something fueling related (consult your tuner lol). The new MAF may read slightly different than your old one
Yes. I found a possible cause. Fixed. We'll see, now. If all is the same, I'm just going to start leaning out the fuel tables.

Old Jun 6, 2017, 05:48 PM
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Originally Posted by kaj
Yes. I found a possible cause. Fixed. We'll see, now. If all is the same, I'm just going to start leaning out the fuel tables.

This didnt show up on the BLT
Old Jun 6, 2017, 07:12 PM
  #38  
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Originally Posted by 4G63_EVO
This didnt show up on the BLT
Bacon, lettuce, and tomato?

Replaced the coupling. No change.
Old Jun 6, 2017, 07:20 PM
  #39  
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Originally Posted by kaj
Bacon, lettuce, and tomato?

Replaced the coupling. No change.
Boost, leak, test.
Damnit, was hoping that would be the gremlin
Old Jun 6, 2017, 07:30 PM
  #40  
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me too LOL. That would be too easy.

​​​​​​Maybe it's leaking from a vacuum line after the TB.
Old Jun 6, 2017, 07:51 PM
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Have you run a compression test?

Need to simplify it, I spend all day working on cars, it's way too easy to think of something complicated. Engine is air, fuel, compression.

Boost leak test shows nothing, rule that out. Maf readings are same pre and post issue correct?

Keep in mind, air can mean in and out. Do you run a cat on the car? It hasn't come loose and clogged exhaust or something, right?

BTW, sorry these are random rambling's, but are all potential clues/causes.
Old Jun 6, 2017, 09:06 PM
  #42  
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Compression was perfect a week ago; I checked after break in.
I don't have MAF readings from before, but they are normal now.
No cat on the car.
Old Jun 6, 2017, 09:14 PM
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Checked cam timing?
Old Jun 6, 2017, 09:48 PM
  #44  
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Timing belt jumped? Hmmmm...
Old Jun 9, 2017, 12:11 AM
  #45  
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Update:

viewed logs again. I used to reach 290 load and now I'm in the 305-310 area. Sounds like a boost leak to me, but I've tested at the turbo inlet and the TB. I have yet to find any leaks ANYWHERE. Especially enough to cause a 200-250RPM difference in spool time.


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