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Old 11-07-2020, 02:23 AM   #15
s3rics213
 
Drives: 2019 1LE/ss 2014 ss/rs summit white
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Quote:
Originally Posted by Baddawg53 View Post
When I installed my headers I put a hairline crack in 1 plug, super hard to see. It was doing exactly what you described. Miss at WOT. I changed all 8 and the issue went away.
I’ve changed all the plugs so 🤷🏻*♂️ I’ll look them all over again tomorrow. 3,4,6 are having miss fires and it’s more on 3 and 6 from what I’m seeing. Just seems weird it’s staying on those ones even with swapping plugs.
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Old 11-07-2020, 08:43 AM   #16
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When I had misfires, turned out to be corrosion on the coilpack connectors. Maybe check those.
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Old 11-07-2020, 10:06 AM   #17
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Recheck ALL CONECTIONS...
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Old 11-07-2020, 07:05 PM   #18
s3rics213
 
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Originally Posted by avalonandl View Post
Recheck ALL CONECTIONS...
All the connections are good. I’ve checked them more than enough. Not connection issue for the packs, wires, plugs, injectors. Haven’t pulled the injectors yet.

No intake leaks It’s just the same ones over and over even with swapping stuff put some injector cleaner through the engine to see if that’s the cause and didn’t change anything either.

Tune at least from my tuner haven’t solved anything. He sees everything looks good other than the misfires.
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2019 ss/1LE d1x, LT4 fuel System, Triple meth nozzle, ported BTR, 2” Texas speed headers, Built 377 SPDC motor, CTporting heads, TooHighPsi port system, SMG aux.
1014/800 on E55/meth
890/750 on 93/meth
Working on tuning the port system for full e.

With questions just message me here for a faster response. https://www.facebook.com/eric.willia...ibextid=LQQJ4d
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Old 11-07-2020, 07:35 PM   #19
Brianw36
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I have seen where broken valve springs could be causing this issue. Seeing you checked all electrical stuff, You might want to pull valve covers and check.
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Old 11-07-2020, 10:33 PM   #20
s3rics213
 
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Originally Posted by Brianw36 View Post
I have seen where broken valve springs could be causing this issue. Seeing you checked all electrical stuff, You might want to pull valve covers and check.
Going to pull injectors and see tomorrow and might do that also to then.
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2019 ss/1LE d1x, LT4 fuel System, Triple meth nozzle, ported BTR, 2” Texas speed headers, Built 377 SPDC motor, CTporting heads, TooHighPsi port system, SMG aux.
1014/800 on E55/meth
890/750 on 93/meth
Working on tuning the port system for full e.

With questions just message me here for a faster response. https://www.facebook.com/eric.willia...ibextid=LQQJ4d
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Old 11-12-2020, 05:35 PM   #21
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Originally Posted by s3rics213 View Post
Going to pull injectors and see tomorrow and might do that also to then.
Injectors cleaned issue still persists. Also compression test was good. 170psi(1,3,5) 165psi (2,4,6,7,8)
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2019 ss/1LE d1x, LT4 fuel System, Triple meth nozzle, ported BTR, 2” Texas speed headers, Built 377 SPDC motor, CTporting heads, TooHighPsi port system, SMG aux.
1014/800 on E55/meth
890/750 on 93/meth
Working on tuning the port system for full e.

With questions just message me here for a faster response. https://www.facebook.com/eric.willia...ibextid=LQQJ4d
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Old 11-12-2020, 09:56 PM   #22
95 imp
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Intake valve are floating with the boost?
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Old 11-12-2020, 11:07 PM   #23
s3rics213
 
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Originally Posted by 95 imp View Post
Intake valve are floating with the boost?
Not sure how to figure that out lol.

I’m thinking I either have a boost leak, which could be also what you said.
Springs are going out, lifters are failing, or push rods are loose. Kinda all the same out come lol other the. A leak someplace else. It’s that’s my issue that’s a easy fix cause I plan on pulling the motor in a few weeks to do the build just don’t want to do a build snd issue is there when it’s finished lol.
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2019 ss/1LE d1x, LT4 fuel System, Triple meth nozzle, ported BTR, 2” Texas speed headers, Built 377 SPDC motor, CTporting heads, TooHighPsi port system, SMG aux.
1014/800 on E55/meth
890/750 on 93/meth
Working on tuning the port system for full e.

With questions just message me here for a faster response. https://www.facebook.com/eric.willia...ibextid=LQQJ4d
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