Misfire

[dpfarr]

I had a minute to read about flashing CEL this morning and seems like it corresponds with how my car was running this morning. I haven’t had any time since getting to work besides now sitting w a cup of coffee. If anyone can contribute thoughts to this while I’m working, I would be VERY appreciative.

2020 edelbrock w delicious flex fuel.

I got off the road asap and turned off my car. Popped hood and you know checked oil, fine. Noticed a wet injector seal. There was a tiny bit of oil around my filter catch. I assumed I cleaned that out last time I changed my oil. I don’t know if there is any correlation to this.

Started it back up to check if there was any visible fuel escaping that DPI, and nothing. No CEL upon restart. CEL came back (not flashing) with a persistent SLIP indicator.

I have ECUTEK, so my move when I get a chance is to check fuel pressure? Going to order a new set of seals today. What other systems should I look at?

Thanks guys!

[tomm.brz]

start with reading the cel code and maybe do a log with ecutek

[dpfarr]

Originally Posted by tomm.brz

start with reading the cel code and maybe do a log with ecutek

PO302 Cyl 2 misfire

P219A O2 sensors a/f ratio imbalance

If I’m correct, cylinder 2 is driver’s side front? Same DI that showed leaking on the fuel rail injector interface seal.

I’m going to start there and replace all my DI seals. I have deatchswerks injectors and wonder if there’s preferable material for seals opposed to OE?

[tomm.brz]

your deatschwerks are PI injectors
for seals for DI buy oem always

[smackrel]

Did you end up getting this resolved?

[dpfarr]

Originally Posted by tomm.brz

your deatschwerks are PI injectors
for seals for DI buy oem always

Thanks. Same advice for port upper seals?

Originally Posted by smackrel

Did you end up getting this resolved?

I haven’t wanted to go out after work this week because of rain. Garage is full of patio furniture.

[dpfarr]

Originally Posted by tomm.brz

start with reading the cel code and maybe do a log with ecutek

I seriously appreciate your interaction with this. The fuel rail to PI were destroyed in the way of falling apart on the ecu side. Which was not side that was leaking. The fuel pump side was the side that had the leak but those grommets came off whole. Go figure.


Here is a log in my driveway. The mark is me revving to 2k. Not sure why it shows a different value.

https://datazap.me/u/dpfarr/post-misfire?log=0&data=13

[dpfarr]

Originally Posted by smackrel

Did you end up getting this resolved?

I must have had some leakage for a while. (However minor).

Car runs good. Starts better. Cold e85 starts have always been kinda longer.

Now to find better grommets that are ethanol resistant.

[tomm.brz]

i m baffled because there are some vital values that are not logged properly like manifold pressure and afr actual, and i can t really say if the sensors are really not working or it s just some old racerom patch that is not logged properly
which could be the case with the crippled delicious tunes, specially with latest 2019-2020 tunes
Delicious uses sketchy speed density tunes with forced open loop fueling to force cars with similar mods to run almost the same , but as we say in Italy... if you stretch longer than the sheet, you'll uncover your feet
Honestly I can t really help with this situation, assuring you don t have any leaks
Do you have previous logs?
maybe we can try put a new temporary tune if you are willing to try

[dpfarr]

Originally Posted by tomm.brz

i m baffled because there are some vital values that are not logged properly like manifold pressure and afr actual, and i can t really say if the sensors are really not working or it s just some old racerom patch that is not logged properly
which could be the case with the crippled delicious tunes, specially with latest 2019-2020 tunes
Delicious uses sketchy speed density tunes with forced open loop fueling to force cars with similar mods to run almost the same , but as we say in Italy... if you stretch longer than the sheet, you'll uncover your feet
Honestly I can t really help with this situation, assuring you don t have any leaks
Do you have previous logs?
maybe we can try put a new temporary tune if you are willing to try

Thanks. Local tuner did mine on dyno. Not a delicious tune.

I think there might be an older log on my profile. It’s also possible I only selected certain parameters that excluded those?

These were from when my OE clutch was beginning to slip as I recall.


https://datazap.me/u/dpfarr/6th-wot?log=0&data=12

https://datazap.me/u/dpfarr/log-1699...?log=0&data=12

[tomm.brz]

Originally Posted by dpfarr

Thanks. Local tuner did mine on dyno. Not a delicious tune.

I think there might be an older log on my profile. It’s also possible I only selected certain parameters that excluded those?

These were from when my OE clutch was beginning to slip as I recall.


https://datazap.me/u/dpfarr/6th-wot?log=0&data=12

https://datazap.me/u/dpfarr/log-1699...?log=0&data=12

ok then it s 99% a bug in ecutek logging with your calibration and racerom patch, it happens
The tuner must have tuned it using a wideband lambda sensor in your exhaust because fueling seems ok besides vital values showing 0
If you do not have mechanical issues then would be difficult to diagnose anything online, you d need your local tuner to have a look