Missfire Cylinder 5

[AngelF80]

Hi everyone,

My name is Angel from Dominican Republic.

I have ran into a situation and getting the codes you see attached on this thread.

140001- Misfire, several cylinders: injection is cut out
140010 - Combustion misfires, several cylinders: detected
140501 - Combustion misfire, cylinder 5: Fuel injection is switched off
140510 - Combustion misfire, cylinder 5: detected

I changed everything from spark plugs to coilpacks to all the injectors and the problem still persists, even the LPFP

Compression looks good.

Any advice or guidance of similar situation, I would appreciate it.

Car before corona virus and country was in lockdown, ran perfectly fine. Right now it will stutter around 2-3k rpm, I left off and than I can smash the pedal and car will be fine for a while, until turn off and repeat the process above.

It does this on ignite 114 gas/map and even on stock map with 93 oct.

Built engine
EOS intake manifold
GC+ turbos
Interchiller
1000cc injectors Fuel it Stage 4
Many more other parts.
Still nothing.

Thank you,

[AngelF80]

Bump

[Wanted_M]

Bienvenido hermano, que tune tienes y que gap en las bujias?
Limpia el MAF por si acaso ta sucio. Tambien chequea el voltaje de los primeros sensores de O2 para el STFT o LTFT?
La bujia esta seca o mojada en cylindro #5?

[AngelF80]

Originally Posted by Wanted_M

Bienvenido hermano, que tune tienes y que gap en las bujias?
Limpia el MAF por si acaso ta sucio. Tambien chequea el voltaje de los primeros sensores de O2 para el STFT o LTFT?
La bujia esta seca o mojada en cylindro #5?

Bujia sale perfectamente bien.

Mañana le verificare los 02 y el maf.

Mira por si acaso este es un datalog.

Carro hiso 586whp asi base map.

https://www.bootmod3.net/log?id=6081c510d10b433b1bc1d342

Gap es 0.018

Eh probado base map 114 mando Paul y tambien el stock map del carro con gasolina 93 oct.

Pasa lo mismo.

[Wanted_M]

Originally Posted by AngelF80

Bujia sale perfectamente bien.

Mañana le verificare los 02 y el maf.

Mira por si acaso este es un datalog.

Carro hiso 586whp asi base map.

https://www.bootmod3.net/log?id=6081...0b433b1bc1d342

Gap es 0.018

Eh probado base map 114 mando Paul y tambien el stock map del carro con gasolina 93 oct.

Pasa lo mismo.

Ok, I see a few things that caught my attention on your log and maybe others can chime in but you're running out of fuel.
1. The LPFP psi drops like a rock as you climb on RPM, no bueno.
2. The HPFP is dropping low and not meeting target.
3. STFT are off (disparities) on bank 1 vs bank 2 as well as lambda target not met. You're leaning out.

Did you send this log to Paul?

[TopJimmy]

Yaaa you're running out of LPFP fueling. Then because of that the HPFPs can't reach target.

Your mods list has PI and GC+ but no upgraded LPFP with piggy-back pump and Hobbs Switch. Time to add the LPFP and Hobbs.

After this straightens out the HPFP, LPFP and STFT, hopefully your Lambdas come together too.

Plug gap might be a little tight on Cyl4 but that's minor...it cleans up at high RPM.

[AngelF80]

Originally Posted by TopJimmy

Yaaa you're running out of LPFP fueling. Then because of that the HPFPs can't reach target.

Your mods list has PI and GC+ but no upgraded LPFP with piggy-back pump and Hobbs Switch. Time to add the LPFP and Hobbs.

After this straightens out the HPFP, LPFP and STFT, hopefully your Lambdas come together too.

Plug gap might be a little tight on Cyl4 but that's minor...it cleans up at high RPM.

Will be working on it, this week and give an update on the situation.

I got fuel it stage 4.

That's a 2nd pump, hobb switch also, but guess something was connected wrong or something.

[f0rgivM3]

Originally Posted by AngelF80

Hi everyone,

My name is Angel from Dominican Republic.

I have ran into a situation and getting the codes you see attached on this thread.

140001- Misfire, several cylinders: injection is cut out
140010 - Combustion misfires, several cylinders: detected
140501 - Combustion misfire, cylinder 5: Fuel injection is switched off
140510 - Combustion misfire, cylinder 5: detected

I changed everything from spark plugs to coilpacks to all the injectors and the problem still persists, even the LPFP

Compression looks good.

Any advice or guidance of similar situation, I would appreciate it.

Car before corona virus and country was in lockdown, ran perfectly fine. Right now it will stutter around 2-3k rpm, I left off and than I can smash the pedal and car will be fine for a while, until turn off and repeat the process above.

It does this on ignite 114 gas/map and even on stock map with 93 oct.

Built engine
EOS intake manifold
GC+ turbos
Interchiller
1000cc injectors Fuel it Stage 4
Many more other parts.
Still nothing.

Thank you,

Did you fix this ? Having the same issue

[slaughter.mode]

What are you tuning with?

[Schemxr]

Originally Posted by f0rgivM3

Did you fix this ? Having the same issue

Ive had a similar issue. Turns out the rolling anti lag messed up my injectors. I changed the injectors, new 2 step colder spark plugs as well as ignition coils. Try to make sure all the ground wires for the injectors are still securely tight. Add LPFP Act to you logs and see if the rail pressure is dropping below 50 at idle.