04 tahoe misfire

[chad195]

Just bought a 04 tahoe 5.3 with a hundred and thirty thousand miles on it it has a misfire I replaced the original plugs and plug wires and tested the coils and coil seem fine but it smells like it's running rich and can't tell why it's missing. Seems to clear up at higher rpms and will only through a p0300 code.

 

[Firewolf01]

Just bought a 04 tahoe 5.3 with a hundred and thirty thousand miles on it it has a misfire I replaced the original plugs and plug wires and tested the coils and coil seem fine but it smells like it's running rich and can't tell why it's missing. Seems to clear up at higher rpms and will only through a p0300 code.

I have the same issue, changed plugs, coils check out fine. My buddy hooked it up to a genesis, and both cats are reading lean. Next step, check the fuel injectors. Thats as much as I know right now.....


Sent from my iPhone using Tapatalk

 

[chad195]

I'm getting lean codes now bank one and two.

Sent from my SAMSUNG-SM-N920A using Tapatalk

 

[Firewolf01]

I'm getting lean codes now bank one and two.

Sent from my SAMSUNG-SM-N920A using Tapatalk

Again, same as me


Sent from my iPhone using Tapatalk

 

[chad195]

I tested the fuel pressure and pressure regulator and they were good but when I went to release the pressure the gas had a green tint to it.

Sent from my SAMSUNG-SM-N920A using Tapatalk

 

[Firewolf01]

I tested the fuel pressure and pressure regulator and they were good but when I went to release the pressure the gas had a green tint to it.

Sent from my SAMSUNG-SM-N920A using Tapatalk

Interesting....[emoji848][emoji848]


Sent from my iPhone using Tapatalk

 

[scorpio]

curious if anyone figured out this code and fixed the problem