Yes
For exhaust you need a friend, with a glove
Start engine and open the hood
Have friend put their gloved hand over tail pipe and listen for a noise on bank 2 exhaust
The fan in the engine bay can be quite noisy, so...............
When engine is stone cold, loosen and remove fan belt from crank pulley
Start engine, you can only run the engine for 2 minutes this way, no water pump
So be quick about it
Do same test and listen
Vacuum leak
Get some soapy water in a spray bottle if engine is warm, or ether(quick start) if engine is cold
Remove air tube from intake
Put a glove on your hand
Start engine
Put your gloved had over intake opening to restrict air flow, so engine is barely running
Spray "the fluid" at bank 2 lower intake areas
You will hear a change in RPM if either fluid is sucked in
You have higher STFT on both banks, and you have EVAP codes, EVAP use engine vacuum to operate, and it pulls that vacuum from upper intake somewhere, you will need to find out where
EVAP may be why your fuel trims are a bit high if its pulling vacuum from bank 2 side.......................well there you go
May not be as well, lol
You mentioned it so just throwing that out there
For exhaust you need a friend, with a glove
Start engine and open the hood
Have friend put their gloved hand over tail pipe and listen for a noise on bank 2 exhaust
The fan in the engine bay can be quite noisy, so...............
When engine is stone cold, loosen and remove fan belt from crank pulley
Start engine, you can only run the engine for 2 minutes this way, no water pump
So be quick about it
Do same test and listen
Vacuum leak
Get some soapy water in a spray bottle if engine is warm, or ether(quick start) if engine is cold
Remove air tube from intake
Put a glove on your hand
Start engine
Put your gloved had over intake opening to restrict air flow, so engine is barely running
Spray "the fluid" at bank 2 lower intake areas
You will hear a change in RPM if either fluid is sucked in
You have higher STFT on both banks, and you have EVAP codes, EVAP use engine vacuum to operate, and it pulls that vacuum from upper intake somewhere, you will need to find out where
EVAP may be why your fuel trims are a bit high if its pulling vacuum from bank 2 side.......................well there you go
May not be as well, lol
You mentioned it so just throwing that out there
