Fueling issues LLT - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Bigalamo · 10-19-2022, 10:42 AM

Hey guys, I have a 2011 LS with the LLT and have been having fueling issues for a bit. A couple months ago, after a road trip, I went and got a car wash and at the end the Camaro started running extremely rough with a CEL, thick white smoke, ‘Reduced Engine Power’ and fuel was literally spilling out of the exhaust tips on both sides. Gave me these codes: P0306, P0303, P0087, P0089. I went ahead and swapped all 6 injectors and the fuel pressure sensor. Turned out one of the injectors from cylinder 1 wasn’t working, confirmed by swapping back’n’forth. So I closed it up with 5 new injectors and 1 old working one. Yesterday I did a really hard pull and the exhaust started popping like crazy on decel. CEL, white smoke, and reduced power came up again. This time it only showed codes: P0300, 0301, P0087, P0089. I dropped a new injector in and it runs much better, but it will keep dropping a CEL with just the P0301 code and doesn’t run AS smoothly as it should. It also has a heavy fuel smell. I swapped spark plugs between Cylinder 1 and 3, but it still is showing P0301. Not sure what to do now, so any suggestions?

xstuntman · 10-20-2022, 02:54 PM

So you swapped the two plugs.
after running is number 1 still wet with fuel?

Bigalamo · 10-20-2022, 03:29 PM

Quote:

Originally Posted by xstuntman

So you swapped the two plugs.
after running is number 1 still wet with fuel?

Number 1 plug wasn’t ever wet, but I looked down into the cylinder and could see the piston was saturated.

10-19-2022, 10:42 AM	#1
Bigalamo Drives: 2011 LS Camaro Join Date: Apr 2019 Location: FL Posts: 74	Fueling issues LLT Hey guys, I have a 2011 LS with the LLT and have been having fueling issues for a bit. A couple months ago, after a road trip, I went and got a car wash and at the end the Camaro started running extremely rough with a CEL, thick white smoke, ‘Reduced Engine Power’ and fuel was literally spilling out of the exhaust tips on both sides. Gave me these codes: P0306, P0303, P0087, P0089. I went ahead and swapped all 6 injectors and the fuel pressure sensor. Turned out one of the injectors from cylinder 1 wasn’t working, confirmed by swapping back’n’forth. So I closed it up with 5 new injectors and 1 old working one. Yesterday I did a really hard pull and the exhaust started popping like crazy on decel. CEL, white smoke, and reduced power came up again. This time it only showed codes: P0300, 0301, P0087, P0089. I dropped a new injector in and it runs much better, but it will keep dropping a CEL with just the P0301 code and doesn’t run AS smoothly as it should. It also has a heavy fuel smell. I swapped spark plugs between Cylinder 1 and 3, but it still is showing P0301. Not sure what to do now, so any suggestions? __________________

10-20-2022, 02:54 PM	#2
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,310	So you swapped the two plugs. after running is number 1 still wet with fuel? __________________ 2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.