Enclave p0304 white smoke comming out of left tailpipe

[jagsmg05]

I have a 2010 Buick Enclave with a new engine with 40,000 miles on it. I have a check engine light with an error code of P0304 and a strong smell of fuel with white smoke coming out of the left tail pipe. I believe I have a failed fuel injector. Any other information helps.

 

[MelsRegal]

white smoke is engine coolant, did you remove the spark plug and does it look like it has been washed clean?

 

[HotZ28]

Did the engine ever overheat? If so. you may have a blown head gasket. As mentioned, WHITE smoke out of the tail pipe is an indication of coolant ingestion into the combustion chambers.

 

[jagsmg05]

I did remove #4 spark plug and replaced it and thd coil pack. The plug was warn and haf a strong fuel smell compared to plug#6. Why would the white smoke only come out of the left tail pipe and not the right?

- - - Updated - - -

Engine does not overheat it idles rough,smokes and in a couple of minutes it turns off. Strong fuel smell in and outside of car.

 

[MelsRegal]

you may have multiple issues, a gasoline leak and a problem with the #4 cylinder. If you remove the oil fill cap do you see a creamy brownish substance which would indicate engine coolant mixing with the oil? Have you done a compression test? Have you done a coolant hydrocarbon test?

 

[HotZ28]

In addition, have you, or anyone else done a leak down test on #4 cylinder??

 

[jagsmg05]

FIXED! FUEL INJECTOR #4 WAS THE ISSUE. I HAD A TOUGH TIME REMOVING THE FUEL RAILS AND I REUSED THE FUEL SESNOR AND JUMPER LINES. SO FAR SO GOOD! I FOLLOWED THE INSTRUCTIONS BELOW ON THE ENCLAVER FORUM, VERY EASY AND WELL WRITTEN.

http://www.buickforums.com/20-engine-drivetrain/13242-changing-fuel-injectors-myself-2.html

 

[jagsmg05]

Issue Fixed!

 

[HotZ28]

Issue Fixed!

You mind expanding on the the "Fixed", so it could help others with the same problem?

 

[jagsmg05]

I replaced fuel injector #4 and ran vehicle 5 to 10 miles burning off excess fuel. No more white smoke or strong smell of fuel. It was tough taking off fuel lines and I reused jumper lines and fuel senor that alot of threads were saying to replace. All injectors had to be removed, I cleaned the others with carb cleaner.

 

[Son Of Ed]

I did remove #4 spark plug and replaced it and thd coil pack. The plug was warn and haf a strong fuel smell compared to plug#6. Why would the white smoke only come out of the left tail pipe and not the right?

- - - Updated - - -

Engine does not overheat it idles rough,smokes and in a couple of minutes it turns off. Strong fuel smell in and outside of car.

I have this exact same problem now... just got this 2011 enclave and it was running great until about 2 hours ago and it idled rough as I pulled up home. Then I smelled this extremely strong has scent and noticed white smoke coming out of the mufflers.