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2011 Chevy Impala LT 3.5 Misfiring p0306 I checked cylinder…

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2011 Chevy Impala LT 3.5 Misfiring...
2011 Chevy Impala LT 3.5
Misfiring p0306
I checked cylinder 6 but firing looks good
Changed all Plugs, plugs wires, injectors, remove and and get valves reseal, change ignition coil and Car still misfiring.
Submitted: 4 months ago.Category: Chevy
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Answered in 2 minutes by:
12/2/2017
Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago
rpmdiag
rpmdiag, Tech and Instructor
Category: Chevy
Satisfied Customers: 8,657
Experience: Since 1975
Verified

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

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Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Be sure that the injector is firing to. Check for pulse with a noid light.

All we need is good compression, spark and fuel to fix a misfire.

Please understand that I don't know your skill level or tools
you have to assist us. Also understand that I can't see, smell,
hear, or touch the vehicle either, so your patience is
appreciated. JA is a great Q/A site, but it does not replace a
repair shop. So please don’t shoot the messenger if I have to
deliver bad news:)
If you are satisfied with my answer, I would greatly
appreciate a 5 star rating now before you leave the site and I
will still assist you after you have rated me too if another
question pops up. I don’t get credit for helping you until
you rate me

Thanks, Ron

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Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Did you have any more questions for me at this time?

Thanks again, Ron

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Customer reply replied 4 months ago
Where can I get a noid light?
Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Most parts stores have them. Also, check for a leaking injector "O" ring that seals it from a vacuum leak too.

MODE 6 on a scan tool would tell us even more about this misfire.

Thanks again and please remember to rate me 5 stars now
and keep this link in case you need me again later on.
I don’t get credit for assisting you until you rate me

Ron

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Customer reply replied 4 months ago
I use the Noid light and the light is blinking
Customer reply replied 4 months ago
I changed the injector also and no leaking
Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Okay, then unfortunately you're missing something. Once again, it can only be compression, spark or fuel, there isn't anything left on an internal combustion engine.

Thanks again and please remember to rate me 5 stars now
and keep this link in case you need me again later on.
I don’t get credit for assisting you until you rate me

Ron

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Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Another thing to look at is if the computer is firing the coil.

Thanks, Ron

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Customer reply replied 4 months ago
Sorry my number is(###) ###-####
Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Can only call you through the site after you authorize payment.

You can just rate me here now and we can continue here. Otherwise?

Thanks again, Ron

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Customer reply replied 4 months ago
I already request for the call
Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

Never saw it.

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Customer reply replied 4 months ago
Got a Engine for $150 so I swapped it and all is well now. Did all what you told me but didn’t resolve my issue.
Chevy Mechanic: rpmdiag, Tech and Instructor replied 4 months ago

More testing was in order then.

Thanks again and please remember to rate me now and keep this link.

Ron

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