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Old 01-28-2013, 02:23 PM   #15
erik13
 
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Picked it up today.
"carbon deposits on intake and exhaust valves. remove carbon from valves using procedure as outlined in bulletin #PIP5029B. road tested vehicle. no misfires present at this time."


My question is how does a car with 23k get carbon deposits??
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Old 01-28-2013, 04:24 PM   #16
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If it was on the exhaust valves your running rich.
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Old 01-28-2013, 04:55 PM   #17
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You should search about the use of catch cans. My v6 would burn oil do to crankcase pressure or blow by
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Old 01-28-2013, 05:27 PM   #18
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You should search about the use of catch cans. My v6 would burn oil do to crankcase pressure or blow by
I have read quite a bit about catch cans. Mostly for on this forum but differing opinions elsewhere.
My question is why should I have to mod my car to make up for a GM design flaw (if there even is one)?
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Old 01-28-2013, 05:33 PM   #19
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I agree with you, but what I caught with my can, I didn't want that going back in to be burned up in my intake. I did it also on my v8 which doesn't seem to have as bad an issue. Tracy has some interesting pics on this, which you have probably seen.
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Old 01-29-2013, 03:39 PM   #20
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Have you found out what the problem is. This past Sunday the 26th my service engine light came on and was running rough. Pulled it back in shed and parked it until I could get it into dealer today. They reset the light and it came back with errors p0300, p0301, p0303 and p0306, misfire. Cyl #3 had highest count at 140, #1 had 20, and #6 had 16 counts. So, they cleared codes and rechecked. Could not recreate the misfire. So, coming home I watched my temp gauges, analog and digital. The analog was running at about 150 degrees, outside temp 63 and it has never showed this low temp. Digital gauge was running from 196-225 degrees, really sporatic. When it reached 223 I called the service dept and informed them of this and asked if I should come back. The analog gauge has always shown between 196-210 regardless of outside temp and today its reading 150? Digital always reads 196 regardless of outside temps.
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Old 01-29-2013, 08:18 PM   #21
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Quote:
Originally Posted by erik13 View Post
Picked it up today.
"carbon deposits on intake and exhaust valves. remove carbon from valves using procedure as outlined in bulletin #PIP5029B. road tested vehicle. no misfires present at this time."


My question is how does a car with 23k get carbon deposits??
It seems you and I had the exact same issue.
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Old 01-30-2013, 03:01 PM   #22
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Guess what- check engine light came back on today!
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Old 01-30-2013, 03:09 PM   #23
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Originally Posted by Lethal_8 View Post
It seems you and I had the exact same issue.
What was the outcome for your problem?
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Old 01-30-2013, 06:28 PM   #24
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Guess what- check engine light came back on today!
Tell them to re-flash it per SB PI 0284.
Add dry gas (it helps) in winter.
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Old 01-31-2013, 04:41 PM   #25
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will do. thank you!
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Old 01-31-2013, 05:16 PM   #26
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These LLT engines hate the bitter cold, terrible cold starting performance.
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Old 02-02-2013, 05:03 PM   #27
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Dropped it off again today and they gave me another rental. Let's see what they say this time.
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Old 02-04-2013, 01:00 PM   #28
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We bought a NEW 2012 V6 Camaro in October. We currently have 8,000 miles on it. On 1/14/13 the check eng lt came on so we took it to the dealership, they said #5 coil mis-fire and replaced. 1/16/13 - 2 days later, check eng lt back on another mis-fire but wanted to do more testing. 1/21/13 took the car back to the dealership they ran more tests and said it was the ECM (ECU) so they replaced that. Got the car back on Friday 1/25/13 on 1/30 check eng lt back on again!!! Got car back in to dealership, they said CARBON BUILD UP on 1 & 3 & 5 injectors and need replaced. The dealership suggested we run PREMIUM gas... we ALWAYS ALWAYS ALWAYS run premium gas. A brand new car with this many problems!!!! WTH
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