05-25-2014, 05:27 PM | #15 |
COTW 5/06/2013
Drives: 2017 Corvette Grand Sport-Ho-Vette Join Date: May 2012
Location: Milford, Michigan
Posts: 3,201
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you need spark plugs...... get these and then check
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2017 Grand Sport, Borla X Pipe.....Enough Said
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05-25-2014, 05:43 PM | #16 |
Drives: '10 2LT/RS, '13 Malibu Join Date: Nov 2009
Location: Wichita KS
Posts: 476
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Any ideas on a good performance plug and part number? Or would you recommend stock replacement?
I've heard this cars plug change is pain? True? I've done plenty of changes in the past. Just curious if I should do the DIY...
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05-25-2014, 05:48 PM | #17 |
COTW 5/06/2013
Drives: 2017 Corvette Grand Sport-Ho-Vette Join Date: May 2012
Location: Milford, Michigan
Posts: 3,201
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easy on the 6, get the OE plugs....
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2017 Grand Sport, Borla X Pipe.....Enough Said
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05-25-2014, 08:51 PM | #18 |
having FUN now 13.66@101
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easy and for sure go with stock plugs.
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05-26-2014, 06:00 PM | #19 |
Drives: '10 2LT/RS, '13 Malibu Join Date: Nov 2009
Location: Wichita KS
Posts: 476
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Spark plugs changed. Still avg 27 on the highway @ 70mph.
Here's a pic that I want to see what you guys think of this. This was the middle plug port dri vers side, but there were a few like this.
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05-26-2014, 06:07 PM | #20 |
COTW 5/06/2013
Drives: 2017 Corvette Grand Sport-Ho-Vette Join Date: May 2012
Location: Milford, Michigan
Posts: 3,201
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not bad, but seals from cover to plug tubes could be replaced. wont cause your loss of mpg
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2017 Grand Sport, Borla X Pipe.....Enough Said
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05-26-2014, 06:52 PM | #21 |
Drives: 2017 1SS 6spd Join Date: Jan 2011
Location: Utah
Posts: 2,869
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Anyone else ever pulled those plugs? Or are you using any oil to speak of?
Some old school guys will use a little motor oil on the threads if the anti-seize isn't handy,,, |
05-26-2014, 07:35 PM | #22 |
Drives: '10 2LT/RS, '13 Malibu Join Date: Nov 2009
Location: Wichita KS
Posts: 476
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Wasn't associating with the mpg loss. Just curious about it, since I've seen it before. I'm not really familiar with the LLT design motor, but have plenty of hands on automotive work before. Call me old school I guess. After all I did say plugs and wires earlier.
This is the first the plugs have been replaced, but there has been some service work on it for a head leak. The mechanic at that dealership had even left 3 bolts loose and one fell out! Did a fuse pull anyways and the power seems to have come back a little too, so says my butt dyno! I'm sure the motor will do a relearn and go back to what was with the 87oct. I will see where the next few days takes me. Thanks again for the ideas and tips!
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05-26-2014, 07:54 PM | #23 |
Drives: 2010 Camaro 2LT Victory Red Join Date: Feb 2011
Location: Boston MA
Posts: 358
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oil
I had the same oil in my spark plug holes.
i would dump the rx can. do you have the rx oil breather also? or drilled dirty side barb? iam also guessing to that if you take your air intake off you prob have oil in the throttle body and air intake. |
05-27-2014, 02:00 AM | #24 |
:chevy:
Drives: 2LT/RS Join Date: Jun 2008
Location: Toronto
Posts: 13,033
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This is exactly what happened to my v6 and I've pretty much given up
Sat in a buddies SS who drives more aggressive and his MPG was a bit better then mine I did the sea foam Did not do the plugs because I was advised that it was a waste and I see it didn't help your mpg either Driving my car like a prius and still getting 14mpg and we have summer blend gas now. Really don't know what to do. The o2 sensor replacement looks promising
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05-27-2014, 03:18 AM | #25 | |
Drives: Blue Join Date: May 2012
Location: WA
Posts: 1,338
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Quote:
Checked tonight...currently rocking 19.1 litres/ 100km....just roughly south of 13MPG...this is a blend of 90% city and 10% highway. I do not drive that aggressively...so I am really not sure how it is always this low. |
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05-27-2014, 03:31 AM | #26 | |
Trentin24
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Quote:
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05-27-2014, 09:34 AM | #27 | |
Drives: 2010 Camaro 1LS 3.6 LLT V6 325 HP Join Date: May 2009
Location: LS
Posts: 4,242
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Quote:
I have done a high of 34 hwy and a low of 28 hwy depending on the hills or flat road. I also run fuel injector cleaner every 3 months or so.
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2010 Camaro Auto, Inferno Orange, Titanium Interior, Gearhead Wheels AIRAID CAI
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05-27-2014, 10:23 AM | #28 |
COTW 5/06/2013
Drives: 2017 Corvette Grand Sport-Ho-Vette Join Date: May 2012
Location: Milford, Michigan
Posts: 3,201
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IMHO injector cleaner does nothing for the Di motor
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