11-28-2018, 09:26 AM | #1 |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
Location: By the lake in AZ
Posts: 15,719
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P0300
2 weeks ago our 2010 camaro LS3 started running bad all we got was a P0300 and when we started to work on it too find out what was not working, car seemed to be running on only 4 cylinders any one know whats going on?
Tested compression on all 8 and 7 had 160-165 PSI , 1 was 0, we had both fuel and spark to all 8 cylinders. |
11-28-2018, 10:16 AM | #2 |
Hotwheels
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Start with checking
For a Bad valve, Rocker broke.. Broken / stuck rings Blown head gasket.. Sent from my SM-G955U using Tapatalk
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11-28-2018, 10:26 AM | #3 |
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How many miles? Any engine mods ...how many miles go ?
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11-28-2018, 12:29 PM | #4 | |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
Location: By the lake in AZ
Posts: 15,719
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Quote:
57K no mods this started a week ago and car has not moved, so may be 1-2 mi ago. |
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11-28-2018, 01:38 PM | #5 |
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11-28-2018, 03:42 PM | #6 |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
Location: By the lake in AZ
Posts: 15,719
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11-28-2018, 04:17 PM | #7 |
Drives: 2011ss/rs camaro Join Date: Sep 2011
Location: florida
Posts: 1,261
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Dead cylinders all on same bank?...rat chewed thru harness wire? Wires make contact with exhaust and burn?
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. OBX LTH,Rotofab,Magnuson Heartbeat.AEM wideband, HP Tuners
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11-28-2018, 04:37 PM | #8 |
Donkey Dick Cam Camaro
Drives: 2010 2SS/RS LS3 M6 Join Date: Oct 2009
Location: Los Angeles, CA
Posts: 1,998
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someone had this issue last week and itr ended up being fuelinjection related....ill look for the post
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Bone Stock |
11-28-2018, 05:26 PM | #9 |
Drives: 2010 Camaro SS Join Date: Oct 2013
Location: Saskatoon SK Can. Eh
Posts: 365
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Are you saying one of the cylinders has zero
compression???
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2010 Camaro SS RS, Maggie with 3.4" pulley, 60# injectors, ADM dual fuel pumps, ADM Stage 2 Cam with Brian Tooley springs and pushrods, black CAI intake, Stainless Works long tube headers w/gutted cats, ZL1 Diff w/offset bushings, Pfadt lowering springs, Pfadt sway bars, Pfadt solid sub frame mounts, BMR trailing arms and toe rods, Hurst short throw shifter, Painted on Hugger Orange stripes, Forgestar F14 Piano Black wheels, Nitto NT05 rubber.
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11-28-2018, 09:19 PM | #10 |
Drives: 2010 Camaro SS/RS Join Date: Mar 2014
Location: somewhere in MD
Posts: 4,883
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Check the coil and injector grounds on that side. My shop removed a spark plug that was stuck in the head and had one bank not fire at all after putting it back together. Turned out a ground wire had gotten cut
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2010 2SS/RS
Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53 |
11-29-2018, 11:19 AM | #11 | ||
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
Location: By the lake in AZ
Posts: 15,719
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Yes thats what we are saying. Its both sides, that only the rear 2 per side do not fire. |
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11-29-2018, 12:01 PM | #12 |
Drives: 2010 Camaro 2SS/RS M6 Join Date: May 2009
Location: Idaho
Posts: 726
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Id start by figuring out why there is zero compression in the one cylinder. Sounds like there is a broken valve spring, so I would fix that, retest compression and then go from there. I'm curious how you know it is only running on 4 cylinders.
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GPI SS2; EE E2 catch can; SP 1 7/8" LT Headers w/ hfc; FM AT 3" cat-back; CAI Cold Air Intake; AEM Wideband
Tuned by GPI McCleod RXT; MGW flat stick; Ram Clutch slave cylinder & hydraulic adjuster BMR cradle & diff bushings, trailing arms, toe rods & upper control arm bushings Hotchkis sub-frame brace Stop Tech Z-23 brakes 4.10 gears, Eaton Truetrac, LPW diff cover Best 1/4 mile 12.073 @ 115.68 mph 3,300 ft DA |
11-30-2018, 01:27 PM | #13 | ||
Hotwheels
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Doesn't matter if it has spark or not..In half or all of them. First figure out why there isn't compression.. In 1 cylinder Have you tested for spark? All I remember was that you said it seamed like it was only running on 4 cylinders Sent from my SM-G955U using Tapatalk
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12-05-2018, 01:09 PM | #14 | |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
Location: By the lake in AZ
Posts: 15,719
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Last it did not trow a code for only one cylinder but the random P0300, any one know why? |
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