# Something not right with combustion? **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [January 8, 2006, 11:27am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356 "2006-01-08T11:27:04Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 8, 2006, 11:27am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/1 "2006-01-08T11:27:04Z")
Any idea why the #5 chamber & #3 piston look different than the others? ---
**Author:** ![eurodad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eurodad/32/5988_2.png) [@eurodad](https://forums.speedlife.net/u/eurodad)\ **Post date:** [January 8, 2006, 12:17pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/2 "2006-01-08T12:17:01Z")
cause you don’t run it hard enough! did you ever do a compression test on it after you had finished it? ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [January 8, 2006, 12:28pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/3 "2006-01-08T12:28:40Z")
> [@eurodad](#): > > cause you don’t run it hard enough! > > ? ---
**Author:** ![InsaneSTi](https://avatars.discourse-cdn.com/v4/letter/i/4bbf92/32.png) [@InsaneSTi](https://forums.speedlife.net/u/InsaneSTi)\ **Post date:** [January 8, 2006, 12:29pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/4 "2006-01-08T12:29:57Z")
> [@eurodad](#): > > did you ever do a compression test on it after you had finished it? ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 8, 2006, 3:17pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/5 "2006-01-08T15:17:21Z")
No, I didn’t do a compression test. It did start to use oil though. ---
**Author:** ![Bravada\_442](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bravada_442/32/5982_2.png) [@Bravada\_442](https://forums.speedlife.net/u/Bravada_442)\ **Post date:** [January 8, 2006, 3:23pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/6 "2006-01-08T15:23:56Z")
This is the engine out of your firebird right? I’ve seen overcarbed engines do that before, where the primarys are dumping fuel into certain cylinders depending on how its setup, but that wouldn’t make any sense if its fuel injected. ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [January 8, 2006, 5:06pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/7 "2006-01-08T17:06:01Z")
hows the cly walls & rings? ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 8, 2006, 5:59pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/8 "2006-01-08T17:59:29Z")
> [@67 RS/SS](#): > > hows the cly walls & rings? From what I can see of the walls they seem okay, but I can’t rotate the assembly to check them. Don’t know about the rings. Have to get it torn apart. If there’s a problem with the rings it kind of doesn’t matter since i’m getting a new short block, but I’d still like to know. In case it’s something else. ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [January 8, 2006, 6:10pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/9 "2006-01-08T18:10:42Z")
have the heads checked! ---
**Author:** ![flyinglow57](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/flyinglow57/32/5978_2.png) [@flyinglow57](https://forums.speedlife.net/u/flyinglow57)\ **Post date:** [January 8, 2006, 6:11pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/10 "2006-01-08T18:11:56Z")
have them reserfaced or decked .020 that will help out also. 🙂 ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 9, 2006, 4:12am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/11 "2006-01-09T04:12:55Z")
They were just decked 0.010 last year. Don’t want to take too much off! What would be possible causes? Too much fuel? Oil getting in? :dunno: ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [January 9, 2006, 4:34am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/12 "2006-01-09T04:34:22Z")
what bearing spun? ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 10, 2006, 5:10am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/13 "2006-01-10T05:10:43Z")
Took the pan off yesterday and there were a few pieces in there. Didn’t have time to get the rest apart. ---
**Author:** ![T70\_Tsi](https://avatars.discourse-cdn.com/v4/letter/t/898d66/32.png) [@T70\_Tsi](https://forums.speedlife.net/u/T70_Tsi)\ **Post date:** [January 10, 2006, 5:49am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/14 "2006-01-10T05:49:02Z")
i’ve seen that when headgaskets dont’ seal correctly…oddly enough on my buddy’s 2g motor the bearing that spun that piston also looked like what you’re showin me ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 10, 2006, 7:52am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/15 "2006-01-10T07:52:27Z")
> [@BlueMeanieTSi](#): > > i’ve seen that when headgaskets dont’ seal correctly…oddly enough on my buddy’s 2g motor the bearing that spun that piston also looked like what you’re showin me They look like they sealed but I wouldn’t write that off as the problem. I (and several other people) had probelms with the coating on the Mr. Gasket head gaskets sticking to the packaging. I drove to Summit to try and get two good ones. ---
**Author:** ![MONTE\_SS](https://avatars.discourse-cdn.com/v4/letter/m/8797f3/32.png) [@MONTE\_SS](https://forums.speedlife.net/u/MONTE_SS)\ **Post date:** [January 10, 2006, 8:39am UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/16 "2006-01-10T08:39:34Z")
Did you identify where that metalic material is coming from, looks “tinny” in the pic, not like a ring bearing, piston chuck, etc… ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 10, 2006, 6:36pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/17 "2006-01-10T18:36:51Z")
Whatever it is, there’s a shredded piece of it stuck between the number 3 rod & the crank: [Piece of Metal](http://home.comcast.net/~saccani/DSC02101.JPG) And is this what the windage tray looks like. Is it just a single piece of formed metal? No bottom piece to it or anything? [Windage Tray](http://home.comcast.net/~saccani/DSC02102.JPG) ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [January 10, 2006, 6:41pm UTC](https://forums.speedlife.net/t/something-not-right-with-combustion/179356/18 "2006-01-10T18:41:16Z")
thats the bearing comung out