HELP PLEASE!! Engine Vibration after rebuild LQ4
08-13-2010, 09:37 AM
#11
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will check them again... they all plugged, but maybe we did not plug right on to same place, we run OBDII test, everything fine
that why I was sure that everything should be plugged right.. anyway will check again if we mess the places, but think that everything is correct..
what you think on balance the crankshaft.. ?
and how you think maybe we chose the wrong position from timing chain, it has different positions our one for a moment is R2 (Manley timing set LS 3-bolt with captive Torrington thrust bearing and 9 keyway sprocket)
it has A2, A4, A6, A8 , 0 , R2, R4, R6, R8
can this course vibration ?
that why I was sure that everything should be plugged right.. anyway will check again if we mess the places, but think that everything is correct.. what you think on balance the crankshaft.. ?
and how you think maybe we chose the wrong position from timing chain, it has different positions our one for a moment is R2 (Manley timing set LS 3-bolt with captive Torrington thrust bearing and 9 keyway sprocket)
it has A2, A4, A6, A8 , 0 , R2, R4, R6, R8
can this course vibration ?
08-13-2010, 09:46 AM
#12
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actually i did not do it before because factory gauge which showing oil pressure, showing maximum, but will do the compression test today..
our compression should be 9:1
very bad to build and dress up engine and now I think I will go all the way back
08-13-2010, 11:03 PM
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08-13-2010, 11:07 PM
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08-14-2010, 01:07 AM
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and how you think maybe we chose the wrong position from timing chain, it has different positions our one for a moment is R2 (Manley timing set LS 3-bolt with captive Torrington thrust bearing and 9 keyway sprocket)
it has A2, A4, A6, A8 , 0 , R2, R4, R6, R8
can this course vibration ?
it has A2, A4, A6, A8 , 0 , R2, R4, R6, R8
can this course vibration ?
The thing that really struck me is they ground the crankshaft and no mention of balancing it. The crank is the hardest thing to test though, so start with easier stuff like the coils...
If the water thing doesnt work, you can unplug them one by one (but reinstall before you move on to the next one) and listen for a change in the engine sound. If the one you pull doesnt change the engine RPM or stability, then you know you have a bad one. Also check the spark plugs. If one or more of them is fouled, that cylinder is very rich and could be because of no spark.
08-14-2010, 02:22 AM
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After ALL test done we found out that we do not have compression on right Head, driver side compression is good, but other side compression is zero..
So what that mean, is that mean I need to change Engine Cylinder Head Block because it seems to have damaged?
visually they all been ok.. before installation I even installs new valve ans spring plus rockers
So what that mean, is that mean I need to change Engine Cylinder Head Block because it seems to have damaged?
visually they all been ok.. before installation I even installs new valve ans spring plus rockers
