I'm idling at the 2nd hash mark off of 0 RPM. I spent some time on my jeep this weekend and I'm thinking at this point in time that my engine has excessive vibration and that it is a bigger issue and is in no way a reflection on the brown dog mounts. I think I may have jumped to conclusions. Here is what I'm dealing with now.
1) Excessive vibration at idle with intermittent miss. Tried the following to fix:
a) New plugs
b) new distributer cap & rotor
c) new wires
d) tested for intake manifold leaks and found no change in idle speed or quality
2) Tested for burned valve at tail pipe. It will every once in a while "suck" a kleenex or piece of paper in (once in maybe 20 - 30 seconds and it sounds like a miss), but generally has positive pressure with no popping or funny noises. Used this method:
http://www.youtube.com/watch?v=tKDMqhqQ-WM
a) no popping or backfiring
b) Possible burned valve still???
c) possible sticking valve/or lifter, but there is no valve train chatter or noise whatsoever.
d) possibly need the yella terra 1.7 additional spacers because maybe the rocker arms
are too tight causing an exhaust valve not to seat properly.
e) No wild fluctuations in vacuum, holds a 6.66 at idle, but when it misses will drop to
6.57/6.48 then back to 6.66.
3) Noticed the #5 header primary was glowing orange last night after a drive.
a) possible lean condition (fuel injector)
b) possible rich condition (fuel injector)
c) possible valve stick/burned cause ignition extending into the primary.
e) AFR is always between 14.6 - 14.9 at idle, bounces a little around there, but I assum this is normal. It always enriched down to 11.5 at WOT while under boost, but I'm now a little afraid that uneven fuel distribution from possibly bad injectors may have caused a lean cylinder or two and maybe burned a valve.
4) Before noticing the header primary glowing I had noticed that number 3 & 5 cylinders are hot vs. the others. I can hold the fuel injector for each cylinder except # 3 & #5, so I'm now wondering if I've got some bad injectors.
a) The supercharger shipping box was filled with little foam pieces (including the tiny little snow flake sized balls that flake off) I'm concerned that some of these pieces made it into the new fuel line and may have clogged some of my injectors. I was meticulous about getting these off of all the other supercharger pieces, but I failed to blow the fuel line out before installing it. I will likely replace my injectors to see.
I'm thinking a compression check and leak down test are in order to determine if I have a burned valve. I'll probably install the yella terra spacers first just to rule them out then perform a leak down test.
Please share any other ideas. As you can see above I've got a lot to sort out. I'm not sure if whatever this condition is was present before the supercharger and I just exagerated it with the supercharger or if it is new since the supercharger. The spot glowing last night was in almos the exact same spot as the crack that was in my old exhaust manifold.
OGS, Cobra, what are your vacuum's at idle? Do I have a leak? If so, I can't find it... I've checked and re-checked dozens of times. I know N/A should be 15-20 in./hg, but I don't know what it should be after the supercharger at idle.
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