Tight valves question? Ahhh!

[dville_gt]

So I tried taking the ls-stang out and ran into a little problem. It runs like shit. I think when I pulled the heads I must have effed something up. The side I pulled header is getting much hotter then the other side, it is baking the paint and there is some slight smoke that seems to be coming from that sides exhaust dump. The motor is real rough, slow to respond to throttle off idle, and very poor accelerating. The side I didn't touch doesn't appear to be getting nearly as hot (I don't have a laser thermo, but my spit test indicates it is running much cooler). Any ideas?

Oh, and what are the odds I didn't screw up the valves if this is the case? I only took it down the road and back, not even a 1/4 mile, but it probably has 20 min of run time.

[Captain Crawfish]

maybe it has a bad vac leak causing it to run lean on one bank.

[greenbullitt]

spray the primaries with a spray bottle...looking for dead holes as the water will sit on those primaries

[dville_gt]

Def no dead hole, just the drivers side is MUCH hotter than passenger ( and not so strangely the side GM put together is the side that seems to be running cool).

[Captain Crawfish]

Def no dead hole, just the drivers side is MUCH hotter than passenger ( and not so strangely the side GM put together is the side that seems to be running cool).

headgasket on backwards restricting water flow to head maybe? I doubt it but sounds like its not getting water and getting hot on that side

[dville_gt]

Pulled the plugs, all were brand new with about 20 min run time. Drivers side are completely black (carbon not oil) passenger side look okay I guess. Any ideas now?

Driver side

Passenger side

Driver side

Passenger side

All of them

[dville_gt]

Oh, and no SES light either, don't have a scanner though.

[dville_gt]

Well, I am embarrassed to say, but I figured out what the issue is. Somehow I got the u2 sensors mixed up, I had the drivers plugged into the passengers and vice versa. To make it even worse the way I had to modify the o2 harness to work with the vette style o2 made it where it will go on backwards and lock in. So I actually had the o2s swapped and the one that was controlling the driver side was plugged in backwards. I took it on a little spin but quickly found out there was air in the brakes and they started applying themselves, so I quickly got home and bled them all.

I think there might be something wrong with the trans though, I am going to make another post about that though.

How do the plugs look now? I am almost thinking it looks lean now?


Driver

Passenger

[turbostang]

Damn, you were busy with the posts!

I HIGHLY doubt it's lean. First, you have to go WOT to determine if it's "lean". Second, the important part of the plug to look at is not the tip (not for WOT at least), it's the bottom of the porcelain, down inside(not shown in pics). The top is the "cruise area", and it changes frequently. Any idling will cloud up the plugs, and any cruising is likely to whiten them to some degree. With the fuel system you have, if anything, it should be running rich as hell.

[dville_gt]

Damn, you were busy with the posts!

I HIGHLY doubt it's lean. First, you have to go WOT to determine if it's "lean". Second, the important part of the plug to look at is not the tip (not for WOT at least), it's the bottom of the porcelain, down inside(not shown in pics). The top is the "cruise area", and it changes frequently. Any idling will cloud up the plugs, and any cruising is likely to whiten them to some degree. With the fuel system you have, if anything, it should be running rich as hell.

This was the first weekend I didn't spend half my time at the hospital and half at home keeping the place from going to shambles! Finally got to drive the damn car (and start getting the bugs worked out).