Generally speaking, if that is possible in these cases, what does cold
exhuast mean? My car is running terrible rough; no power. I thought my
convetor was plugged, but when I removed it, I found that the left pipe from
the manifold is hot ( 390 degrees with digital therometer) as expected. The
right pipe is cold ( 81 degrees). So cold that I can grab it while the
engine runs. In addition, when I put my hand against the opening, I get
vacuum. Any ideas? Thanks, I'm stuck here.