Start basic with a tune up with OEM parts to eliminate any misfires. You may have a fuel pressure regulator that is blown causing raw fuel to be dumped into the engien. If you attach afuel pressure gauge to theschrader valve on the fuel feed pipe, you should have 55-61 psi at idle, then it should jump up when you rev the engine. If it is high and doesnt move when revved, the reg is probably blown. If all is good, a fresh cat converter may help, but your numbers are very high so I would start with the other stuff first. The EGR looks like it is the only thing working (NOX)
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Saturday, September 13th, 2008 AT 7:50 AM