:( I have had a few posts about this problem I have had with my engine pulling back when I accelerate grually. Soon after I began to have a rough idle. After two yes two Lexus diagnostics they finally have "found the problem." They say they found coolant in #3&4 spark plug holes, spark plug wires have a carbon trac-what does that mean? The coolant was cleaned out and I just replaced the plugs and wires no more than 2k ago. In addition, Intake air hose, PCV Vent hose hardened-then need to test drive seems pretty general. Can you guys help me out? Is the Lexus Dealer trying to rip me a new one, ,if not where do I locate the PCV vent hose? and what the hell is carbon trac in spark plug wires?