Small amounts of condensation are not uncommon. Often times, the PCV (positive crankcase ventilation) system may be plugged causing it.
As far as the misfire, the check engine light should be on indicating which cylinder is the problem. You need to remove that plug to see if there is a problem. NOTE: Often times I have seen the rubber boot that plugs onto the plug go bad and allow power to arc causing a misfire.
I'm not sure what kind of plug you want to use in the engine, but I don't recommend anything different that what it came with.
Start by checking codes so we know which cylinder is misfiring. Once you do that, remove that plug and inspect it. Also, check to make sure there are no markings on the rubber boot that would indicate arcing. If everything looks good, check to make sure that plug is getting spark. If it is, then do a compression test on that cylinder to determine if there could be a possible head gasket issue. Please keep in mind, getting coolant into the combustion chamber will result in a lot of white smoke from the exhaust. If that is an issue already, then we know it is a gasket. If there isn't white smoke, chances are it is an electrical issue.
Let me know what you find.
Friday, May 29th, 2015 AT 8:07 PM