video: p0305 misfire. using water or propane to find vacuum leak
i have a 2000 300m, 405,000km (~250,000 miles), was getting a misfire code on cylinder #5, hence the p0305 code.
i swapped out the coil pack and spark plug w/another cylinder but p0305 misfire code on cylinder #5 didnt change.
so either fuel, compression or vacuum leak could be the culprit.
using water then propane i confirmed i had an upper intake plenum gasket failure.
Last edited by vincom; 06-26-2018 at 06:19 PM.