Re: Slight skip in 37 six

Posted by fredkanter On 2016/7/5 6:14:18

The metal in plug wires lasts in definitely so checking the resistance will probably yield no information except if the wire is not connected to a terminal. What does deteriorate is the rubber covering which you cannot determine with an ohmmeter. The reason it skips on acceleration is because the compression pressures are the highest then and the spark has to most difficulty jumping the plug gap so it chooses the path of least resistance which often is jumping from a wire to the block or another grounded item. When at idle the cylinder pressures are the lowest thus the skip will most likely not occur

A plug with too wide a gap will cause such a skip. I feel that it is ignition for sure. Could be a crack in the cap or a path inside the cap, could be a wire that is not connected to the terminal, could be a defective to too wide gapped plug, could be a cracked plug insulator.

Let us know your progress. Good luck