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Jim, et al: First, my apologies for not being able to delete unnecessary text from previous emails. This system is set up to include the entire text in the reply. I am using an inductive pick up that goes to my inductive tach/dwell meter. I just replaced the spark plugs and rechecked the gap. The gap is .60 mm. There is, however, some carbon soot on the plug. Could this be fouling the plug, causing misfire resulting in more carbon buildup? Thanks, John ------------- Original Text From: type3@vwtype3.org, on 1998.10.20 18:26: To: <type3@vwtype3.org> On 19 Oct 98, at 6:59, John M. Kowalski wrote: > Thought that I had this one licked, but the problem recurred yesterday. > The problem? Even though there is consistent spark from the dist. cap to > the #2 plug wire, the tach meter, when attached to the #2 plug wire > indicates an inconsistent firing. The engine idle falters when the tach > meter indicates a misfire. This only happens on #2. Any ideas? What do you mean by "attached to the ... plug wire"? Is this an actual connection, or an inductive pickup? If if is inductive, then it depends on the actual flow of current through the wire. If the spark plug doesn't actually fire, then there will be no current. This does not mean that there is no high voltage; it just means that the voltage is not high enough to arc across the spark plug gap. It also means that the spark is not going to ground by any other path out past the inductive pickup, because the pickup wouldn't care how the current manages to flow. This rules out a fouled plug and a tracked SP insulator. So, check for #2 SP gap too large, or SP electrodes worn round so they won't fire. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe