Question: if you put on one of the previous coils does the problem temporarily get "fixed"?
Secondly, are you sure that the "miss" is ignition related? Is it a regular, periodic, miss such as from a plug or wire, or is it more random, sporadic like a vacuum leak or fuel related? Is the timing mark erratic when using a timing light?
If you are convinced that it is ignition related, the quickest way to find that is to find a place with an ignition scope. You will see an ignition problem right away.
On one hand you say replacing the coil works ok for a short time but the measured ignition parameters look fine. Try the previous coils & see if the problem is the same or changes for a short time. IMO, if all the other ignition parts are in good shape, I'm thinking your problem is elsewhere.
In any case, don't get tunnel vision and prematurely rule out other possibilities. Keep an open mind.
Regards, Georg
__________________
"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum
|