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if you have a "barn find"and it has the original leads the spark will probably jump off the leads,other than that look at the top of the coil for flash over or the dist cap for cracks,sometimes the rotor also cracks under the brass strip which you cannot see and the spark jumps to the dist shaft,take lead off coil and position it 1/4 inch from the engine and crank,if you see spark jump the gap,thenreconnect it and do the same with the spark plug leads from the dist to see if the spark comes back out of the dist,if no spark from coil it may be internally shorted
New leads is good silly question the spark plugs were also replaced? Assuming this is the case next port of calls are the ignition coils then the injectors. Anecdotally if it very intermittent and is as car warns up probably coils if it is ever present look towards injectors. Once again check simple things first like battery condition, fuel filter, air filter.
U have a power wire that has been breached ur gonna have to check continuity to ur power wire at the coil and dist hook one lead to the fuse that supplies power and other lead to to same circuit under hood at coil repeat step with all wires on coil and dist just to be sure.
i weould have to agree that one of two problems a bad crank sensor that heat related our a bad ing modugle which is controled by the crank sensor. now heres the kicker there both in the dist. pull the cap off if any oil runs out of the dist replace it, the odds are you need to replace the dist any way. good luck kdc744
Ignition coil or distributor cap. Not knowing the Avenger I couldn't tell you where to find either but follow the HT leads from your plugs and you should find them. If you aren't getting a spark on any plug then the perp is your ignition coil and it'll need replacing, if you're getting a spark on some then it's the dist cap, check the contacts and give them a clean and see what happens. F.Y.I. the dist cap is the first thing back up the line from your plugs with all the HT leads going in, and the ignition coil is after the dist cap.