90 wrangler 4.2 starts, after 5 sec. loses spark

[tailights24]

I usally just hang around and read other jeepers problems that match mine but I have one I hav'nt seen. I have a 32/36 weber that seems to be a bit finiky to say the least. After I start my jeep it will run for 5 to 10 seconds and then just die. Originally I was thinking it was flooding out for some reason so I went through making sure I had the correct fuel press. through my regulator and all was fine. Then for grins I checked the spark after it died, no spark. most of the time it takes several hours before it will start up again and the rest of the times it takes a day or so. ( this sure makes it hard to turn it back into my main ride again). If anyone has any ideas on this I would like to hear them. Thanks.

P.S. what a kick but forum by the way.

 

[yjdave]

My guess is coil or ignition control mod.

 

[spiritree]

Had much of the same problem once. Changed the coil and it solved the problem. Looses spark when it heats up. Good luck. Spiritree

 

[engine swap 89 to 93]

The engine on my 1989 Jeep Cherokee died and I replaced it with a 1993 jeep Cherokee engine, everything seems to be fine except for the distributor. The distributor connection on the 89 is different than the 93. I Mickey mouse the connection to fit the 89. The engine started up and stayed on for about 3 minutes 5 different times. The engine then died and did not turn on anymore.

I would like to know if the distributor from the 93 will work well with the 89, was it wrong for me to try and make it work in that manner? Can anybody give me any ideas? Or does anybody know if this will just not work?