99 jeep Tj 4.0L Kind of wierd what is taking place. My jeep has always been a good started. I turn the key once til i heard the fuel pump kick in and then it would fire right up. Yesterday after upgrading the battery cables with a set of jeepcables big 7. I went to start it up the same as above. Everything turned on like it should and it cranked over but wouldn't fire. I checked every connection (i did use dielectric grease) Everything seemed fine. Tried it again and it fired up. (after it set for a bit) Test drive went great and every start up after that.. This morning I went out and turned the key on, heard the fuel pump and did it one more time. Wouldn't fire again. Tried it a few times. Under the hood I could smell fuel,like it was flooded. Let in sit about 10 minutes and it fired right up. Never had any issues before. Any ideas? I'm baffled