I bought a 95 wrangler that was said to have been sitting for 8mths+ and it's fuel injected but would still turn over so I at first had no concerns. Well we got it home put a new battery in it and drained the tank and put new gas in it. Went through all the fuses and it still wouldn't crank. We have since changed the coil, cam shaft sensor, crank shaft sensor, the thing inside the distributor (forgot what its called), it at first would turn over a flood out then we changed all those, now it will crank we had it going down the road it started acting funny and it cut off, we got it to crank back quite a few times and go about 10 feet then cut off, with us trying to get it home this way we burnt up the starter, have since then changed that and towed it home. We changed it and it started right up and we just cut it off the other day we went to crank it and it wont start again you can smell gas like its flooding out but doesn't do that all the time.. I'm at a stand still with this thing. The only other thing I knw to change under the hood is the ecu and engine harness. Does anyone have any suggestions about this at all?
I would find that gas leak/small and go from there. It's fuel related sounds like.
If the smell is coming from the rear/underneith the jeep etc, I would start by diagnosing the fuel pump, make sure it's working properly, and check the fuel filter - yeah 8 months sitting I would definitely replace that fuel filter (even if that's not it). The filter is rear driver side up behind the tire well, you cannot miss it. The pump is right on top of the fuel tank. Unplug the line at the fuel filter leading towards the engine and see if a good constant flow of gas is coming out, etc. Dump the fuel in a oil catch/pan or something and inspect it. That filter might have all kinds of crap in it and be clogged maybe.
The fuel pump is working fine and we changed the filter. I had talked to another guy who said his jeep did it and it was his ecu going bad and it did it for four months because it was sending the wrong thing out. I ordered a new ecu off ebay and hoping it would be here today or tomo. We had someone check the fuel pump and they said it was in great working order, the filter def needed changing so we got a new one. Once it gets running it runs out great but sometimes it has spark and sometimes it doesn't.
Yeah man let it sit and run. Give it some slight gas after awhile. But I would let it run for awhile in neutral/idle for sure. Let it try to clean all that crap thats been sittting for 8+ years off the injectors perhaps. Do you have any fuel injector cleaner? Maybe some Lucas Oil or something?
Check for faults using the Check engine light. Does the check enigne light come on when your first cycle the key to start it? When you check the fuel pump, how did you check it? The way it should be checked is with a pressure guage on the fuel rail and jumper the fuel pump relay. The pumps sometimes fail after they start to warm up.