Join Date: Oct 2007
Location: East Central Wisconsin
When you turn the key to the run position, can you hear the fuel pump kick in? You should hear a slight buzzing noise as it pumps up the pressure. Also, pull off one of your spark plug cables and insert a screw driver into the boot where the plug goes. Then hold the screwdriver (by the plastic handle!) a short distance from the block (maybe 1/8"). Have someone crank the Jeep and check if the spark arcs from the screw driver to the block. Alternatively, you could use a spark tester, or pull a plug, plug it back into the boot and hold the metal frame of the plug against the block of the engine. You should see a spark across the terminal when cranked. If you have neither spark nor fuel, I'd check the auto shut down relay in the power distribution box under the hood. If the relay goes bad, it will cut off spark and the fuel pump. You can swap one of the other relays in its place as many are the same.
If you are wiling to take the risk of using ether, you could shoot a couple short bursts into the air intake horn while someone cranks it. If it starts, runs a few seconds and dies, then you aren't getting fuel. Just be aware that ether can cause serious engine damage if not used correctly. NEVER shoot it into a hot engine or spray it into an intake before cranking the engine. If you do, the first piston down gets the entire shot of ether rather than it being spread across them all.
2000 WJ Grand Cherokee Limited, 4.7l V8, Quadra-drive
Farming is easy when your plow is a pencil and you are a thousand miles from the cornfield. -Dwight D. Eisenhower
Don't curse the farmer with your mouth full.
Ah, cows. A thousand roast beef sandwiches wrapped in a gorgeous leather coat.