Mobliser? I assume you are wanting to say that you opened your hood and washed the engine? If this is correct then you probably got water into electical connections and shorted something out. This would be especially valid if you used a car wash or power washer with water under high pressure. If that's the case then you could have damaged just about anything under the hood. Generally speaking, high pressure water under the hood is usually a bad idea.
you flooded it
probably cam positionong sensor.
What is it doing? ddus it turn over but just wont start?
hard or wont start after and during rain
Does it turn over? Does it have fuel, spark and compression?
Yes, this is possible.
somebody broke or didn't connect the crank sensor
ok i have a 1986 jeep cherokee it wont start from the key in side it turns over but dosent fire up an its got (gas an fire) it will start if you pull start it an it has a carb
The engine needs good battery power, fuel and spark to start and run. You are missing one of those.
Go get a new one... Its ganna cost more to fix then just to get a new one.
on the 4.0 jeep, if it cranks, but wont start, try replacing the crank sensor, located at the top rear of the engine, at the transmission
Ignition problem probably, Check wires, coil & cap to start