Jimny Won't Start PLEASE HELP

Hi I’ve owned my little Jimny which is a 1999 1.3 for over 3 years never had a problem with it apart from Rust. About 4 weeks ago I was driving it and it started dying every time I revved up it would die and I managed to limp it home when I looked under the bonnet the earth lead to the cam shaft sensor (CMP) was not attached and also the battery had died. So I fitted a new battery connected the sensor and it ran so I could take my dogs for a walk which is about 5 minutes away on the way home same thing again and then I broke down and had to get towed.
So now it sits on my drive and all it does is turn over but every now and again it spits back and stop the starter motor and does not fire I do have fuel going to the engine, So far I have bridged the plug to find no fault code it just flashed (12) which is no fault, I have tried leaving the battery off for over a couple of days to clear the codes but still does not fire.

So I now have changed the lambda sensor in the exhaust still did not run.
So then I changed the Cam Sensor (CMP) still does not run.

I am now out of ideas and really don’t want to give up and scrap my Jimny because they are such fun little cars any help or ideas much welcomed.
Many Thanks
Sheppard4x4

And you have ignition on spark plugs aswell as fuel? Check if spark plug on coils has a spark

I’ve checked this morning there is no spark at all and I have tried both keys to see if that could be the problem so now where should I have a look for the next fault so see why it is not sparking ?

so many things it could be in my case of no sparking i had ignition but the engine would turn and not fire i was trying somthing out which needed the battery to be disconnected and when i went to take of the earth lead i found that it was ok on the battery but loose where its bolted to the body , it had enuff connection to turn the engine but upset the ecu comands once i got it back tight it started no problem

Ive checked the battery earth cable and the earth to the engine and they are both dead tight and connected.

Check crankshaft sensor.