Put new glow plugs in ran fine for 1 day now it wont start..

This sounds exactly like a bad fuel pump. Do this turn the switch on then listen for the pump to run when it doesn't run have someone beat on the fuel tank with a piece of wood if the pump runs replace it. I hope this helps. Take Care.

I have similar problem different vehicle, my ignition was not connecting well and the glow plugs were not initially getting properly hot, not sure how to fix it/ I disconnected the battery entirely and unplugged what I could and switched # 1 for #3 plug and waited overnight and charged the battery out of the truck, next day put all back and attached battery and started right up right since , so try take out battery and charge better first.

Good god people!

Glow plugs means not gasoline being burned, you will truly ever find spark to be the problem; I will only credit one of the answer guys for even being awake and on point enough to have a clue, the answer involving the coolant temp is the right one, I however will suggest another angle on living with this symptom: spill about two tablespoons of gasoline onto a clean rag and hold that over the air intake, crank it it will start. This will not harm anything and will confirm you have a faulty glow plug timing issue, and for the love of sanity buy the shop manual and follow the troubleshooting flow chart, the best answer will be there.

From eddie b blunt, master mechanic 30 yrs and ticking

SEE IF THE GLOW PLUGS ARE WORKING

seems fuel related--pump and pressure regulator may be failing--a pressure test for residual fuel is needed. Go to an honest, independent or specialist. Injector driver could be going bad. It\'s in the computer. Get a obd 1 scan tool on it to read data as well as any codes

Combining the hot cat converter and the missfire code, I would lean toward a fuel problem. Too lean or pressure too low.
If it was an ignition problem the cat would usually not be hot.
If the exhaust was stopped up, you would not usually get the multiple missfire issue. Just lack of power.
It could be a leaking EGR or other vac problem, and a dirty fuel filter too.

It sounds like you have water in the tank.

Have you checked Google I found this hopefully it's not your timing or it may be flooded but doubtful have you tried spraying starting fluid into the intake while cranking it

did you reset the alarm/immobiliser system every time the power was disconnected???

check fuel pump or relay,run scanner for trouble codes, some auto parts stores will do this for free