I would put on new fuel filters and use some fuel conditioner.
The wait to start light on a 92 Dodge Diesel truck can be caused by a lack of fuel to the engine. It can also be caused by a wiring problem.
Probably the fuel pump. Or the injectors.
2007 was the first year but you could also get 5.9 diesel also
It is possibly the injection pump. Happened to me. Contaminated fuel can cause it. The pump was replaced along with lift pump. Runs great now--Dodge has the best diesel engine. First, check the fuel pump relay--that happened to me, too. Under the hood, driver's side, plastic snap-off cover.
If a 2003 Dodge Diesel has a bad fuel pump, the vehicle will probably not start. If it does start, it will not run very long before it starts to spit and sputter and may even stall.
Maybe check your fuel pump pressure.
check the glow plugs and the glowplug curcut . also check the fuel filter
If it is a 12 valve 1994-1998 the fuel shut off selinoid is a common problem about $170 from Piers Diesel or $400 from the dealer.
Your 1993 Dodge Caravan might start sometimes and not start other times because of a bad starter or solenoid. You might also have a weak battery or a charging system that is not working correctly. This could also be an issue with the distributor.
i know with diesel engines if you run out of diesel, or change any part of your fuel line you will need to bleed your injectors to get it to run. you may have to bleed them all before it will run.
Have someone try to start it and while they are in the start position lightly hit side of the starter with a hammer. This worked for me. But you still need to replace the starter.
You start by removing the fuel pump, installation is the reverse of removal.