Today I changed the fule filters but then the car won't start.

First I changed the inline filter, started the car, it ran fine.

Then I changed the main filter. It came with two O rings (one small and one large but I cannot find places for them and the old filter came out without them either). I filled the new filter with 8 oz of diesel kleen (this might be the mistake here). Started the car, it ran for about 5 seconds, then died. Now it wonlt start. Engine cranks but no start. It sounds like there is no fuel going into the engine.

I dumped the stuff in the new filter and tied again. Same thing, no start.

What could be the problem here?

The car is a 1987 300TDT so it should self prime. Is there a thing as flooding in a diesel engine?

Thanks.