Hi everyone---Just finished installing re-built injectors following normal procedure. I managed to start engine. It was a bit bumpy so I revved it a little. After two minutes or so it just shut down and won't start. I noticed some fuel dripping from under the engine and so checked that the filter was properly seated. I noticed excessive pressure while removing the fuel filter cover. Diesel sprayed all over engine. Why was there so much pressure in the fuel filter while the switch was turned off?