I replaced the fuel filter on my 05 Jetta TDI as I have done many times, but did not suck fuel through the new filter completely. I started it and it ran rough, then died. It cranked and cranked but did not start afterwards. I removed the fuel return hose from the engine side, and clamped the return hose to the filter, and used a Mighty Vac to suck fuel through the engine fuel lines. There was fuel in the line, but still no start. Any ideas? Thanks.