Great...someone with the same type issues as i am now experiencing...not sure how old thread is...but looking also for help.
I have changed fuel filter with new factory unit, looked like fuel was passing through it just fine as it spilled all over me removing it..lol.I have also checked fuel pressure and it holds at 46-50psi. The easiest way to do this was to simply take rubber ose off steel line just down below fuel rail as the 2000 has no adapter to tee into. That is unless you take end plug out of rail....? I will TEE into same location and check flow today to see if that shows anything. I have also changed plugs, and air filter at first as a tune up need. The vehicle is also not throwing any codes which is making me question fuel pump even if it sounds perfectly fine and holding pressure...? A buddy suggested I smell for a fuel odor at the valve above the charchol canister....couldn't smell anything obvious. Tank is full. The orginal issue was hard to start, turned over fast but wouldn't catch as it should. It finally died at a traffic light which is why it's now off road so to speak. When it is running which it does, it runs great and accellerates well when punched. It does have a very slight hesitation but we are talking about a Tracker after all, not a F1 machine...lol.
Is there any other things to check before spending huge $$$ for a new pump..? Starting to pull what little hair out i have left...lol