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Message: <blockquote data-quote="bigdogYJ" data-source="post: 28903" data-attributes="member: 11207">Thanks for all the help.  I know which fuel pump I would need, but apparently It's not the fuel pump.  Put a gauge on the rail test port tonight and got 50psi at key on, stayed 45-48psi while cranking still sputtering and not starting. [MEDIA=youtube]tsJfeP-4C7c[/MEDIA]Tested a few other times and cranked but no fire. Was thinking compression test but sure sounds like its got compression.  Connected scan tool to check for crank signal -- crank signal ok still no fire.  Decided to hit the throttle a little and it coughed a bit more, then pushed throttle past half way and it sputtered and rev'd up to 3500rpm.  Kept it revving there for 20 seconds or so and slowly lowered it back to idle.  blipped the throttle a few more times and it returned to idle just fine.  Put in gear, moved forward, backwards, back to park idles just fine, smooth like normal.  Shut it down, restarted just fine and runs normal.   Tried it 4-5 more times without any hiccup.  <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite12" alt="o_O" title="Er... what?    o_O" loading="lazy" data-shortname="o_O" />[MEDIA=youtube]u0RZMXk7DKc[/MEDIA]So did we get a bad tank of fuel that drove fine for the last nearly 300 miles over a few days and caused issues in the last 1/4 tank after getting off the highway for 150 mile drive.   Seems odd.  Maybe watered down gas?  IDK I feel like im grasping at straws here. I'll try and see if it starts and runs fine over the next few days before I trust driving it too far.</blockquote>