Engine/Transmission (1994 - 1998) Strange Days

[Johnstra]

For some reason my truck seems to be running stronger lately, and I really can't explain it. I haven't done anything to the engine since having the pump tuned. Boost, EGTs, fuel pressure, oil pressure... everything is right where it's always been, but the engine definitely definitely has more go at all RPM. Any ideas? The only thing that comes to mind and it's a stretch is that I switched to Schaeffer Supreme 9000 sythetic oil 4k miles ago and it has a healthy dose of moly in it. Moly is supposed to help a little with compression by filling in microscopic voids in the cyclinder walls, but I'd never expect it to be enough to actually feel - especially since my engine doesn't use oil or create much blowby.

-john

 

[Woodenhead]

I notice once in a while it feels like my truck starts running stronger. Could be different fuel or sometimes weather changes (colder temps) seem to help.



Mike

 

[Johnstra]

I still don't know what it is, but it's definitely fueling like it never has before. Every now and then I give a good run up the hill just to blow out the gunk. Today when I got on it in 4th it smoked black like it never has. Boost same as always, just a lot more fuel.

-john

 

[JKouzez]

i notice every once in a while mine feels stronger at random times who knows i always thought maybe it was low on fuel so it was lighter but a full tank only weighs like 250 pounds

 

[ProMac1K]

Probably temp or barometric pressure change. Of course, could be just the way you are running it too. :-laf