lets play guess whats wrong!

I have a 704560 (front half 7045, rear half 7060 ps).  Neither had run in maybe 3 years, so I spliced them together.  7045 ran great when parked, and 60 had strong trans.  When I put them together, it didn't run as well.  I used it to pull an irrigation rig to the field and back, then to another farm.  It had a bad miss, and a lot of white smoke, I assumed from the missing cylinder.  I drained the fuel and replaced with fresh with a injector cleaner.  Still ran poor.  I assumed a bad injector or two, so I replaced those.  Still just as bad.

Pluged up air filter from mouse nest?

neither one, keep trying.

C'mon guys the answer must lie behind clue #3! lol can't take the suspense!

mixed up parts from the other tractors and put them on this one?? actually maybe not but thats all I could get from clue #3, after I posted this I remembered they all had the 426.

Edited by ACscott - 06 Dec 2011 at 6:35pm

When I started it after the new injectors, I had to crack the lines.  That's when I heard the louder than normal valves.  One must have had extra clearance I figured.  Today I took off the valve cover, put the engine at TDC and wiggled the rockers.  I didn't have my manual there, or a feeler guage, but thought I would be able to feel one that made that much noise.  I sure did.  One lifter had excessive play, mostly due to A MISSING PUSH ROD!  I remember bending one on a tractor once (I think the puller), this must be where the replacement came from!  I actually think I borrowed it from the 7030, as that tractor is never used.  When to 7045 went down, I maybe took it from this tractor to replace the 7030's.  Not sure exactly how it went missing, but it sure is gone.  I bet it will have a little more power now.