7045 engine help

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I posted last week or so about low power on 7045.  Turned out it was a missing push rod.  Well after looking at it closer the next day, the push rod was snapped in half.  I had to remove the head as 1/2 was bent oddly and couldn't be pulled out.  New head gasket, reset the valves, still pops loudly on one cylinder and low power.  What could it be, bad valve comes to mind for me.  not sure what would have snapped the pushrod, maybe valve stuck a little and hit piston??  Can I drive it the 6 miles to my shop, been working outside at dairy farm, wouldn't mind a little heat :-)  Or should I try to borrow a trailer? 
  After it was put back together, there was fluid leaking from crack in exhaust manifold.  Looked black like oil, so thought maybe seal on turbo.  I replaced with another one, and no improvement.  I think it may have been fuel turned black from exhaust soot.

While runnning, it makes a distinctive pop and miss from one cylinder.  There is very little blow-by coming out (almost none).  Thanks in advance

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Brad(WI) Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 12 Sep 2009 Location: Oxford Points: 186	Post Options Post Reply Quote Brad(WI) Report Post Thanks(0) Quote Reply Topic: 7045 engine help Posted: 22 Dec 2011 at 6:17pm
	I posted last week or so about low power on 7045. Turned out it was a missing push rod. Well after looking at it closer the next day, the push rod was snapped in half. I had to remove the head as 1/2 was bent oddly and couldn't be pulled out. New head gasket, reset the valves, still pops loudly on one cylinder and low power. What could it be, bad valve comes to mind for me. not sure what would have snapped the pushrod, maybe valve stuck a little and hit piston?? Can I drive it the 6 miles to my shop, been working outside at dairy farm, wouldn't mind a little heat :-) Or should I try to borrow a trailer? After it was put back together, there was fluid leaking from crack in exhaust manifold. Looked black like oil, so thought maybe seal on turbo. I replaced with another one, and no improvement. I think it may have been fuel turned black from exhaust soot. While runnning, it makes a distinctive pop and miss from one cylinder. There is very little blow-by coming out (almost none). Thanks in advance

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injpumpEd Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 13 Sep 2009 Location: Walnut IL Points: 5096	Post Options Post Reply Quote injpumpEd Report Post Thanks(0) Quote Reply Posted: 22 Dec 2011 at 6:57pm
	swap injectors from 2 cylinders once you find suspect cylinder by cracking lines. could have got something in an injector while apart.
	210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Brad(WI) Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 12 Sep 2009 Location: Oxford Points: 186	Post Options Post Reply Quote Brad(WI) Report Post Thanks(0) Quote Reply Posted: 22 Dec 2011 at 7:44pm
	Guess that could be very likely. I didn't think of it cause I just replaced them all

Orange Blood Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 29 Nov 2010 Location: ColoradoSprings Points: 4053	Post Options Post Reply Quote Orange Blood Report Post Thanks(0) Quote Reply Posted: 22 Dec 2011 at 7:56pm
	black liquid coming from seams or holse in the exhaust is not a problem, all of ours do it until they get warmed up enough to burn out the condensation, or a little water that has gone down the exhaust. Now once it is up to operating temp, and you have put a little load on it, and it continues, or it smells like fuel, you may have another issue. Do you have any bluish white smoke after it warms up?
	Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7

TREVMAN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 04 Jan 2010 Location: Regina,Sask,Can Points: 1635	Post Options Post Reply Quote TREVMAN Report Post Thanks(0) Quote Reply Posted: 22 Dec 2011 at 8:59pm
	I dont know what your problem is, but I WOULD NOT drive it 6 miles. Been there, done that, cost me THOUSANDS, hope it works out o.k., Trev.

MACK Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Nov 2009 Points: 7664	Post Options Post Reply Quote MACK Report Post Thanks(0) Quote Reply Posted: 22 Dec 2011 at 9:50pm
	It bent a valve when pushrod came off. Happens when adjuster loosens up. Lifter gets on rim of pushrod several times until it bends pushrod and comes off. Did you grind valves or check them while head was off? MACK

Unit3 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Oct 2009 Location: NC Iowa Points: 5597	Post Options Post Reply Quote Unit3 Report Post Thanks(0) Quote Reply Posted: 23 Dec 2011 at 7:15am
	How much oil pressure does it have? I have heard that the line from the head to the rockerarm shaft can plug up. If it did, you could still have good oil psi, but no oil volume up there. Oil volume is what lubs the valves, rockers, adjusting screws, pushrods, and cam lobes. I have seen this first hand on a 4W305 with 65 psi, low oil volume out the rocker arm shaft. It is my belief that this lead many an 8550 and 4W305 to an early death. Good luck.

Brad(WI) Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 12 Sep 2009 Location: Oxford Points: 186	Post Options Post Reply Quote Brad(WI) Report Post Thanks(0) Quote Reply Posted: 23 Dec 2011 at 7:34am
	It has 40 psi. I ran it with valve cover off. Lots of oil flow passing through it. Not much or no oil leaking out through rocker arm assembly, not sure if that is right. Seems most oil is going straight through it. Plenty of oil coming out pipe at end, though.

Unit3 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Oct 2009 Location: NC Iowa Points: 5597	Post Options Post Reply Quote Unit3 Report Post Thanks(0) Quote Reply Posted: 23 Dec 2011 at 10:21am
	On our old 4W305, we had a small grove scratched from the oil holes on the rockerarm shaft. The holes were at 4 oclock and the groves came up to about 3 & 9. As soon as this was done, we had plenty of volume. We figured with 2 valves per rockerarm, it made so much up pressure on the shaft, the oil couldn't get out. Our adjusting screws would wair out and the pushrods would turn blue from the top down because of heat.

MACK Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Nov 2009 Points: 7664	Post Options Post Reply Quote MACK Report Post Thanks(0) Quote Reply Posted: 23 Dec 2011 at 9:14pm
	Pinch the return tube from rockers 3/4 closed will help oil the rockers. MACK