1994.5 - 1997 7.3L Power Stroke Diesel  

blow back through intake

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Old 06-04-2008, 11:12 PM
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blow back through intake

Alright. Finally though i had my truck all fixed up after pulling all 4 injectors on the passger side bank and re o-ringing them. put it all back together and she starts up and runs beautifly. this is untill i take her for a second test run and we start hearing a "missing" sound. get it back to the house and it only gets worse. the guy that has been helping me with all of this said it was a clynder bowling back threw the intake. it sounds like its coming from the drivers side bank.
he said it sounded like a rocker arm or a push rod was out of place. i plan on taking the passenger side vavle cover off tomorrow morning to see if i happen to screw anything up while i was putting it all back together.
any other suggestions?
Oh it will start and run with this "miss"
 
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Old 06-04-2008, 11:20 PM
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poping through the intake sounds liek valvetrain issues
 
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Old 06-04-2008, 11:38 PM
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meaning?
 
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Old 06-05-2008, 02:08 AM
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Was the motor clocked at 11 when you installed the rockers and push rods?
It should be clocked so the lifters can bleed down during the install.

Bill
 
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Old 06-05-2008, 07:16 AM
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If it just a miss try cleaning your FPR screen. apparently they get clogged pretty easy when you mess with injectors. Don't ask how I know. LOL
 
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Old 06-05-2008, 08:12 AM
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Originally Posted by MADVAN
Was the motor clocked at 11 when you installed the rockers and push rods?
It should be clocked so the lifters can bleed down during the install.

Bill
It was wasnt at clocked at 11, but i did clear all the oil/fuel/fulid out of it before i put the injectors in and then once the injectors were in i cleared them all again threw the glow plugs.
 
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Old 06-05-2008, 10:37 AM
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I would check all the pushrods where you reinstalled the rockers.
Its possible the valve hit the piston and bent a pushrod or valve.
Reinstall rockers with motor at 11. Just line up the balancer to the CPS.

Bill
 
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Old 06-05-2008, 11:10 AM
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It wasnt a bent push rod but instead i didnt tighten the rockers down......... so that is all fixed now and its up and running.

how long should it white smoke? and there seems that it doesnt have as much power now, just need to wait for it work its self out?
 
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Old 06-05-2008, 11:22 AM
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Originally Posted by custom_nirvana
It wasnt a bent push rod but instead i didnt tighten the rockers down......... so that is all fixed now and its up and running.


Originally Posted by custom_nirvana
how long should it white smoke? and there seems that it doesnt have as much power now, just need to wait for it work its self out?
Just drive it. It needs some miles to purge the air.

Bill
 
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Old 06-05-2008, 11:23 AM
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The white smoke should clear up with just a short drive, It'll take a good hard drive to purge all the air out of the high pressure oil system.
 
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Old 06-05-2008, 11:35 AM
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Alright, im going to take up to the guy that has been helping me through all this so he can clear all the codes out one last time.

think i should go ahead and take the outher side out and replace those o-rings too? my thinking is if the those went bad the others cant be far behind.
 
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Old 06-05-2008, 12:16 PM
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Originally Posted by custom_nirvana
Alright, im going to take up to the guy that has been helping me through all this so he can clear all the codes out one last time.

think i should go ahead and take the outher side out and replace those o-rings too? my thinking is if the those went bad the others cant be far behind.
Good thinking.
Congrats on the fix BTW.
 
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Old 06-05-2008, 03:34 PM
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Thanks Neal, been a long two weeks.
 
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Old 06-05-2008, 09:34 PM
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i'm a little confused, why did you remove the rockers to put injector o-rings in?
 
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Old 06-06-2008, 09:39 AM
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Cuz i had only watched the guy take one of the injectors out and thats how he did it. i did see that you dont have to take them out at all, that all you really have to to is take two bolts off(oil deflector and one retaining bolt). but if you dont have one of those spiffy injector puller tools its hard to "pry" them out and with one of the rockers out it makes life easier. also he brought a serice manual and it doesnt say anything about clocking the motor at 11.
 


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