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Something banging in engine, sounds like valve against valve cover

  #16  
Old 10-03-2011, 12:18 PM
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The way the truck started concerns me more then anything...
 
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Old 10-03-2011, 12:24 PM
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Originally Posted by DemonRace6
Holy crap that blow by is caussed by warn piston rings or a cracked piston? ...
If you are referring to the video posted by A/Ox4....then that blow by is normal. No worries with that engine.

Originally Posted by CSIPSD
The way the truck started concerns me more then anything...
I couldn't see the video, was taking forever to load. Was it taking multiple attempts to start?
 
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Old 10-03-2011, 12:30 PM
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Yes, and had that dead or over compressed sound to one or two holes...
 
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Old 10-03-2011, 12:34 PM
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Sounded horrible in my opinion. Like either a split nozzle almost hydrolocking or a dead hole. The fact that the OP said it went away after a couple of miles, makes me think something relieved the pressure maybe a hole or rings gone, definitely see how much pressure is at the oil fill cap first.
 
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Old 10-03-2011, 12:34 PM
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Originally Posted by CSIPSD
The way the truck started concerns me more then anything...
i agree x2
 
  #21  
Old 10-03-2011, 01:06 PM
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Originally Posted by DemonRace6
Holy crap that blow by is caussed by warn piston rings or a cracked piston? That would mean I would have to pull the engine and do a full top end rebuild??

dont panic yet. valve covers are not that hard to take off...then you can see more of whats going on. like the guys said....may be something realtively simple like glowplug, push rod, etc.
 
  #22  
Old 10-03-2011, 01:58 PM
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OK so when I get home tonight:

1) Start truck the way it is right now and check blow by
2) Post results of blow by
3) Start pulling valve covers off

Sound good?
 
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Old 10-03-2011, 02:01 PM
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i would remove the d/s valve cover first, to see any visible signs of things outta place, then check blowby..eitther way, the vlave/s need to be removed.
 
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Old 10-03-2011, 02:02 PM
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Originally Posted by CSIPSD
Yes, and had that dead or over compressed sound to one or two holes...
Originally Posted by BigAlsPSD
Sounded horrible in my opinion. Like either a split nozzle almost hydrolocking or a dead hole. The fact that the OP said it went away after a couple of miles, makes me think something relieved the pressure maybe a hole or rings gone, definitely see how much pressure is at the oil fill cap first.
Because I run WVO my truck always takes longer to start.

What are the holes?

After I pull the valve covers is there a way to get a view of the pistons and cylinder walls with out to much more work? See what the WVO has done to my engine if it has done anything?
 
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Old 10-03-2011, 02:04 PM
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Longer to start but never has had that one hard spot where it almost sounds like its not going to turn over.
 
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Old 10-03-2011, 02:05 PM
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Originally Posted by timmyboy76
i would remove the d/s valve cover first, to see any visible signs of things outta place, then check blowby..eitther way, the vlave/s need to be removed.
OK, pull the covers, check for something clearly messed up, fix it, then check for blow by.
 
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Old 10-03-2011, 02:09 PM
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Originally Posted by Philip Berardi
no worries bro, like jim said it could just be a blown out glow plug. im about 40 min from Philadelphia..if you want send me a PM and ill give you my cell. I can walk you through anything you have questions with in regards to getting the VC off.
Thank you PM sent
 
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Old 10-03-2011, 02:30 PM
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you fire up motor with valve cover/s off...
 
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Old 10-03-2011, 02:44 PM
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Originally Posted by DemonRace6
OK, pull the covers, check for something clearly messed up, fix it, then check for blow by.
I just watched the video...
Jim might be on the right track. There was a video on here a while back of a salvage yard engine that sounded like that and it had blown out the glow plug. I'll try and find that thread...

I'd pull the valve covers and look for anything out of place. Look and see if any of the glow plug wires have been blown off. If everything looks normal, then you might try starting the engine with the VCs off and check for blow by and see if you have a lot of smoke out the exhaust.
 
  #30  
Old 10-03-2011, 02:57 PM
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Originally Posted by DemonRace6
OK, pull the covers, check for something clearly messed up, fix it, then check for blow by.

Checking the blow-by via the cap-on-filler-tube method takes 15 seconds, so I'd do that first. Post up if good or bad so the forum can bench wrench it while you take off the VCs.

Good luck!
 

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