Terrible clacking frim 300tdi - Page 2 - Defender Source
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  #21  
Old January 31st, 2015, 09:25 PM
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Quote:
Originally Posted by Red90 View Post
There is nothing to see with the pan off.
You could see excessive play in the rod bearings, although like you said before, it likely wouldn't be running.
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  #22  
Old January 31st, 2015, 09:29 PM
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Quote:
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I wouldn't let anyone at AutoZone diagnose a crack in an egg! F-ing MO-RONS! I once had an oil spray tube fall off (you know the ones that cool the piston skirt from underneath). I doubt it would make a clacking noise if that had happened but is it possible that something else fell off in the lower end? Could your timing have slipped causing some mistimed injection?
Yes, maybe this? I talked to the shop yesterday that tuned my truck about backing the timing off a degree or two. They're in Salt Lake and planned on having it done next week. It has been idling way too fast after they had it and my EGT temps were inhibiting a decent cruise speed. Wayne up in Portland said he's seen injectors fail and act like this. Again, sounded like metal on metal. But did have a puff off smoke come from the filler cap when I pulled it at first.
First thing in the morning we're draining the oil through a strainer. Might take a video of it running before we drain it?
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  #23  
Old February 1st, 2015, 12:06 AM
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i wouldn't run the engine again until you figured out the cause of the noise. it could just damage truck even more.
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  #24  
Old February 1st, 2015, 04:13 AM
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Wishing there was a quick and easy UOA just in case it spots something odd.
Pleased that the clearances etc appear correct.
Before you remove the head, check the timing marks line up correctly. If you do pull the head, I'd be tempted to have a replacement TB kit inc tensioner handy.
What actual EGT temps were you seeing?
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  #25  
Old February 1st, 2015, 11:53 AM
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Well, we've done all we know to do. Don't want I get this thing too torn down only an hour and a half from my folks place.
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  #26  
Old February 1st, 2015, 12:51 PM
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Very reminiscent of Josh and I's race to get to Bellingham a few years ago, when my 300Tdi decided to blow every belt and gasket on the engine along the way. While my issues were cooling/head gasket related, it might make you feel better that we in fact made the Ferry.... it can be done!

http://www.defendersource.com/forum/...ad.php?t=32301
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  #27  
Old February 1st, 2015, 01:23 PM
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Paging Austin crew and their flatbed.... Sound has progressed to almost unbearable yet nothing out of the exaust pipe and starts quickly every time. The lash cap was indeed gone on #7 but tightened up the lash enough to get home and get new cap. Pretty well everyone on a city block can hear the knocking once fired up now. Metal on metal clank. I know shouldn't run it but the only symptom and the only problem to this is the sound. ALL else seems to be fine? Maybe a loss of power but I'm certainly not revving it strong like I would driving normally.
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  #28  
Old February 1st, 2015, 01:24 PM
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Personally I would seriously consider pulling the head and see what's going on in there. You can see the pistons move, cam rotation, etc.

It's not that hard of a job, you would just need new gaskets.
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  #29  
Old February 1st, 2015, 01:27 PM
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I had an intermittent knock like that in a 2.5na diesel once, in the end a rod cap fell off and the engine was done for.
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  #30  
Old February 1st, 2015, 01:31 PM
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Also is it possible your timing adjustment gear was loose and the timing has been slowly going out? You mentioned something about a shop just doing the tuning.
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  #31  
Old February 1st, 2015, 01:31 PM
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I don't want to sound negative, but you are basically signing the death warrant on your engine by running it again and again without taking off the oil pan and the head.

I am recommending that you stop running the engine!!
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  #32  
Old February 1st, 2015, 01:36 PM
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Can you isolate the source of the sound with stethoscope or say long screwdriver.

Can high EGT damage valves?
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  #33  
Old February 1st, 2015, 01:39 PM
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Do you have oil pressure? An oil passage could be clogged after the oil pressure switch. I drove a Disco into the shop once that had a failed oil pump and the motor ran fine, but obviously knocked very badly. Surprisingly the engine was okay after installed a new front cover.
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  #34  
Old February 1st, 2015, 02:32 PM
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Not running the motor any more. Just went ahead and adjusting for missing cap and tried to keep going as advised. Guess it's more than that. Sitting in front of Texas Diesel Power, inc and will see what they say when I get back to the truck in the morning. The Ms has a flight to catch out of Dallas tomorrow before our trek north.
Things happen and GBR knows I sing their praises. The shop Bill had the truck tuned at maybe tuned it up a couple degrees more than it should have been. Even still we've run it all over the country since and just wanted it tamed a bit for better cruise and economy.
Robert just got a pretty good listen and his diagnosis is head gasket
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  #35  
Old February 1st, 2015, 07:11 PM
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What about the Dog nut on the crank damper. When those are loose it allows the damper to move back and forth creating a knocking noise.
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  #36  
Old February 11th, 2015, 02:29 PM
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Hooked up Ryan with Mike at Ferraris & More in Garland, TX.
Mike pulled the head and found a blown head gasket, cracked piston, and a leaking injector.
Ryan was able to source another engine close by and Mike installed it and had Ryan up and running again in a few days.
We spoke this morning and Ryan is on schedule to make his trip to AK.
Drive safe, Ryan!
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  #37  
Old February 11th, 2015, 02:38 PM
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damn. that's a lot of damage. you think the leaking injector cracked the piston?
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  #38  
Old February 11th, 2015, 02:54 PM
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Quote:
Originally Posted by Overlander View Post
damn. that's a lot of damage. you think the leaking injector cracked the piston?
Not likely.
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  #39  
Old February 11th, 2015, 03:51 PM
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Quote:
Originally Posted by rdavisinva View Post
Ryan was able to source another engine close by and Mike installed it and had Ryan up and running again in a few days.
We spoke this morning and Ryan is on schedule to make his trip to AK.
Drive safe, Ryan!
good to hear!
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  #40  
Old February 11th, 2015, 03:58 PM
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What a major ordeal. I'm glad it go all sorted out and he will make his ferry back home.
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