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Ford Truck Club Forum > GARAGE TALK > Garage Talk: Paint & Detailing



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  #1  
Old October 8th, 2011, 03:18 PM
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Default Engine knock, different oil?

It seems the ol girl has developed a bottom end knock. Don't know what it really is. I was hoping it would go away with an oil change, no such luck.
Is there any different type of oil I could try to maybe lessen or quiet down the knock. I know the 300 is a loud motor but this is noticeable.
I use advanced auto brand 10w-40 with a drive works filter now, it has been using 10-40 since new. It burns or leaks a quart every 3000 oil change, I think it's leak more than burn, but I know it has to burn some.
So is there any suggestions out there? Heavier oil? Straight 30 weight or something?
If not, it's got high miles and it still runs fine so it's not a huge deal. :salut:
  #2  
Old October 8th, 2011, 07:38 PM
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Is it time to give the ol 'high miles' girl an internal checkup?



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Old October 8th, 2011, 11:48 PM
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Good god I hope not. I need this truck now more than ever. College leaves me Barely enough time to change the oil let alone tear into it.
I would just swap a running motor if it came to that.
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Old October 9th, 2011, 06:54 AM
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you can try a thicker viscosity oil or an oil additive. in an attempt to quite her down. but if its knocking usually its a rod bearing going bad.

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Old October 9th, 2011, 07:54 AM
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sorry to hear that about Ol Red, I dont think a change in oil will do anything; if your fer sure its the bottom end

a quick fix on the 300 is to drop the oil pan and install new crank/rod bearings

something you could do on a Sunday

you know it can get very costly if you let it go on knocking


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Last edited by JSoko; October 9th, 2011 at 07:57 AM.
  #6  
Old October 9th, 2011, 01:20 PM
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Biker trash said his 300 was doing the same and it turned out the be the smog pump, I'm hoping for that.
If not I guess I'll look at getting some bearing and caps n such.
I have a whole month of for christmas break, but I think I would need to get it done before then.
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Old October 9th, 2011, 01:38 PM
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First off, I'm gunna do some diagnosing, hoping it's the smog.
I've been looking though and what is more cost effective, doing the bearing on an abused motor with 251k miles, or dropping in a 95 maf motor with 55k miles.
I should be able to get it free since stewy gave it to this guy for free.
But what else would I be looking at possible replacing while doing this?
I don't have en engine cherry picker of my own, my uncle used the chains over the rafters and a whatcha ma call it hoist to pull motors, I don't know how to do that though. I know some of my other uncles and cousins have engine stands and cherry pickers however, so we are safe there.
So other than the motor I'll need all the fluids, engine mounts I'd imagine mine are shot, what else?
I'm gunna go try to get a video of this knock now, but it sounds a lot like what's in this video.. http://www.ford-trucks.com/forums/10...placement.html
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Old October 9th, 2011, 05:08 PM
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Reckon it depends on what you find and how deep your pocket is.



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Old October 9th, 2011, 08:02 PM
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I have the tools and ability to do either, I have the pockets for a pedal bike.
It seemed to me that the knock was gone if not gone really quiet after the truck was run pretty hard and good n warm.
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Old October 9th, 2011, 11:01 PM
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can you drop the pan without much trouble? got any plastigauge?



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