Whats the cause?

[brokestudent]

Ok so if you notice my post earlier the truck broke down today. I let the truck sit and then start it up and it purrs perfectly then I start having the same issue again pull over and it was making this noise

Truck noise 1963 c 10 - YouTube

Did the same thing earlier too. I am thinking oil pump going out since it takes a while to start doing this? I check the oil and the level is fine I just had an oil change etc so I am at a loss here guys.

[tincan1966]

That's a whole lotta rattlin' going on!. This is merely a guess, but sounds like the rod bearings are going out. Possibly time for a rebuild.

I strongly recommend NOT driving it, until it can be properly diagnosed.

[Slow Build]

Why are you starting a third thread on the same problem?
( http://67-72chevytrucks.com/vboard/s...d.php?t=616466 )
( http://67-72chevytrucks.com/vboard/s...d.php?t=616323 )
It's better to keep all the info and replies on one thread.

Hard to tell what's knocking in the video, but it doesn't sound good.

[brokestudent]

Was not trying to start a new thread, just that I got it running again and this noise pops into the picture. Kind of related kind of not I do not know....My issue is it does not always make this sound when it first starts up and is running it purrs beautifully. This is after like driving it for 30 minutes this starts. I can drive it around town all day but taking it out of town it does this. If it were the bearing (and correct me if I am wrong) but wouldn't it do it all the time?

[tincan1966]

You can always keep driving it and whatever flies out the side of the engine was the problem.
OR
if you cannot find the problem, take it someone who can.
No one can accurately diagnose vehicle problems over the internet.

[brokestudent]

Wow tincan I sense some hostility in that. I was not trying to knock your advice or anything it is appreciated. I agree a rebuild is needed, and I agree that it should not be driven until done. I was just trying to see if there is something inherently wrong with this that causes this issue, something that is common etc. I am new to this engine so I was trying to see, to me it seems very odd that it does it after running for a bit but runs great until that time. Maybe I am wrong this is common I do not know

[tincan1966]

nope, no hostility, just being a smarta**

[brokestudent]

Tin I actually am coming up to Caney, KS for a job....maybe I can bring it up to you and you can tell me what is wrong with it haha

[tincan1966]

there's countless threads on here about people asking advise on "what's wrong with my truck" which normally end up as a big pissing match and arguments over differences of opinions.

The truth is, as I mentioned that no one can accurately diagnose issues over the internet and especially not intermittent/drivability problems. there are too many factors that could cause similar issues.

Some take it as mean, but I am just mentioning cold hard facts.

[tincan1966]

Originally Posted by brokestudent

Tin I actually am coming up to Caney, KS for a job....maybe I can bring it up to you and you can tell me what is wrong with it haha

C'mon up I am open Mon-Fri

[AcampoDave]

You can use a wooden dowell as a stethoscope listening with your ear on one end and motor on the other. Move the dowelll around and see if you can hear anything before the noise becomes deafening. I'm thinking it's quieter at first because the oil is cold and thick. My guess is a spun rod bearing.

[firemanjimtfd]

The more you run it the more damage you are doing . Drop the pan and I'm sure you will find it.

[Sharps40]

Yep. Time to reengine the fleet. Park it or itll die ugly.

[kieth]

Originally Posted by brokestudent

Was not trying to start a new thread, just that I got it running again and this noise pops into the picture. Kind of related kind of not I do not know....My issue is it does not always make this sound when it first starts up and is running it purrs beautifully. This is after like driving it for 30 minutes this starts. I can drive it around town all day but taking it out of town it does this. If it were the bearing (and correct me if I am wrong) but wouldn't it do it all the time?

What engine is it ??????? the you tube video did not show up on my computer..

[TJ's Chevy]

Originally Posted by kieth

What engine is it ??????? the you tube video did not show up on my computer..

Straight 6 Keith...Probably a 230 or 250. I watched the video...Believe me....you don't want to listen to it. Talk about a seriously ticked off engine.

[donthekawguy]

That does not sound good. Find a cheap 350/350 on craigslist, put a brick on the gas pedal making sure you film it, swap motors and go on with life.

[Sharps40]

Originally Posted by T.J. MCCAULEY

Straight 6 Keith...Probably a 230 or 250. I watched the video...Believe me....you don't want to listen to it. Talk about a seriously ticked off engine.

Yep thas morin one loose rod or slappin piston. If unbuttoned before any more damage is done it'll likeky be rebuildable or for 1500 get a reman 6 or abit more an 8.

[tincan1966]

Originally Posted by donthekawguy

That does not sound good. Find a cheap 350/350 on craigslist, put a brick on the gas pedal making sure you film it, swap motors and go on with life.

Not all these trucks have to have a 350 in them. These old 6's are just as reliable.
Matter of fact, I am getting ready to ditch my old worn V8(305) and go back with the inliner. And before I get bashed about it being a 305- it's just as good as a 350 and has 265,000 miles without being overhauled, just good maintenance by the previous owner of the donor.
Besides that- they rank up higher on the kewl factor. LOL!

[1963c-10]

Hmmmm....doesn't sound good whatever it is. Time to pull it out and apart

[Sharps40]

Get an I6, its ain't JAFSB, its More!

[TJ's Chevy]

Originally Posted by Sharps40

Get an I6, its ain't JAFSB, its More!

AMEN BROTHA! Preach it like it is!

[joedoh]

sounds like miss and detonation. your gas tank is full of rust and scale. its getting pulled up to the filter where the suction is blocking the flow and the engine starts to run lean being starved for fuel. when you turn it off or it dies, the suction goes away and the rust/scale falls off the filter material. start it up and its powerful again, until the suction plugs up the filter.

clean out your tank.

[TJ's Chevy]

Originally Posted by joedoh

sounds like miss and detonation. your gas tank is full of rust and scale. its getting pulled up to the filter where the suction is blocking the flow and the engine starts to run lean being starved for fuel. when you turn it off or it dies, the suction goes away and the rust/scale falls off the filter material. start it up and its powerful again, until the suction plugs up the filter.

clean out your tank.

That is a dang good point....I think I had that or something similar to that happen to me...except my engine would just die. I do hear a miss when I listen to the video.

[63burban]

Biggest mistake people make with an inline is running them 75mph with 4:11 or even 3:70 gears. Inlines don't like that, they eventually make noises like yours and costs a bunch to make them happy again. Just because it's running smooth at high speeds doesn't mean it's ok. I agree it's not generally a good idea to diagnose problems on the net but your engine sounds worn out. Rod bearings shot.

[Sharps40]

Well now . Thats an easy test. New fuel filter, clean the carb and test it from a clean one gallon jug o gas. If better purge apnd rebuild the fuel system. If not. Rebuild the motor.