What is that noise in the engine??

hello everyone, one question, well, i do not know mechanical stuff, so, i want to know what could be this sound (noise) in the engine, like taka, taka, taka. Some ones said me that could be a failure in the oil pump?, almost always, when the engine is warm it does not sound, what do you think???, thank in advance for your answers, comments, etc.

i Leave you a link with a video, i hope you can see it.



Greetings

 

First guess is exhaust leak at the manifold.

Could also be a tapping lifter.

Does it sound louder near the exhaust manifold? If so, pull one spark plug wire at a time. If it goes away on one, that is the cylinder you are getting the leak on.

If none are leaking, you can pull a valve cover with engine off and start checking the play in each of the lifters/rockers.

By the way, good video and good sound. It almost even sounds like the tap is coming from down by the driver side #6 or #7 cylinder exhaust in the video.

 

Sounds like a lifter to me. Pull the valve cover from the noisy side. If you don't mind cleaning up a little oil, idle the motor and touch the rocker arms one at a time. Think you'll feel the one that's noisy.

 

i appreciate so much your answers to both. first I am going to follow the advice for pull the wires of spark plug at a time, and then pull the valve cover to check .
but in any case is a complicated repair???
And yes, scooper77515, the noise come from driver side.
greetings

 

In my experience, the lifter failure was a higher pitched tap, but this sounds more like exhaust (I have had both issues). I hope it is exhaust. Much easier to fix and less expensive.

 

I had a ticking sound like that, just last weekend. It was the last rocker arm on the drivers side. At first I thought lifter. Then when I pulled the valve cover & wiggled the rocker arms I found the last intake rocker moving. Come to find out, I had swapped the intake rocker, with the exhaust rocker. The intake rocker has a washer. The exhaust doesn't.
Two years ago I had a tapping sound. Come to find out, the exhaust valve stem cap had a hole worn in it. Can't find any caps aftermarket. Ended up going to the wrecking yard, finding a 302 & taking the valve stem caps. Last weekend I also found I needed to replace 3 more valve stem caps. Lucky for me, I had a Comet 4dr parts car with a 302. I took them off that car. Now my engine is quiet again.... I hope yours is an easy fix, like mine was....

 

sounds like valve train, but if you said it gets louder near the exhaust manifold I would check the fuel pump, the fuel pump arm makes a sound like that when the spring /pivot breaks, take a long screw driver and put the tip on the pump and the handle at your ear with it running, do the same with the valve cover over each cyl. to see where the sound is strongest, you will find whats wrong where the noise is the loudest... also check oil to see if its over full or smells like fuel...I see that there is silicone around front cover has it been off recently??the fuel pump eccentric can come loose from cam , but wouldnt last long before it broke and leed to cam gear problems...hope it helps some.

 

To pin point your noise take a wooden stick ( broomstick , long screw driver ect. ) put one on the engine the other end to your ear you will hear the noise move the stick around on the engine you will be able to hear the noise the closer to the noise the loader the noise will be.


Jay

 

Great info, I got some of the same thing going on under the hood. Gonna have to try some of this over the weekend.

 

Thats valve train noise...You have a worn valve tip...a collapsed lifter...a bent pushrod(doubtfull...it runs too well) a possible rocker arm mounting stud pulling out of the head...A gummed up(plugged with sludge) lifter/pushrod or a worn/cracked rocker arm...OR...a loose rocker arm hold down nut.Pull the rocker cover on the noisey side and Idle the engine.Place the tip of a screwdriver on each rocker tip and hold it there firmly so it doesnt bounce(one at a time)The one thats noisey will give you a choppy feeling...the good ones will feel smooth.Good luck!!!

 

thank boys, guys. I appreciate your interest, today, i followed your advices and for be honest with you, i do not know what i can to deduce of the results, i listened the noise maybe in the 6 or 7 cilinder with a screwdriver, then disconnected each spark plug wire and i followed listening the noise, but this time, i saw a leak of water from seal of the head.
Pull the valve cover, and well, i found a break in a nut and some nuts looses slightly , i did tighten these nuts, the oil did not smell to gasoline and i did not see water in the oil, and finally, i putted the valve cover, when I started again the engine, the noise was there.
but not all is lost, I deduced a thing , my null experience with this mechanical stuffs. And now is time to go with someone who know about it

thanks to all you by the great, great, great help that always has offered me in this forum.

Leave the image of the break nut

greetings.

 

I still wish you luck with finding the problem and i still think valve train first (then go check other things if thats not it). I might have been over loading you with things to check . Im glad to see your willing to tackle working on it your self...and that you will get help when needed, let us know what it was when you get it fixed ... good luck!

 

I've never seen rockers double nutted like that before....

 

Is it just me or has anyone else noticed the slotted push rod holes A'la HP 289 with adjustable valve train???Wonder if his engine has a solid cam as opposed to hydraulic.If so...someones been foolin around with that engine...Or its an old 289.302s' had rail guided rockers after 69...Soo... round pushrod holes in the heads,not slotted.

 

Didn't HP 289 have screw in rocker studs?
I would try to bleed down a lifter. If they will not bleed down they maybe solid lifters. If they are solid you will need to set the valve lash.