2001 5.4l Triton Engine Knocking Noise

[JonnyQball79]

I have a knocking noise coming from my motor which seems to go away after start up and then come back after a few minutes. I have 3 videos of it: I have checked the spark plugs. I'm really hoping its not a bent rod or any of that nature. I heard it pretty good underneath by the transmission and flex plate area I think. I can change and fix parts and such, Just not a heavy duty mechanic. The third video is from underneath back by transmission.

 

[Plati]

any chance that's an exhaust leak?

 

[JonnyQball79]

I've heard guys say that, but in the third video towards the end when i was back by the tranny and I heard kind of a twinge of metal when I was recording.

 

[stamp11127]

Rod knock. Drop the oil pan and tap the rod caps with each piston at tdc with a rubber mallet. You'll find it.

Or you could use the "redneck stethoscope" which is a stick or broom handle cut to length. Place one end at your ear and the other at various points on the oil pan. When you get close you will hear the difference.

For sheets and giggles check the oil level also.

 

[JonnyQball79]

How bad is that to fix usually?

 

[stamp11127]

Not for the average Joe. Really depends on what has failed and if it has caused any other damage internally.
Easiest is engine replacement once the cause has been verified. We diehards on here would tear the engine apart and do a rebuild. Crate engines are the way to go if you are short on time.
If you decide to pull the oil pan, once the offender has been found you should also check the rod journal on the crankshaft for damage. If you are lucky you may only have to roll in a new set of bearings. Most of the time though the crank is shot.

How many miles are on the clock?

 

[JonnyQball79]

I don't have that kind of money. Theres no easy fix?

About 165,000.

 

[stamp11127]

Nope. The easiest is to dump it once the rod knock has been verified. Anything else costs money.

 

[JonnyQball79]

I found a guy that was able to change the bearing from the rod he found loose on his 03 by dropping the oil pan.

 

[stamp11127]

One other thing to check - it is a long shot though. Check the serp belt tensioner to make sure it isn't all the way to the end of its travel from a stretched belt. They make a racket when they are at the stop.

 

[stamp11127]

You can do that as long as the crank isn't damaged, the rod cap isn't bent and you check clearances before buttoning it up. You'll need a good torque wrench to torque the cap.

 

[juan214]

If it runs fine other that the knock. It may be a valve guide that split in half and is knocking up and down in the cylinder head. You did the plug check, then check exhaust leaks as suggested, then crank bearings as suggested. Beyond that everything else will cost money. If the a guide snapped it will sound just like an engine knock, your talking a head job.
Good luck

 

[rjdelp7]

Stick your head in the front wheel wells. It may be a exhaust leak at the manifold. You may have a cracked manifold or broken stud. Mine has a small leak in the front converter. Check them.

 

[stamp11127]

Where did the OP go?

 

[Sgt Darkness]

I don't have that kind of money. Theres no easy fix?

About 165,000.

I know the “don’t have the money” feeling. It really sucks. How’s the oil pressure? From looking at the vids it looks like you have done a recent oil change? My oldest Son buys cars that have same type noise and 7 times out of 10 a fresh oil change has corrected the knock. Dirt and crud can cause the lifters or a lifter to malfunction that’s why I was asking about the oil change. Trying to think of a cheap fix you can do without using a bunch of money.

 

[Mad Oshea]

You may want to check the injector and coils. That will do it on a pause type ,Just to be on the safe side. Mine did that. 1st gen 5.4

 

[1955moose]

Stamp, Johnny Q ball might be in a pool table tourmanent like Minnesota Fats! What's your saying, **** their goes another Op!

Sent from my N9131 using Tapatalk

 

[stamp11127]

Guess we will have to wait and see if he returns with an update. Sad fact is if he doesn't do anything about it, the engine will.

I would expect a huge decrease in performance and a massive increase in crankcase ventilation.

Any mechanical machine "talks" to those that are willing to listen.

 

[trhymers]

try a stethoscope on the catalytic converter. my pass side is knocking like crazy. banging on it with a rubber mallet you would hear a rattle also.

 

[JonnyQball79]

No I'm not gone. Just stressing and trying to find anything that will keep me from dropping the oil pan. :-( So after rechecking my plugs(hoping and praying), decided to check out the exhaust manifold. Found these two bolts broken off I think. I do not want to drop the oil pan.