[Mike92se]

1.6L engine. It makes this loud Knocking noise. Just started. Now it wont go away, WHATS THIS FROM! Its coming from inside the engine, around the 3rd and 4th spark plug. It increases with the engine. Sounds like something is inside it bangin the shit out of something.

 

[nissanracer805]

did u advance the timing on your ride? if u did, it might be detonation, in which case if u dont retard the timing, youre engine's F*cked....

 

[W10DET2020]

1.6L engine. It makes this loud Knocking noise. Just started. Now it wont go away, WHATS THIS FROM! Its coming from inside the engine, around the 3rd and 4th spark plug. It increases with the engine. Sounds like something is inside it bangin the shit out of something.

Check your oil dipstick and look for brass (gold) flakes it sounds like you could have spun a bearing.

 

[Mike92se]

The only thing i did was mod the intake. To a cone

 

[Niss200SXGTR]

dirty air.. mixed with fuel makes dirt/metal chunks.. could be gathering on the top of your piston.. making a clinkin noise.. check it out

 

[blownb310]

Hmmm...Did you drive through any deep water recently? I have replaced several GA16DE's that ingested water, and hydra-locked. That means water got into the cylinder [water doesn't compress like air does], and when the piston came up, it couldn't compress the water, and bent the connecting rod. All three of the customer's engines I replaced, had a bent rod. The noise came from the side of the bent rod, as it hammered the bottom of the cylinder wall each time it passed. Other than that, it ran fine. I actually benefited from this, as I got to keep all of the old engines, and fix them. I used two good rod and piston assys from the bad engine, to repair the other two. I honed the cyliders of both, and reassembled them So, for the price of two head gaskets and a tube of gasket maker [for the oil pans], I had two good GA16DE's at my disposal.

 

[Mike92se]

Hmmm...Did you drive through any deep water recently? I have replaced several GA16DE's that ingested water, and hydra-locked. ...

No i havent...

 

[azkicker0027]

no advance timing, no water exposure, did you over-rev the engine by any chance???
dirt/metal chunks......what????should that have fouled-up the spark plug, and mess up the valve going into the cylinder somehow???

 

[hagasan]

If the motor is still running but the KNOCKING is still there...you might have (or did...) a oil starvation problem... Check you oil pump...and oil level...
I know when i used to start my car I would hear a knocking until the oil pump got into a full swing...then it would go away...
Did you check your oil...?? Any there...??? Hopefully...

Don't mean to piss on your parade...but by now, you might wanna give blownb310 a call with his spare GA's....cause the noise ain't going away by itself...

It's most likely a rod problem though...like blownb310 said...

I've never spun a bearing so I can't prove or disprove W10DET2020 opinion... but a spun bearing would come out of a oil starvation problem though...so that's defenitally something to look into...

The only other thing I can think of is that your timing chain is streched (or about to bust...) so the cam timing is off...therefore the pistons are connecting with the valves or allready chipped some of them...
But I would think that would not last long... Besides that would propobly sound more like ringing noise anyways.

...my two cents...

 

[blownb310]

hagasan said "Don't mean to piss on your parade...but by now, you might wanna give blownb310 a call with his spare GA's....cause the noise ain't going away by itself..."
*****One went in my brother's '91 Sentra [that I bought with a rod through the side of the block], and the other is now in my '89 4WD B12 wagon.

 

[Burnedout92se]

I had the same problem...

It was my clutch making the noise, i have no idea what it is, im still trying to find out whats up with it, but maybe someone here has the same problem. I took mine to nissan and had them rape me with the prices, but atleast its fixed

 

[azkicker0027]

so they replaced the clutch, how much, still thinking of replacing it myself, but don't have time, not too bad though, just did a 5000 drop and slipped through all the gears and stank like crazy, but still runs though, only slips with the 5 grand drop.........still have some life in it..........

 

[hagasan]

I have the same thing....It only makes the noise when the clutch pedal is depressed. I was told but the previous owner that when the clutch was replaced...the shop failed to replace the throw-out bearing...

In any case...4000 miles later...car is still kickin, the noise is the same but the clutch holds.... So no visit to my mechanic until something really busts...

 

[RayBrandtNissan]

Rod Knock

It sounds like you may have a rod knock. My advice is to go to your Nissan dealer or a reputable independant repair facility and have them diagnose you car, you may have to pay for the technician's time; but think of it as an investment. The technician will tell you what your problem probably is; REMEMBER unless he tears apart the engine, there may be more damage than initailly indicated. Then if you want, you can shop around and find other shops that do this sort of work and get estimates. ALWAYS use a well known or trusted shop, and don't forget to contact the Better Business Bureau. This is major work and you wouldn't want to trust just anyone.
If you have any questions feel free to e-mail me at
Ray Brandt Nissan Answer Guys

 

[maxair74]

i have a knock under the valve cover near the chains and i did not start until after i put gas in it.it had been sitting for about a year with a 1/4 of gas in it.i just replaced the timing cover,tensioner,cam gears and chain.i put 87 octane in it.would that cuase the car to knock like that or what could?