Added: 3 years ago
From: x1ceMaNx
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  • The oil didn't fix it. What you actually did was just added more oil. Vq's burn a lot of oil. Keep a close eyeon your look oil level.

  • what causes this?

  • Change the oil, to spec

  • knocking usually means spun rod bearing, check oil for metal flakes, usually gold color

  • um, I know I'm going to get called some bad words cuz I'm going to say this, but I do it all the time on my cars. But I would try motor flush, if you don't change your oil (not saying you don't) it causes issues like this. Also I have had issues where if you use the same engine oil for a really long time, even if you change it, it starts to stick together even after changes. I do it to my cars every few oil changes just to keep the gunk for sticking together.

  • just by hearing the sound of the no one can predict the cause of knocking well its piking sound that's travel between the combustion chamber you should service your car in nearby service center.

    the main causes of this problem are

    high compression ratio

    over heating of the piston block may be the lack of lubrication

    there may the carbon formation in the fuel injector which get heated up and becomes the secondary source for preheating. ultimately cases the runaway knocking

    08871691299 india

  • Oh Yes the Amazing Knocking noise. I had the same problem with my G. I hate to say it but you have one or more spun rod barring. There are a few ways you are able to go about fixing the car, replace the spun barring (for temp fix) or build the bottom end (strong forged internals). Either way the motor is going to have to be ripped apart so if you have the extra cash build it.

  • piston pin

  • this is called tapping

  • 91 octane?

  • the timing was off ? hell i dont know ! lol!

  • @dukviper90 oh no it's the grammar police.

  • @Sl1SHAD your an idiot

  • @iliketodothingskk "You're, not "your." If you are going to insult someone, try not to look like an idiot yourself.

  • geez idk keep looking at the tire, maybe the knock is coming from there

  • @SI1SHAD ... you fucking serious?

  • @xFReSHeReST lmfao yes im serious maybe the knocking is coming from the fucking tire XD are you fucking serious? watch the video maybe you'll understand...

  • Might have been limp mode

  • either its a miss fire or you might be low on oil or using the wrong type

  • its not knocking...its a diesel....lol....JK

  • cams. lol

  • If you are at a funeral and you hear a knock, this is malpractice suit territory.

    Engine knocks are wonderful to hear. Enjoy the knock while you can.

  • whoa wait i still use mobil 1

    should i switch too????

  • @modigga3 really now

  • lemme take a wild guess.ummm mobil one right?

  • ...and oddly enough it doesn't sound any uglier than a properly working g35

  • i know whats wrong its a diesel..lolol

  • What did you expect? It's a Nissan. It's a blue collar car in Japan. They make em powerful and nice until they fall appart 2 years later.

  • I know the problem, Its called Nissan!

  • In my opinion, it sounds like top end (cams, lifters, valve train) as opposed to bottom end like crank, rods, ect.

  • sound like piston slapping?!. have you been using high octane fuel?

  • your shits done buddy get e rebuild or used motor

  • @Angelus12308 No doubt, compression ratio is not always the same, I'm referencing to the engine in this video and I'm talking about knock sensor not O2 sensor. I wasn't talking about fuel being burnt in two different places nor how much of it burns. You're going off topic. Keep your idea simple so the audience could understand.

  • @Angelus12308 compression ratio of a cylinder is always constant, I'm talking about air pressure (air being compresed by piston) in a cylinder not compression ratio. More air in the cylinder increases pressure which result in temperature increase which causes premature combustion and may result in detonation obviously the knock sensor should tell the ECU to inject more fuel but the fuel injector has its own limitation. Need i explain more? I really don't want to explain more.

  • Comment removed

  • @Angelus12308 yeah, that's exactly the same. More air = more air density = higher pressure.

  • @Angelus12308 you mean the engine is running lean meaning more air than fuel injected into the cylinder.

  • use higher octane gas like 93

  • its fucked

  • is there smoke or blow-by that comes from the hood? when the vehicle is warm.

  • what year is it?

  • @bulfric first change your oil and don't put in the cheap stuff. Then use higher octane gas...the cheap stuff is lean and leads to preignition easily. If the knock is still there check or replace your EGR valve. It controls the temp of the combustion chambers by recirculating spent exhaust gas back into the comb chamber effectively reducing the temperature. If that doesn't fix the problem retard the timing...

  • can anybody help me?I have dodge avenger 1996 and when I start it,it's all good,but about 3-5 minutes later it's start knocking like hell,and when I hit the gas it knocks even more and faster,,,,,what should I do???thank you

  • @bulfric

    retard timing if possible,

    premium gas,

  • @bulfric Have carbon build up on top of the piston and Valve stems. try some o fthe engine cleaners and high octane fuel

  • swap the motor it sounds like its about to seize soon

  • holy crap sound like diesel engine.

  • that not a engine knock its ur lifters one of then started knocking

  • A OHC (over head cam) engine does not have lifters, I can't count the number of times people screw this up. Most engines these days are OHC since OHV technology is about as old as the hills and terrible for economy and making high RPM power. I'd say with 98% certainty that if it is not an American made engine it is OHC.

  • @OBCblackhawk dude you are wrong, overhead cam engines have lifters they dont have pushrods

    it would not turn out too well if the cam lobes were pushing on just valve stems....

  • No, there are NO lifters and no "lash" in OHC engines. There are cams shafts, valves, keepers, and retainers. the cams slide against the retainers; thank you very much. when talking lifters and pushrods that is STRICTLY OHV engines.

  • correction, the cams do slide against the valve stems. as for OHV you have a central camshaft, followers, pushrods, rocker arms then your valve assembly which the valve, spring, keeper and retainer. In that case the tappets on the rocker arms push/slide against the valve stems. So in a OHV there are many moving parts that slide and push against each other which creates your valve lash. Which is just play/wiggle between the parts.

  • @OBCblackhawk That depends on the design. My OHC has the cam lobe operating on a lash pad which is on top of a rocker arm and the rocker arm is ontop of the valve stem. And it dose have lash

  • I have the same problemn on my 2001 maxima same sound... VQ30DE can you tell me what should I do?

  • @InfiniteMaC

    Check the oil level first, then try and find out from what section the noise is coming from. As for the VQ30DE I don't know much about it so some googling and/or asking around elsewhere might help. But If your engine sounds as bad as this you have a serious internal problem developing most likely. you can use a long screwdriver with the handle on your ear and the tip on the block to help locate the knocking sound. But the knock can come for a lot of things so the best bet is a shop

  • All Saturns made from 1991-2002 (S-series) used over-head cam engines... same with the 4.6L Ford engine (used in the Mustang GT, crown victoria, grand marquis, lincoln town car, some expeditions, etc).

  • @adventureoflink

    Never said american made engines

    were exclusively OHV, only that you are

    unlikely for find a foreign vehicle with OHV

    now.

  • Did you ever fix the problem? I have that exact noise coming from my car.

  • i doubt it had anything to do with the brand of oil but rather low oil. these VQ35DE engines burn alot of oil I found, my altima was almost 1.8Quarts low on oil when I went to change it at 3k scary as hell. so in other words WATCH your oil levels CLOSELY. It only take 10sec of googling to find low oil horror stories with the VQ35DE engine, great engine otherwise.

  • my g35 sedan is a 04 and my engine burns alot of oil i did a oil change 4 k ago and im allready low on oil its the worst im selling this car

  • ehh it isnt that bad, its a great engine. You can fix it by changing the valve cover that contains the PCV valve (right side). That fix will slow the oil burn issue in most cases for 20k mi unless you already seriously damaged something by running it low on oil. valve cover is like 120-140 bucks I think, plus you can take the time to do a tune up and inspect things while you got it apart.

  • forgot to mention if you get the valve cover it comes with a new PCV valve so you dont need to worry about that. You might also wanna make a oil catch can while you're at it?

  • 50% broken piston

    50% broken cam or valve

    be sure man

  • @zinjeel I have the same exact noise on my G. about how much will this cost to fix?

  • sounds like a diesel

  • Bullshit you loser i know soooo many american vehicles that knock. When you do regular maintence to infinity vehicles they generally last a long time.

  • Infinity = Joke

  • @Deere842 It's spelled "Infiniti", there is no"y"...spelling is no joke.

  • @amirecan You are correct! I drive american cars

  • @Deere842 Sorry to hear that.

  • @amirecan I feel bad for you having to drive around in your recycled piece of foreign plastic you call a car.

  • @Deere842 Plastic? Every car the America "Big 3" makes are ALL plastic(Camaro, Mustang, Caddilac XLR, the list is too long). That's why they all went bankrupt and had to blow Uncle Sam for government aid, and they STILL shut down 60% off their dealerships. Domestic car suck, that's why no one buys them and they have zero re-sale value. Nice try though, but you're never winning this argument. Go enjoy your 30,000 mile warranty.

  • @amirecan I do agree with you on that one, All cars made these days are made very cheaply, I drive a 1978 dodge b200. The warranty may have expired already! I would not buy a modern car these days, I'll stick to my good old Cast Iron V8. If it makes you feel better about yourself, Concider this "argument" won. You have your opinions and I have mine.

  • @Deere842 You are correct. But you're part of the 1% club, meaning atmost maybe 1% of society would view cars as you do; "olds ones are better than new...i would not buy a modern car"..etc.( I actually agree with yo 100% on this, almost all new cars suck, older iron V8's do hold up MUCH better). I guess mass production and bottom-line, low-cost produstion has it's draw backs, haha, Domestic AND Foreign. Can we atleast agree that European cars are garbage? ;-)

  • @amirecan Haha, Know what you mean. I Agree, every car has it's problems and alot of them are due to lack of maintaince!

  • @amirecan

    Old iron v8 are nice and sturdy yes but aluminum blocks with steel cylinder sleeves are even better but very expensive. I love my cast iron block.

  • @blargblarghonk After an engine fire, aluminum looks Salvador Dali-ish. International engine blocks i.e. 13 L I6 are a special iron alloy. The engines have a 1.4 million mi. TBO. I wonder how much aluminum was recovered from the Shuttle wreckage? Aluminum, as we know it will always let you down.

  • @amirecan cept for dubs

  • @kmohnke tru dat

  • this sound comes from driving chain

  • ( The drive chain tension is maintained by oil fed tensioner pads ).

    oil fed tensioner must be change

  • how much did castrol pay you to say that in the information

    just kidding it really does work

  • It turned into a diesel.

  • Step 1 Bought new vehcile

    Step 2 Maintain vehicle

    Step 3 Check Oil Weekly

    Step 4 Change Oil When specified by manufactuer

  • you probly have a bent rod or something like that

  • use octane booster

  • you should get that checked out, you stated you changed the oil but that only helps temporary, i see it all the time with people selling tuners (civics/integra's......) if engine starts to knock they put in a heaver oil and it severely lower's it for a while.. i may be wrong in your case but thats my 2 cents

  • yea the knocking was lowered and i also reset the ecu and the noise was gone...but i dont need to worry about that anymore because i just traded it in for an 09 g37XS last month...:)

  • wow, me want the g37 :'( enjoy it man :)

  • yea nice thats what it comes down to these day. if ur bitchass cant figure it out, now a motherfucker will trade it in. whats this world coming to...

  • @x1ceMaNx

    Have you checked the computer for any emission sensor errors. A bad or clogged EGR valve or o2 sensors in certain types of fuel injection systems have been known to cause this.

  • @x1ceMaNx Hey shows us a video of it. I love that car

  • @MillyFlow amm but after some time will knock again like this. look at the cylinders... maybe are damaged....

  • @MillyFlow

    hey my 03 civic si with 120000 started having a very light knocking sound, do you think is it just a time to move on to heavier oil?

  • @mrblockboii are you sure it's actually knocking, and that it isn't something like your valvetrain or possibly even injectors? I had an EP3 hatch, same engine obviously, and I heard it all the time, and you should ALWAYS use what Honda recommends, because these engines are machined to very tight tolerances, and need a thinner oil to get into all those tight spaces. I think you have nothing to worry about.

  • @CivSi02

    hey thanks for the reply!

    it makes very light knocking sound, and i can only hear it when the car is in neutral and idling. but otherwise when the car is running on the road everything looks and sounds fine as is.

    im using 5w20 for now but i think i should move on to 5w30 or maybe 10w30 if i needed.

    i will upload the vid of my car idling sooner and let you hear it.

  • @mrblockboii if its a ticking sound you might just need a valve ajustment if it sounds like that its probally a spun baring or rod.

  • ur oil pump or pan is damaged

    i got a altima 3.5 (same engine) that was the first state, it will go WORSE i can upload vids if u like of mine

  • dudee i have the same problem! check my vid out and do you use reg gas or premium? cause i use reg and ppl tellin me i need to use premium

  • Needs MOAR octane.

  • i thought mobil 1 is better the castrol syntec?

  • Sounds like rod knock, spun a bearing most likely, I had a Mustang years ago that sounded the same way. I wouldn't run it too much like that if it ceases up it'll throw the rod. It is still fixable but it'll cost you alot. Good luck. Id have it towed to the shop for evaluation.

  • ALL engines have connecting rods, you know the cast or forged pieces of metal that connect the pistons to the crankshaft!! Just sharing a past experience. Thanks for your response, I prefer the power and sound of my Hemi over a smaller v-6.

  • Was thinking pushrods, So much bad luck with these.

  • Understood, and rereading my response I was a tad juvenile, we all have our opinions. Either way I hope my engines never sound like that!

  • this must be the stupidiest answer i EVER read!!!

  • It could be spun crankshaft bearings or damaged piston rings

  • bent rod?

  • the problem here is some pleb has thrashed the arse off it and not run it in from new.

  • you blew something

    you were racing ricers huh? lol

  • what happend run out of oil or no oil change or did you redline the engine or was it just effected when it left the assembley line

  • You can see the damn crack in the manifold. Freaking duh to all of you.

  • -tapping noise for a VQ35DE DOHC Engine, It could be

    Valves need adustment

    timing chain pulley bent or Tensioner worn

    Harmonic Balancer (Crank Pully) loose on crank

    Bent Cam Shaft

    Perform a Compression test to check your valves.

    As for any thing else you will have to take a Stephiscope locate the noise, and disassemble the engine and do a hard visual inspection.

  • Idiot. The valves are self adjusting.

  • If it was a cracked manifold the noise would be alot louder then that.

    What kind of fuck'in ASEs do you have??

    Sign up for UTI Rookie, then call me when you overhaul and rebuild your first Nissan DOHC Engine.

    AND THE VALVES DON'T ADJUST BECAUSE IT A TIMING CHAIN ENGINE, NOT A TIMING BELT!!!

    Research and get your facts straght before commenting!

  • haha well said, i dont see VVT-i on top

  • wow you think your pretty smart huh, you can adjust any valve by lapping it and refaceing it dumb ass, self adjusting or not. AND TIMING BELT OR CHAIN DOESN'T MEAN SHIT, MORON!!!!!

  • please help me fix it. hahaha. maybe you should help urself and quit redlining it every time you touch the gas.theres no please help say a magic word. it needs repairs.

  • Rod knock caused by engine abuse

    most likely over revving

  • what year of G35 you have?

    is it a 05+ 6MT model?

    if so you should bring it back to dealer for oil consumption test. Many 05+ 6MT out there now are having problems with engine oil consumption.

  • hmm.. is that engine knocking? sounds more like a tappet noise..

  • Could your timing be off?

  • Any update?

  • my engine knocking has disappeared...i change the weight of the engine oil to a 10w30 and poured in a quart of rislone's engine treatment and the knocking went away.

  • Was your oil burning as well?

    I'm having the same problem since I put in my Catbacks, getting a lot of backfire/oil burning.

  • is 10w30 the cars original type of oil?

  • no..5w30 is the orginal when i got the car...but i run 10w30 when the temperature is higher like around spring or summter time.

  • High rpm abuse, seems mine has the same issue, i have a 2k maxima with a 3.0, listen in my video.

  • Judging by that air intake, I'd say that it developed that knock after some high RPM abuse. You're going to need either an engine rebuild or a new engine. Best of luck.

  • if i were u i would take it to infiniti but if not then see if you know a friend that works a any car dealership and ask him/her if a tech can look at it cause they might do it for free.

    what octane gas do u use

  • yea..i have a friend that work at subaru and maybe i'll bring it there to let them check it out...i use premium gas from sunoco and shell

  • Aw man that sounds horrible!!! what did you do??? you gotta get that checked out.... best thing to do with those cars... dealer is best place to go... good luck bro!

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