91 maxima loud engine noise
08-25-2004, 10:49 AM
#1
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Join Date: Aug 2004
Posts: 24
91 maxima loud engine noise
hi. i just recently bought a 91 maxima se in 5spd w/100k with some problems.
the engine makes a really loud knocking noise at idle and even when revving. actually the noise goes faster as i rev. it sounds like metal slapping against more metal. i was thinking it could be the timing chain but this mechanic told me that the car runs on a belt. second i was thinking maybe a valve but im not sure. im about to get an engine swap but its gonna cost me $$$$$$$$$ so before i resolve to that could anyone out there maybe give me an idea on what else it could be? thank you very much for your response~
the engine makes a really loud knocking noise at idle and even when revving. actually the noise goes faster as i rev. it sounds like metal slapping against more metal. i was thinking it could be the timing chain but this mechanic told me that the car runs on a belt. second i was thinking maybe a valve but im not sure. im about to get an engine swap but its gonna cost me $$$$$$$$$ so before i resolve to that could anyone out there maybe give me an idea on what else it could be? thank you very much for your response~
08-25-2004, 10:53 AM
#2
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Originally Posted by nyczfuker
hi. i just recently bought a 91 maxima se in 5spd w/100k with some problems.
the engine makes a really loud knocking noise at idle and even when revving. actually the noise goes faster as i rev. it sounds like metal slapping against more metal. i was thinking it could be the timing chain but this mechanic told me that the car runs on a belt. second i was thinking maybe a valve but im not sure. im about to get an engine swap but its gonna cost me $$$$$$$$$ so before i resolve to that could anyone out there maybe give me an idea on what else it could be? thank you very much for your response~
the engine makes a really loud knocking noise at idle and even when revving. actually the noise goes faster as i rev. it sounds like metal slapping against more metal. i was thinking it could be the timing chain but this mechanic told me that the car runs on a belt. second i was thinking maybe a valve but im not sure. im about to get an engine swap but its gonna cost me $$$$$$$$$ so before i resolve to that could anyone out there maybe give me an idea on what else it could be? thank you very much for your response~
08-25-2004, 11:18 AM
#5
08-26-2004, 05:59 AM
#10
if your engine is knocking, it usually happens due to low oil pressure . Once the damage is done there is no quik fix for it except running heavier oil. which doesn't fix it but rather softens the blow between the parts.
08-26-2004, 06:50 PM
#14
Originally Posted by nyczfuker
thx everybody! ill get an oil change asap and ill post the updates soon~
Running synthetic after 100,000 miles Virtuallyguarantees a leak.
08-26-2004, 10:23 PM
#16
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Originally Posted by nyczfuker
i added a bottle of synthetic and the knocking noise went away but theres still that tapping sound so im not sure whats going on. what should i do?
08-27-2004, 09:30 AM
#20
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[QUOTE=DanNY]why? because you just found out about it from me? 
QUOTE]
lol if it makes you feel better like you discovered it or something...but I was actually looking for an intelligent answer not some link to some website... all oil stabilizers and cleaners work differently and can be used differently
QUOTE]lol if it makes you feel better like you discovered it or something...but I was actually looking for an intelligent answer not some link to some website... all oil stabilizers and cleaners work differently and can be used differently
08-27-2004, 09:42 AM
#21
[QUOTE=smokyman13]
if YOU want it...YOU find it. i'm not your google here rookie.
directions and what seafoam does it comes straight from the website. i'm not going to sit here and make up some story about it and go get my oil tested for YOUR benefit.
no i'm saying that you didn't know what it is and what does it do. you just took my recommendation from the other thread and put it here.
just like the incorrect info you posted on the other threads. if you don't know...DON'T POST.
Originally Posted by DanNY
why? because you just found out about it from me? QUOTE]
lol if it makes you feel better like you discovered it or something...but I was actually looking for an intelligent answer not some link to some website... all oil stabilizers and cleaners work differently and can be used differently
QUOTE]lol if it makes you feel better like you discovered it or something...but I was actually looking for an intelligent answer not some link to some website... all oil stabilizers and cleaners work differently and can be used differently
if YOU want it...YOU find it. i'm not your google here rookie.
directions and what seafoam does it comes straight from the website. i'm not going to sit here and make up some story about it and go get my oil tested for YOUR benefit.
no i'm saying that you didn't know what it is and what does it do. you just took my recommendation from the other thread and put it here.
just like the incorrect info you posted on the other threads. if you don't know...DON'T POST.
08-29-2004, 11:30 AM
#26
Originally Posted by nyczfuker
the mechanic told me the bearings in the engine were screwed and that the pistons were hitting the head
The pistons aren't hitting the head. but the rod bearings are probably shot, yes you can just replace the bearings in most cases and just run it like that.
08-30-2004, 10:26 AM
#28
I suppose he could take the crank out from the bottom and replace the main journal bearings. Not exactly an easy job though.
Originally Posted by internetautomar
A: he's half right, and you need to find another mechanic.
The pistons aren't hitting the head. but the rod bearings are probably shot, yes you can just replace the bearings in most cases and just run it like that.
The pistons aren't hitting the head. but the rod bearings are probably shot, yes you can just replace the bearings in most cases and just run it like that.
12-04-2004, 04:54 PM
#32
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Join Date: Aug 2004
Posts: 24
been a while since i posted but i thought i should update. i got the swap done. engine doesnt knock but still is crap. another mechanic told me my fuel injector is dead. saying its dumping too much gas into my cat so my cat is on fire. is it true that my car can go up in flames?
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