I think my engine is going to have a serious problem :(
#1
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I think my engine is going to have a serious problem :(
I don't know what's going on but within the last few days a knocking noise has been coming from my front cylinder bank. The noise sounds like something is loose in my valvetrain. The sound is more like a light knocking sound than a tapping sound. When I was pinpointing where the sound is coming from, it sounded like the noise is coming from behind the front bank, in front of the manifold. When revving the engine, the sound speeds up.
The car is not throwing one code or running bad at all. I'm thinking maybe the valves need to be adjusted? I know they haven't been adjusted at all but should have been done about 20K miles back.
I'm thinking, "Great! Now I'm ready to install all of my mods, the engine is going to start acting up."
I made an appointment with the dealership to help diagnose the problem.
The car has 116000 miles on it.
The car is not throwing one code or running bad at all. I'm thinking maybe the valves need to be adjusted? I know they haven't been adjusted at all but should have been done about 20K miles back.
I'm thinking, "Great! Now I'm ready to install all of my mods, the engine is going to start acting up."
I made an appointment with the dealership to help diagnose the problem.
The car has 116000 miles on it.
#4
Re: I think my engine is going to have a serious problem :(
Originally posted by deezo
I don't know what's going on but within the last few days a knocking noise has been coming from my front cylinder bank. The noise sounds like something is loose in my valvetrain. The sound is more like a light knocking sound than a tapping sound. When I was pinpointing where the sound is coming from, it sounded like the noise is coming from behind the front bank, in front of the manifold. When revving the engine, the sound speeds up.
I don't know what's going on but within the last few days a knocking noise has been coming from my front cylinder bank. The noise sounds like something is loose in my valvetrain. The sound is more like a light knocking sound than a tapping sound. When I was pinpointing where the sound is coming from, it sounded like the noise is coming from behind the front bank, in front of the manifold. When revving the engine, the sound speeds up.
#6
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Re: Re: I think my engine is going to have a serious problem :(
Originally posted by Stephen Max
A light knocking sound that increases with engine rpm can be worn connecting rod journal bearings or a worn wristpin bushing. Your mileage is awfully low for that to be happening now, though, unless you haven't been changing your oil regularly or the engine has overheated.
A light knocking sound that increases with engine rpm can be worn connecting rod journal bearings or a worn wristpin bushing. Your mileage is awfully low for that to be happening now, though, unless you haven't been changing your oil regularly or the engine has overheated.
#7
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UPDATE!!!
Problem is found but not solved.
First let me say if you don't have a stethoscope, buy one.
When scoping out the noise this is what I found:
Valvetrain = OK
Crankcase = OK
OEM Y-pipe connections = OK
Then I scope out the pullies and alternator
,
It's a 1 year old alternator from a local auto parts store giving me the knocking issue. It sounds like the armature is bouncing around inside its housing. For now on, I'm going with OEM parts for the engine.
First let me say if you don't have a stethoscope, buy one.
When scoping out the noise this is what I found:
Valvetrain = OK
Crankcase = OK
OEM Y-pipe connections = OK
Then I scope out the pullies and alternator
![Mad](https://maxima.org/forums/images/smilies/mad.gif)
It's a 1 year old alternator from a local auto parts store giving me the knocking issue. It sounds like the armature is bouncing around inside its housing. For now on, I'm going with OEM parts for the engine.
![Mad](https://maxima.org/forums/images/smilies/mad.gif)
#8
Re: UPDATE!!!
*PHEW* At least its not a major engine problem! Be glad its just the stupid alternator. At least yours didn't burst in to flames... yet.. heheh =P
ZuM
ZuM
Originally posted by deezo
Problem is found but not solved.
First let me say if you don't have a stethoscope, buy one.
When scoping out the noise this is what I found:
Valvetrain = OK
Crankcase = OK
OEM Y-pipe connections = OK
Then I scope out the pullies and alternator
,
It's a 1 year old alternator from a local auto parts store giving me the knocking issue. It sounds like the armature is bouncing around inside its housing. For now on, I'm going with OEM parts for the engine.
Problem is found but not solved.
First let me say if you don't have a stethoscope, buy one.
When scoping out the noise this is what I found:
Valvetrain = OK
Crankcase = OK
OEM Y-pipe connections = OK
Then I scope out the pullies and alternator
![Mad](https://maxima.org/forums/images/smilies/mad.gif)
It's a 1 year old alternator from a local auto parts store giving me the knocking issue. It sounds like the armature is bouncing around inside its housing. For now on, I'm going with OEM parts for the engine.
![Mad](https://maxima.org/forums/images/smilies/mad.gif)
#9
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Re: Re: UPDATE!!!
Originally posted by ZuMBLe
*PHEW* At least its not a major engine problem! Be glad its just the stupid alternator. At least yours didn't burst in to flames... yet.. heheh =P
ZuM
*PHEW* At least its not a major engine problem! Be glad its just the stupid alternator. At least yours didn't burst in to flames... yet.. heheh =P
ZuM
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
#11
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Originally posted by dwapenyi
This is one of those rare times that you actually feel god about an ALT going bad
I'd be a helluva releived too![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
DW
This is one of those rare times that you actually feel god about an ALT going bad
![laugh](https://maxima.org/forums/images/smilies/laugh.gif)
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
DW
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
#12
Originally posted by dwapenyi
This is one of those rare times that you actually feel god about an ALT going bad
I'd be a helluva releived too![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
DW
This is one of those rare times that you actually feel god about an ALT going bad
![laugh](https://maxima.org/forums/images/smilies/laugh.gif)
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
DW
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
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