350Z engine strong knocking sound after revving
#1
Registered User
Thread Starter
350Z engine strong knocking sound after revving
Hi, I know I screwed up, but after revving very high after a cold start.
My engine started a strong knocking sound, it almost sounds like something fell off in a cylinder and is knocking the cylinder itself.
Here is a youtube link:
The noise goes up in frequency with rev, the idle rpm is still very stable, but the throttle response seems very very slow, and the car is clearly slower than normal.
Also, I had a grinding 3rd gear, but I do know if transmission is the problem here.
Please give me some thoughts,
Thank you very much!
My engine started a strong knocking sound, it almost sounds like something fell off in a cylinder and is knocking the cylinder itself.
Here is a youtube link:
The noise goes up in frequency with rev, the idle rpm is still very stable, but the throttle response seems very very slow, and the car is clearly slower than normal.
Also, I had a grinding 3rd gear, but I do know if transmission is the problem here.
Please give me some thoughts,
Thank you very much!
#4
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Motor is trashed
#5
Registered User
do a compression test.
report to us the compression readings.
drain the oil and remove the oil pan check for metal shavings.
then go from that information.
its hard to diagnose a car just by sound can be plenty of symptoms dont jump the gun until you get concrete facts.
report to us the compression readings.
drain the oil and remove the oil pan check for metal shavings.
then go from that information.
its hard to diagnose a car just by sound can be plenty of symptoms dont jump the gun until you get concrete facts.
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#7
Registered User
@Tcode I just cried laughing haha... ugh that was great.
@misaka "after revving very high after a cold start." this is like saying "after having sex with that prostitute I got aids." cold starting a car and reving it up is begging to throw something.
@misaka "after revving very high after a cold start." this is like saying "after having sex with that prostitute I got aids." cold starting a car and reving it up is begging to throw something.
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tcode (04-26-2016)
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StarkdrivenZ33 (04-26-2016)
#10
Registered User
So you high revved your car cold, how bout somebody shakes you from a deep sleep then you run a marathon. Doesnt sound like that would be fair way to treat you does it?
#12
Registered User
the sound hes experiencing was something "kind of similiar" except mines was deeper sounding from the exhaust during the break in period of my engine. it turned out to be piston slap though not really a big deal only happened during cold startup and once the car got warm my sound went away.
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TeamZleep (04-28-2016)
#16
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