Knocking noise

lukel95

Known Member

lukel95

Known Member
Dec 6, 2016
75
0
6
25
GB birmigham
Hi I have a knocking noise when driving over bumpy round or small speed ramps, the knocking noise also happens when the car is on axle stands driving it in the air

Any help or ideas will be thankful

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sanekit

1,500 RPM

sanekit

1,500 RPM
Dec 9, 2015
1,611
156
163
Petaling Jaya
Hi I have a knocking noise when driving over bumpy round or small speed ramps, the knocking noise also happens when the car is on axle stands driving it in the air

Any help or ideas will be thankful

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what car ya? knocking like sound can be stabiliser link, or other mounts. :driver:
 

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
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May 11, 2010
29,589
8,263
1,713
Petaling Jaya
Hi I have a knocking noise when driving over bumpy round or small speed ramps, the knocking noise also happens when the car is on axle stands driving it in the air

Any help or ideas will be thankful

Sent from my SM-G935F using Tapatalk
Knocking sound, Quite hard to say without physically hearing and check them out....:smokin:
 

gunnerzz

1,500 RPM

gunnerzz

1,500 RPM
Jul 3, 2014
1,917
614
713
35
Melaka
looks like a worn driveshaft problem.
while its on the jackstand u should check all the bush and absorber mount.

my waja have knocking sound from the front,the sound is solid 'tuk2' sound when going through uneven road,strong acceleration,and releasing the throttle when accelerating.
i tot it was the top absorber mount but after checking,confirm its the driveshaft.
 

lukel95

Known Member

lukel95

Known Member
Dec 6, 2016
75
0
6
25
GB birmigham
looks like a worn driveshaft problem.
while its on the jackstand u should check all the bush and absorber mount.

my waja have knocking sound from the front,the sound is solid 'tuk2' sound when going through uneven road,strong acceleration,and releasing the throttle when accelerating.
i tot it was the top absorber mount but after checking,confirm its the driveshaft.
Okay cheers, what sort of wear am I looking for when checking out the absorber mount and bushes? And is there a way of checking wear on drive shaft?

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vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator
May 11, 2010
29,589
8,263
1,713
Petaling Jaya
Okay cheers, what sort of wear am I looking for when checking out the absorber mount and bushes? And is there a way of checking wear on drive shaft?

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I always see my mechanic check bushes by using a long metal rod then like pry in between where the bushes are for free play. Probably he more experience and can see or tell how much free play is considered good or bad.
For me, drive shafts usually will be the CV joint that gives way first. When it start to give you krak, kak sound on full tune when you accelerate, that is the start. It will then become more noisy as it deteriorates. When slight turn also got krak, krak sound time to change....:bawling:
 

lukel95

Known Member

lukel95

Known Member
Dec 6, 2016
75
0
6
25
GB birmigham
I always see my mechanic check bushes by using a long metal rod then like pry in between where the bushes are for free play. Probably he more experience and can see or tell how much free play is considered good or bad.
For me, drive shafts usually will be the CV joint that gives way first. When it start to give you krak, kak sound on full tune when you accelerate, that is the start. It will then become more noisy as it deteriorates. When slight turn also got krak, krak sound time to change....:bawling:
Okay thank you, yeah when the car is on axel stands if I start the car when the wheels first turn on their own it'll make the knocking noise slightly and then if I accelerate it's gradually gets worse

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