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knocking noise!



Struggler

ClioSport Club Member
  Ph1 track 172
Oh joys,
and knocking noise! were my thoughts on the way to college thismorning!
ill describe the knock!!

it seems to come and go, it doesnt sound like an engine knock, and you can kind of feel it through the pedal!

it does it over sharp bumps, single knock or maybe two knocks,
but it also does it when you let off the power!! (straight away)

go home, and noticed that its really bad when reversing!! so i was reversing back and forth with the bonnet open to see if i could hear anything, didnt seem any louder with the bonnet and windows open!! was clunking rolling down the road (quite bumpy) and clunking on pulling away in reverse!

i finally found that if you rev her (parked) very slightly, it does about 5 knocks in quick sucession(SP) as it returns to idle,

and i hope this makes sence, but i was leaning over, 1 hand on the windscreen, and other on the throttle body giving it a little rev, and you could feel the knocks a lot more through the windscreen than the engine! (though it was obv vibrating on its own so that might be irrelevant)

any ideas??

i dont think its engine as it does it coasting over bumps,
i dont think its suspension because it does it while parked,
and i dont think its gearbox as it does it while parked!!

the only thing i can think of is exhaust is hitting somewhere down the line???

any suggestions?
 
  clio 182
Check your exhaust hangars and see if any of the brackets coming off of the exhaust are close to them. If they are, when the engine rocks forward ie. When in reverse, it will push the exhaust towards the back of the car and might catch. Worth a look
 
sounds identical to the problem i had, could feel it through the pedals when letting off the power but not when braking and accelerating, turns out both my front wheels had been loosened by someone and only my locking wheel bolts were holding them on, worth checking as i was going to take it to a garage as i thought this was too obvious
 

Struggler

ClioSport Club Member
  Ph1 track 172
wont be until tomorrow i have a chance to have a look now!
but i shall have a long butchers!
 

Struggler

ClioSport Club Member
  Ph1 track 172
sounds identical to the problem i had, could feel it through the pedals when letting off the power but not when braking and accelerating, turns out both my front wheels had been loosened by someone and only my locking wheel bolts were holding them on, worth checking as i was going to take it to a garage as i thought this was too obvious

were this the case, surely it wouldnt be present while reving the car stationary!
ill have a check before i next drive it either way!
 
were this the case, surely it wouldnt be present while reving the car stationary!
ill have a check before i next drive it either way!

oh sorry, sorry i didnt read that bit, worth a look anyway, i thought i had a serious problem, turned out to be something simple, hope this is the case for you too
 


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