two problems

[lawson706]

after ive been giving the valver some grief
i get a loud knocking noise from under the
car towards the back (i think) it happens mostly
after iv changed gears and taking me foot of the
clutch and in say fourth accelerating at low revs,
ive got a magnex full system on (first thought eshaust knocking)
and the back box is a tight fit in the back bumber
where the holes been cut for it, but surely if it was
the exhaust it would do it all the time but it doesnt.
im a bit clueless so would appreciate some help
2nd problem

been sent on a mission to solve a problem so hope you can help,
a friend of mine has a l reg 1.2 clio he was racing a v reg 1.2
16v which he beat (i know that doesnt need to be included but hey)
anywho he pulled overand his engine was making strange noises as
he would describe like a helicopter (i wasnt there/) and that
his spark plug popped out and wouldnt go back in just get
popping out, and his cambelt was ticking, so was wondering
if anyone got a clue what h could of done, i know its a poor
description but its what i was told cheers.


i know ive put both these in the mechanical section but i got no replies so could you mod's leave it here please

 

[edde]

Your mates car sounds like he's bust the head a helicoil should be able to fix it.

SOunds like the ehauxt mounting isn't working you need to get right under there and have a look the dogbone might also be at fault.

 

[lawson706]

one of the exhaust rubbers is a mangled but thats towards the middle of the car and the noise sounds like its coming from the back, could it be causing it to vibrate through nd knock on the back bumber?

 

[black kro]

knocking is only mounts - should just need a jiggle or new mount

 

[lawson706]

were will this mount be located and will it phsyically looked broke?

 

[lawson706]

bump ive got the car up now so really aprreciate it if anybody knows what to look at