Knocking noise from engine ( I think) help

Maker Boy · Post by **Maker Boy** » Tue Mar 15, 2005 8:33 pm

hi all im new to this forum so first of all hi to everyone.

I have a Mk2 polo 1.3 cl i have had it bout 2 months now and its a good car but as off last week there has been a knocking noise from within the engine (i think) it is not consistant and some times it goes away it changes some times when revs are appllied does any body have any ideas on wot this could be.
Thanks in Adavnced all

86C · Post by **86C** » Wed Mar 16, 2005 12:48 am

The Polo engines have an inbuilt "rattle" anyway. This is usually much more noticeable when the engine is cold and lessens when it warms up.
Could also be big end bearings. Does it make the noise under load or on light throttle?

Maker Boy · Post by **Maker Boy** » Wed Mar 16, 2005 5:20 pm

hi thanxs the knocking happens all the time no matter load or throttle setting some times it will go away but only for a couple of secs.the engine used to be really quiute

ste mk1lx · Post by **ste mk1lx** » Wed Mar 16, 2005 5:27 pm

a bit of a obvious answer but have you checked the oil level?

Maker Boy · Post by **Maker Boy** » Wed Mar 16, 2005 7:04 pm

yup thats the first thing i did and the oil is fine its going for an oil change and to be cheacked over hope its not to major a job

ill tell u all wot the problem is tomorw

k4lps · Post by **k4lps** » Tue Mar 22, 2005 8:50 pm

could be the center box rattleing happens to mine every time i drive it hard

GroovyCarrot · Post by **GroovyCarrot** » Tue Mar 22, 2005 11:00 pm

Just to be a bit pessimistic, big end / main bearings would be my first thought. How many miles has it done?

polock · Post by **polock** » Tue Mar 22, 2005 11:04 pm

Woah! was just about to put that

Tahrey1043 · Post by **Tahrey1043** » Wed Mar 23, 2005 3:04 am

86C wrote:The Polo engines have an inbuilt "rattle" anyway.

They do?

Never noticed much rattling except for when badly labouring it (for.. um... testing purposes... yeah... that's right... testing... ahem).

Or do you mean the chiahua "growl"?

(damn it sounds loud when i give it a battery-topup idle now!)

take it to a garage and see if you get given that immortal dark-comedy line... "your big ends gone, mate"

GroovyCarrot · Post by **GroovyCarrot** » Wed Mar 23, 2005 3:55 pm

Yeah, they don't tend to have an inbuilt knocking noise.. a bit of clunking is common on very high mileage polos when they're cold, you might get a bit of tappet noise if it's been stood for a long time, and the oil pump will sound like it's on its last legs for the first few seconds from cold, but there shouldn't really be a clunking, knocking noise that stays when it's being driven.