Toyspeed.org.nz Message Board

by **Timoz** » Thu Jul 05, 2007 7:26 pm

Hello Everyone does anyone know wat are the causes of knocking of blacktops if the big end bearings are fine?

This is happening to my car now and i'm worried abt it. Any suggestion will be fine

by **AceSniper** » Thu Jul 05, 2007 7:42 pm

engine mounts?

Website · by **Bling** » Thu Jul 05, 2007 8:23 pm

suspension bushes

by **Timoz** » Thu Jul 05, 2007 8:58 pm

The knocking noise is coming from the engine, as the revs go up it speeds up and get noiser, when the revs come down the noise slows down and dun get as loud.

by **Mr Revhead** » Thu Jul 05, 2007 9:03 pm

is it constant?
does it keep pace with engine speed?

by **matt dunn** » Thu Jul 05, 2007 9:06 pm

Timoz wrote:Hello Everyone does anyone know wat are the causes of knocking of blacktops if the big end bearings are fine?

This is happening to my car now and i'm worried abt it. Any suggestion will be fine

How do you know the bearings are fine.

by **Timoz** » Thu Jul 05, 2007 9:53 pm

yes the noise is constant, and it keeps pace with the engine speed, i took my car to the mechanic and he's very sure it's not the noise of the big end bearings as he said it would be much louder if i ran a bearing

by **Mr Revhead** » Thu Jul 05, 2007 9:55 pm

where are you?

by **Timoz** » Thu Jul 05, 2007 9:56 pm

Auckland and i wanna find a workshop that have experts for blacktops to check it out

by **Mr Revhead** » Thu Jul 05, 2007 10:05 pm

any mech should be able to pick run bearings easily.

there is other possbilitys, such as belt noise, belt idler/alternator bearings, though they tend to be more of a rattle.
hard to diagnose a noise when you cant hear it...

did the mechanic offer any suggestions as to what it is?

by your description it sounds like bearings.... and i still think bearings...

by **Ae92typeX** » Thu Jul 05, 2007 10:05 pm

Timoz wrote:yes the noise is constant, and it keeps pace with the engine speed, i took my car to the mechanic and he's very sure it's not the noise of the big end bearings as he said it would be much louder if i ran a bearing

...and he didnt suggest what it may be???

by **Timoz** » Thu Jul 05, 2007 10:06 pm

no he didn't :cry:

by **Timoz** » Thu Jul 05, 2007 10:09 pm

hey Mr Revhead if i need to replace the bearings how much would be the genuine ones and approximately how much approximately for the labour?

by **Ae92typeX** » Thu Jul 05, 2007 10:09 pm

go ask another mechanic then. As Rev says, any mechanic should be able to at least take a educated guess, no need for a 'blacktop specalist'.
Dont reallylike to say, but he may have thought it ws a bearing and couldt be arsed with it so sent you packing. Hopefully not the case, but it can happen...

by **Timoz** » Thu Jul 05, 2007 10:29 pm

i'll take it to toyota tomorrow or the day after to have a check and see what they suggest abt this noise, hope it's not the bearings

by **rolla_fxgt** » Thu Jul 05, 2007 11:16 pm

Try some of that belt spray stuff that makes them run quiter. It makes diagnosing where the sound is coming from way easier.
If you have no idea where the noise is coming from apart from the engine, i think any mechanic will start at the top or bottom of the engine & work to the other end to find whats wrong which might cost u big bucks, when u could know where the noise is & go here's where the noise is, find what it is & tell me what it takes/costs to fix it.

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