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Bad engine noise, any ideas?


Matty_P

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Thanks for the responses. I have changed the two belts a couple of weeks ago.

Took it to a garage and he seems to think its bottom end. So I'm guessing a big end or small end bearing?

Does anyone know a specialist I can take the car to in the kent area, hopefully near ashford way?

 

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sly at kaizer is near rochester, often recommended on these forums so i've picked him as my main garage. so far he's been very helpful and very reasonable on the price too. he's closer to you than he is to me!

 

he's a nissan master mechanic, and has been in the top 30 master mechanics across the UK twice now over the years. mostly tends to GTRs, 370s and 350s.

 

i'd just be worried about driving your car with those sounds. does anyone know if it's likely to be doing more damage if driven in this state?

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That sounds like bearing mate driving it like that you run the risk of it seizing up and that can put a hole in the block (ask Grundy)

 

You may find a second hand engine is a better way forwards though.

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I would say it's picked up on a bottom end shell bearing. I had a car in last week exactly the same sound. The noise from the white metal bearing shell as it has detaxched gets transferred up the rod and through the piston crown and sounds very loud inside the rocker cover. This particular car was a ford 1.8 Duratec engine and it was big end number one but sounded like exhaust valve number one.

Bigendbearing1_zpsmlijnsl3.jpg

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I couldn't actually post the whole video as it's only allowing 1MB, but with slight rev the knocking gets louder and faster, then a bit more and the noise cuts out a bit.

Strangely after that the knocking noise has gone now (obviously haven't driven it) so I'm unsure whats going on?

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