[TruenoRican]

What can be this coming from? It's only when its cold it does this.. then its fine

 

[newbie212]

That doesnt sound too good... I'd get that looked at asap..

 

[toyotaspeed90]

it's hard to say from the poor quality video... if it's as slow as it sounds on the video, then it's not a rod knock....... i initially thought it sounded like a timing belt being partially broken and hitting something....... again, hard to say

 

[big_fella6699]

im not sure but my friends pulsar et turbo started making a noise like that when he bent a conrod

 

[Flashmn]

impossible to diagnose that from a video.

 

[freakinbox]

all I know is it sounded... BAD!!!

 

[Guest]

wow, that sounds horrible have you checked your timing? belt could of slipped a few teeth. also check timing belt tension.

 

[diver9000]

wow, that sounds horrible have you checked your timing? belt could of slipped a few teeth. also check timing belt tension.

I have to think along the same lines. It is hard to tell from the video but it sounds like the timing is off more than a rod knock.

 

[TruenoRican]

Alright, I'll have it checked out... thanks.

 

[Guest]

did you check it out yet?

 

[diver9000]

Good Question.......

 

[epyon22]

just a guess but since it only does it at cold maybe your piston is flappying around in there and it expands when its warm but its just a guess definatly get that checked out

 

[TruenoRican]

No I havent check it out yet, but I'm hoping its nothing with the piston... well I'm planning on getting on another car and working on this car on the side.

 

[twincamallday]

I was reading this, and I was wondering how does piston slaping occur? I have this same problem but soon after I had an overheating problem and fixed it, it started doing this wierd noise... I change the spark plugs cuz the tip was all white from too much heat and change all the wires and it still knocks when its cold... how would I check the timing??

 

[Guest]

to check timing use timing light, or line up engine to TDC (crank shaft pulley lined up with number one pistion in the uppermost rotation of the compression stroke. Keep in mind for every one rotation the block takes the head takes two)

 

[twincamallday]

So if I have piston slapping occuring, I have to rebuild the engine again? I juz rebuilt it and the machine shop put in .20 pistons but not high compression. They came from an auto parts store here. I have read online that serious overheating can cause piston slapping... should I just get another block to rebuild it?