So I had the infamous TCT problem, swapped it with a new one (I know should have got a billman) that fixed my warm engine sound but then I had another sound that would get louder when revving passed 2500RPM. Mind you the car was dead silent below that and idling.

I searched around and figured it was a valve adjustment, went ahead and did one (my first time, but I triple checked clearance) and now it sounds like so:

[media]http://www.youtube.com/watch?v=0C6crNaU64I[/media]

It sounds much worse from a cold start but this is me warming it up before resetting the ECU (after valve adjustment). It also died after I gave it a little throttle.

What does it sound like? I've already come to terms with the fact I might need a new engine but I figured maybe I can salvage this one or maybe I just did my TCT swap/valve adjustment wrong.

Thanks ahead.

 

Sounds like the top of a piston hitting a valve. If so, its more then likely related to your adjustment. Almost positive it is if you noticed that sound only right after adjustment. Run a scope/cam down into the spark plug hole to look for damage/contact marks on top off piston in one of the cylinders for confirmation.

 

There was a similar clatter before the adjustment but only above 2500 RPM. It only started a day before I swapped the TCT which I had unknowingly been driving on for a while.

This video is of the car idling at around 1000 RPM. When I give it throttle for a second at around 0:18 you can hear the clatter increase in noise/speed with RPM before dying.

I'll give what you said a shot, thanks for the response.

 

sounds so painful...good luck my friend

 

Have you checked your retainers at all? Maybe you did an adjustment on a valve that has almost pulled itself through the retainer which is causing piston/valve contact, especially after a valve adjustment. Chances are your tappets are contacting the retainer rather than the top of the valve stem. Pull the VC and post up pics of all of your intake retainers. If you can, pull the cams so you can swing the rockers away to get good pictures/view of the valve stems/retainers.

 

I would NOT start this car again until you find what this is!!!!! I think you got lucky so far... take valve cover off like others said and find out whats going on.

 

Everything inside looked fine, as-in nothing seemed broken or damaged but I've no experience with engines so I might have overlooked something. I'll try to get some pics up later today.

I figured as much, I haven't driven it since. Not taking any chances in case I can save it.

 

Did it stall out after revving it?

 

In the video yes, but that's never been a problem before this noise started.

 

Definitely sounds like valve slap to me. Running it again risks breaking the valve stem and the valve dropping into the cylinder head so as already said, do not start it again until you've looked at the problem properly.

Taking the rocker cover off wont show you anything visually I wouldn't have thought. My other concern would be if you sort the problem out and it is a retainer there is no way of telling whether the valve stem will have any fractures in it and if it does, again it's only a matter of time until it drops off, probably under high revs that'll cause your engine to go boom.

I hope you get it sorted