Pretty sure I threw a rod... video included.

GODofWARREN · Apr 10, 2013

So yesterday I was on my way to work, and was pulling onto the highway and got to 3rd gear and just barely hit boost to get to highway speed, and the entire care jerks and starts shuddering, zero acceleration, car is shuddering and shaking, couple backfire pops from the exhaust too. When I got to work, I parked the car but left it running, popped the hood and heard knocking, pulled the spark plug closest to the timing cover ( I believe thats number 4?) and the kknocking stopped. Im fairly certain I threw a rod, just want some to confirm so i can start this tear down

Here the link to the video-http://www.youtube.com/watch?v=RwHm5ZrI5aQ&feature=youtu.be

side note, at around 30 secs into the video it sounds like the bov is stuck open...? Any ideas on that?

TofastForU_99 · Apr 10, 2013

Definitely sounds like a spun rod bearing, sorry to say

What are you going to do now?

GODofWARREN · Apr 10, 2013

Start tearring her apart unfortunately

i have another awd tsi i was using as parts so im thinking i can frankenstein the 2 motors together

thereef · Apr 10, 2013

Good luck dude! :>

Afizzle · Apr 11, 2013

may the DSM gods be with you.

project98dsm · Apr 11, 2013

Yea sounds more like a spun rod bearing than rod knock. Does it get more loud/noticeable after the motor has warmed up? Also, cylinder closest to timing cover is #1...for future reference

Breezio69 · Apr 11, 2013

Have you pulled the valve cover? Ive had a stuck lifter in a car (not eclipse) sound exactly like that, and it ran like crap as well.

Not negating whats been previously said about a bearing, its just something to look into before you tear into it completely. It sounds like its an "upper" end knock than a lower end to me... but of course its over video and not in person

curt-s · Apr 11, 2013

The sound is similar to either an issue with a single lifter or the beginning of rod knock, though rod knock is usually lower frequency sound (if we can trust the camera's audio recording capabilities).

However, I'm scratching my head trying to figure out how the events that transpired contributed to rod knock.

I wonder if the valve keepers let go or otherwise caused a valve to hit the piston. An open intake valve at the wrong time would affect performance, and the process in which it's buggered also can contribute to the sound you're hearing now.

Can you hear the sound even louder from the oil pan area, using a real or screwdriver stethoscope?

GODofWARREN · Apr 12, 2013

So I was messing with it today and the noise does seem to be coming from the head behind cylinder 1..? and when I pull cylnder 1 the knock goes away. Wondering if this could mean bad injector or something like that?

race_me89 · Apr 12, 2013

I would pull the valve cover off and just look and see if everything looks uniform.
I can't tell you what to look for exactly cause any number of things can go wrong
A rocker bearing could go bad, a lifter could have just froze.
If everything looks good I would see if you can spin the motor by hand and watch to see if something don't operate as it should

Oh and check that plug and wire on cylnder 1 the long tube part of the wire could have an issue

Firsts tuner · Apr 13, 2013

Usually if you remove combustion and the noise goes away then you have spun the bearing on that cylinder. The lack of combustion isn't forcing the rod down so therefore it dosent collide with the crank and give you the knock sound. Sorry if that makes little to no sense( long day)

Breezio69 · Apr 13, 2013

Firsts tuner said:
Usually if you remove combustion and the noise goes away then you have spun the bearing on that cylinder. The lack of combustion isn't forcing the rod down so therefore it dosent collide with the crank and give you the knock sound. Sorry if that makes little to no sense( long day)

What he said, if it were a lifter or something head related youd still hear it every time the cam lobe came around. Stop running it and drop the pan. Maybe its soon enough that nothing is marred up and you can just replace the bearing?

DSM1491 · Apr 14, 2013

Yea best way to find out is to pull the oil pan. Check for metal shavings and feel the rods and the crank for any play. Take the rod bolts off and check how it is. You'll see if anything is wrong.

GSXPimp · Apr 14, 2013

Drop the pan and let us know what you see

The Top DSM Community on the Web

Pretty sure I threw a rod... video included.

GODofWARREN

TofastForU_99

GODofWARREN

thereef

Afizzle

project98dsm

Breezio69

curt-s

GODofWARREN

race_me89

Firsts tuner

Breezio69

DSM1491

GSXPimp

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