Need Help Loud Knock!!

[synistershadows]

ok guys i need help here im getting a loud knock from the front drivers side of the engine i have a video of the knock i dunno what it is and i need to know if it is safe to drive it or just park it till i can get it fixed. the knock goes away when driving at highway speeds.

heres the video

http://s7.photobucket.com/albums/y294/aodei/?action=view&current=19-02-08_1923.flv

[TDIXON]

pull your covers off and check rockers if there ok then i suspect a rod maybe. or check your flywheel also. just a thought

[synistershadows]

looking at the rockers what would i be looking for ?

and also if its a bent rod how much would i be looking at to get a new one in? estimated

[gpse3400]

No rockers on this particular engine..

From what I hear, it seems so loud. Its either the bottom end thats shot or you have a huge exhaust leak.

[93 prix se]

That does kind of sound like an exhaust leak. Kinda LOUD!

[synistershadows]

it sounds like something is bounceing around in the valve cover thought like a metal of some sort i do have aftermarket exhaust on it

[gpse3400]

...pull the cam cover. Very easy, remove the spark plugs and un do the center bolts with an 8mm. The cam thrust plate might e at fault too........ look at the timing belt too.

[synistershadows]

well i took it to my mechanic and he said theres a rod shot and he would have to pull the engine or even replace it

[91DOHC284]

i had a knock like that when i rebuilt the top end on my DOHC but not quite as loud... but it ended up there was two cams upside down!! oops lol

[pocket-rocket]

Last time my car sounded like that was when the 91 had an auto. The thing that fixed it? Tightening the torque converter bolts that my friend didn't tighten completely up when we changed out my first blown 4T60-E.

[Juglenaut]

mines got a impressive exhaust leak and it doesn't sound that loud only seems to knock at WOT range.

[Rabbi]

sounds like my talon did when i blew a rod bearing.

[z34gtp383]

i have a similar knock too, i was told its not the bottom end, it might be.

[crazyd]

That's a bad rod bearing for sure, already been there and done that. Get a crankshaft rebuild kit and it'll come complete with a reman crank and new main and rod bearings for about $250. It's a major job and you'll need to pull the motor, but it's about the most fun to work on. Just don't mix up the rod bearing caps.

[z34gtp383]

engine knock

i pulled to motor out, took it to the machine shop, took it all apart, and found a golfball size hole on top of #3 cylinder. wow, the valve broke in half hitting the piston which caused the hole. and chewed up the head where the valve sat. i will post pics soon,