What a Bad DAY
Thread Starter
Intermediate
Joined: Feb 2009
Posts: 25
Likes: 0
What a Bad DAY
SO I finally pulled out the corvette from storage today.. Brought it into my garage and replaced the radiator as it was leaking. Which wasnt as bad as I thought it was going to be..
anyways I had a neighbor come over to help me put the hood back on and he asked me if the car was always racing and never idling correctly. I told him yes and he pulled off a hose and then pluged the nipple on the carberator. When he did that the engine calmed right down and idled I thought it was going to be a great thing.... then I heard it.. YUP and knocking in the lower part of the engine.. I think a rod got screwed up or something...
NOW I NEED TO REPLACE THE ENGINE.. I was all excited about driving the car tomorow to work.. that isnt happening now.. DAMMMMMM
Just had to vent..
anyways I had a neighbor come over to help me put the hood back on and he asked me if the car was always racing and never idling correctly. I told him yes and he pulled off a hose and then pluged the nipple on the carberator. When he did that the engine calmed right down and idled I thought it was going to be a great thing.... then I heard it.. YUP and knocking in the lower part of the engine.. I think a rod got screwed up or something...
NOW I NEED TO REPLACE THE ENGINE.. I was all excited about driving the car tomorow to work.. that isnt happening now.. DAMMMMMM
Just had to vent..
Drifting
Joined: Apr 2008
Posts: 1,565
Likes: 2
From: Sparta Mo.
Pull the pan and try to move the rods one by one against the crank. You can feel a loose one even if it only has .005-.010 extra play. With oil on the crank, they shouldn't move at all side to side. They Will slide a little back and forth on the crank. Let it run a little bit. If the knock goes away after it warms up, it could be a wrist pin. If it does go away when it's warm, drive it. They can go like that for years. If it's a rod or main bearing, fix it right now!
Good luck, keep us posted.
Good luck, keep us posted.
Melting Slicks
Joined: Apr 1999
Posts: 2,521
Likes: 4
From: Windham, NH
I have also heard a knocking sound simular to a rod knock that was caused by a bad fuel pump. The pump produced sufficent pressure & volume for the car to run perfect but there was a broken spring inside it that caused the lever to slap the fuel pump push rod and made a sound VERY simular to a rod knock. It might be worth an hour of your time & $30 bucks or so for a new pump to eliminate it as a possiabulaty.
Jim
Jim
Drifting
Joined: Nov 2003
Posts: 1,874
Likes: 7
From: l In
You could have knocked off a piece of carbon on one of the pistons and that is what you are hearing. If a piece of carbon is forced loose at start up and wedges sideways it will sound like a rod knocking. Only cure is to run it out the valve and you will be good to go.
Just my $ .02 worth
Just my $ .02 worth
Racer
Joined: Mar 2005
Posts: 487
Likes: 0
From: Jacksonville FL
you can also test for a bad bearing by tapping on the rod caps with a metal rod. good ones sound fairly solid while bad ones will sound hollow.
good luck and i hope it's not a rod bearing. i wasn't so lucky...
good luck and i hope it's not a rod bearing. i wasn't so lucky...
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You could have knocked off a piece of carbon on one of the pistons and that is what you are hearing. If a piece of carbon is forced loose at start up and wedges sideways it will sound like a rod knocking. Only cure is to run it out the valve and you will be good to go.
Just my $ .02 worth
Just my $ .02 worth
..
Thread Starter
Intermediate
Joined: Feb 2009
Posts: 25
Likes: 0
I brought it to a shop around here and he said that he doesnt think that it is a rod.. He also doesnt think that its the fuel pump.. He however has no clue what it is though.. Im just gonna drive it.. if it goes ill replace the motor with a 383 stroker that i know of for sale..
Hope everyone has a great weekend..
Greg
Hope everyone has a great weekend..
Greg
