valve job...

[LyvvRacingCB7]

hi my cousin bought a 92 honda accord and when he brought it to me the engine was making a knocking noise so i think it could be a bent valve and i would like to know is it worth it to fix it or get a new engine drop in? or is there anyway i can test if its a valve or piston job without taking the head out?
thanks

[bobbycos]

is the knocking sound coming from the top of the engine or the bottom?

find a friend who is well versed in mechanics to listen to it.

you might be better off getting a good running used engine before tearing into this engine a finding alot more wrong with it.

[4GAccordH22]

Have you tried a valve adjustment? If it's a ticking sound that you are hearing, this could very well be the issue. If it is an actual knocking sound, that's usually the bottom end...

[turboAccordHSF]

First try taking the valve cover off and inspect. The ticking sound is more likely the valves. Either way its an easy fix taking off head should not be hard at all if you know what your doing. Replace the head gasket with a new one though!

If its bottom knocking sound.........you are in for a surprise

[Kennie-Pak]

To OP, if you do decide to do a value adjustment, make sure to do it when you haven't started the car. Most honda engines need a cold start value adjustment.

[deevergote]

Do a compression test to see if there's damage. A bent valve will result in very low compression in a cylinder.

If a valve was bent (most likely two valves), that means it made contact with the piston, so the piston would be damaged as well. The only way that could happen is if the timing belt snapped, or somehow skipped a tooth or two. Or if the timing was replaced improperly.

Do a compression test.
Do a valve adjustment.

[LyvvRacingCB7]

thx guys ill try those and the sound looks like its coming from the bottom so a buddy is gonna help us do a valve adjust but he was talking about something to do with adjust in a certain way and rpm and stuff is there a chart to tell u the right measurement....thanks

[BLUBB2]

thx guys ill try those and the sound looks like its coming from the bottom so a buddy is gonna help us do a valve adjust but he was talking about something to do with adjust in a certain way and rpm and stuff is there a chart to tell u the right measurement....thanks

Check the manual for specs. If its coming from the bottom end, then a valve adjustment will NOT solve this. Could possilbly be a rod bearing knock or possible spun bearing,although I dont know what a spun bearing sounds like.

[LyvvRacingCB7]

ok guys here is a vid i just took so you guys can have a better look and in the vid the engine looks calm but it is shaking like crazy!!! cold start too so its not idle surging yet but when warmed up it will begin to idle...if you want anything else i will post more...i didnt take the rpm cause i took off the cluster to replace it cause the cel is dead i will post it.... hea is the link to youtube http://www.youtube.com/watch?v=yqwtS6zMih0

[youngflyndsaved]

do u know if any previous head work has been done? like messing with the rocker arm assembly or somethin?

to be honest it kinda sounds like the rocker arms aren't hitting the valve springs properly.

[GhostAccord]

That tick is the sound of an engine requiring a simple valve adjustment, no need to remove the head. Or it could be in desperate need of an oil change. The sound seems to kind of die off as the head gets warm and some more oil gets up into it.