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Old Yesterday, 02:45 PM   #16
Sharky
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OP: If you did manage to slightly bend a valve when you turned the crank, and that valve is what's making the noise, I wouldn't run the engine any more than you absolutely have to. A bent valve means the metal has yielded and is now weaker than it used to be. And repeated opening and closing may then further weekend it to the point where the valve head falls off the valve stem. If that happens, you then destroy your cylinder head, the piston, and possibly the block by gouging the cylinder walls. Better to have it towed to a pro and have them fix it.
If the compression is good, doubt a valve is bent.
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Old Yesterday, 04:44 PM   #17
SpeedyCorky
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whatever is bent or wrong, is very, very slight. i'd think it would be hard to detect with a compression check alone. i'm going to have a leak down test done tomorrow.


it should be said that I brought the car to Honda, and they agreed the noise was not normal.
I told them to inspect the head (rather than the timing belt area), and adjust the valves. they were unable to diagnose the cause of the noise, but agree the symptom is for sure the tensioner clicking on the tensioner pully. they of course want to blame the aftermarket parts i have in there (at the time, just the water pump and idler pulley), and recommended a $1400 timing belt job w/ all new Honda parts... yeah pretty much what i expected their response to be. in the next few days i'm going to swap back in ALL the original parts, down to the original belt - and i FULLY expect the noise to still be there. so its head related, but WHAT is the question, and i'm not even convinced its a valve. that would be 'too easy' for my bullshit world

I think whatever is bent in the head, is so slight, that its not going to be detectable. sure, if its the valves, then all new valves and such would fix it - but what if its something else in the head? I feel full head replacement is the only way to be sure and not throw more time and money into the trash
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Last edited by SpeedyCorky; Yesterday at 04:46 PM..
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Old Yesterday, 09:21 PM   #18
Sharky
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Originally Posted by SpeedyCorky View Post
whatever is bent or wrong, is very, very slight. i'd think it would be hard to detect with a compression check alone. i'm going to have a leak down test done tomorrow.


it should be said that I brought the car to Honda, and they agreed the noise was not normal.
I told them to inspect the head (rather than the timing belt area), and adjust the valves. they were unable to diagnose the cause of the noise, but agree the symptom is for sure the tensioner clicking on the tensioner pully. they of course want to blame the aftermarket parts i have in there (at the time, just the water pump and idler pulley), and recommended a $1400 timing belt job w/ all new Honda parts... yeah pretty much what i expected their response to be. in the next few days i'm going to swap back in ALL the original parts, down to the original belt - and i FULLY expect the noise to still be there. so its head related, but WHAT is the question, and i'm not even convinced its a valve. that would be 'too easy' for my bullshit world

I think whatever is bent in the head, is so slight, that its not going to be detectable. sure, if its the valves, then all new valves and such would fix it - but what if its something else in the head? I feel full head replacement is the only way to be sure and not throw more time and money into the trash
Internet diagnosis is tough, but I think you are panicking a little soon. If the compression is good, i canít believe itís a bent valve. Double check the timing and replace the tensioner if the timing checks out. While you have the tension off the belt, spin the water pump to make sure it is t binding or possibly have a bearing problem. Tighten up and try again. Throwing parts at is, especially a new head before accurately diagnosis, is a great way to throw away $$$.
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Old Today, 05:48 AM   #19
SpeedyCorky
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been there done that. 4 times now swapping out various parts. Noise still present. water pump only thing i havent swapped and it feels GREAT
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Don't worry about the whiners. This is teh BARF.
* The race is long, and in the end - it's only with yourself.
* In real life, the tortoise gets smoked.

Gary J Cygnus Lloyd
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