Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

did I bend a valve?

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Old Sep 22, 2011 | 05:46 PM
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Jonathang's Avatar
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Default did I bend a valve?

Okay, so I broke a timing belt going 60mph in the rain. When I tried pushing the gas pedal it was acting like a break. It's a 1995 accord.

What I heard was that it would take a miracle not to have bent a valve. Well, there was a lot of people praying for just such a miracle. When we took the stuff off in order to replace the timing belt we checked the rocker arms and the intake valve tops and went around twice to see if any were loose and none of them were. My father believes this means that nothing was bent. Can it still be bent but not affect any of the rocker arms or intake valve tops?

We don't have a compressor gauge that's long enough to fit so we can't check the compression. :-/
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Old Sep 22, 2011 | 07:04 PM
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Default Re: did I bend a valve?

Yeah, you can check the valves by inspecting the rocker arms. Otherwise, a compression tester kit will be your best bet.
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Old Sep 22, 2011 | 07:06 PM
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Default Re: did I bend a valve?

Did you measure the valve clearances on both the intake and exhaust valves?
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Old Sep 22, 2011 | 08:58 PM
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Default Re: did I bend a valve?

Originally Posted by GhostAccord
Did you measure the valve clearances on both the intake and exhaust valves?
How do you do that?
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Old Sep 22, 2011 | 08:59 PM
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Default Re: did I bend a valve?

I snapped a belt and jumped 5 teeth on my h22, and both times never bent a valve. I still pray to god and thank him for that...
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Old Sep 23, 2011 | 07:33 AM
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Default Re: did I bend a valve?

I figured where you said none of the rockers were loose that you checked them with a feeler gauge. The rockers should be a bit loose when the piston is at TDC for that cylinder. You need to check the valve clearance with a set of feeler gauges. A Honda manual would be helpful if you have never done this before.

PM sent
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Old Sep 23, 2011 | 09:07 AM
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Default Re: did I bend a valve?

Thanks, Ghost! If the rockers aren't at the right valve clearance does that indicate that a valve is bent?
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Old Sep 23, 2011 | 09:28 AM
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Default Re: did I bend a valve?

if the valve is bent on the compression stroke the valve will not return to the seated position. So the valve lash will be excessive. The problem with this method is that if the valve is just slightly bent its very difficult to determine. I would just slap a new timing belt on it and perform a compression test.
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Old Sep 23, 2011 | 09:50 AM
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Default Re: did I bend a valve?

The compressor gauge we have isn't long enough to go down into it. Any ideas on how to make it work?
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Old Sep 23, 2011 | 10:17 AM
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Default Re: did I bend a valve?

There probably is a special tool available to extend the compression gage hose. Maybe NAPA or Snap on will have one? You might be able to rent one from an auto parts place.
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Old Sep 23, 2011 | 03:45 PM
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Default Re: did I bend a valve?

Originally Posted by Jonathang
Thanks, Ghost! If the rockers aren't at the right valve clearance does that indicate that a valve is bent?
No, not neccesarily. Honda's have a solid valve train that requires occasional adjustment. If the car starts getting clickity diesel sort of sound the valves might be do for an adjustment. Loose is better than to tight though.
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Old Sep 24, 2011 | 04:30 AM
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Default Re: did I bend a valve?

Originally Posted by Jonathang
Thanks, Ghost! If the rockers aren't at the right valve clearance does that indicate that a valve is bent?
Not always, but if you find one or two that are way off it could be a good sign to have them checked out further. Probably faster and more reliable to buy an adapter for your pressure tester.
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