92 Accord timing belt question
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Hi guys, I'm new to this forum but unfortunately my first post is a plea for help. I have an 92 with a broken Timing belt. What are the chances that the valves are bent? I know it's an interference engine. Has anyone put one back together after a broken timing belt with luck?
Thanks
Thanks
I've seen them NOT bend valves.....rarely LOL.
You can check for bent valves; before installing a new T-belt
Remove all spark plugs, chop off the old T-belt.
Turn the crank pulley 90 degrees from TDC; pistons 1/2 way up.
Now you can turn the cam without interference.
Whenthe cam lobes / intake-exhaust are pointing at 4 Oclock and 7 Oclock that cylinder is ready to test. Rotating the cam90 degrees at a time will change each cylinder to closed valves
Use a close fitting rubber hose into the spark plug hole and 'manually' blow in a big lung full of air. You will be able to tell if there is backpressure on the hose, this is good.
If you get to a cylinder with no back pressure.....taaa daaa bent valve.
And contrary to popular belief you, can pull the head and replace the valve.
Bent valve does not automaticlly mean complete engine replacement.
You can check for bent valves; before installing a new T-belt
Remove all spark plugs, chop off the old T-belt.
Turn the crank pulley 90 degrees from TDC; pistons 1/2 way up.
Now you can turn the cam without interference.
Whenthe cam lobes / intake-exhaust are pointing at 4 Oclock and 7 Oclock that cylinder is ready to test. Rotating the cam90 degrees at a time will change each cylinder to closed valves
Use a close fitting rubber hose into the spark plug hole and 'manually' blow in a big lung full of air. You will be able to tell if there is backpressure on the hose, this is good.
If you get to a cylinder with no back pressure.....taaa daaa bent valve.
And contrary to popular belief you, can pull the head and replace the valve.
Bent valve does not automaticlly mean complete engine replacement.
Good test, but dont try to improve it by using an air compressor.
If you blow enough air into that cylinder, you push that piston down & spin the crankshaft. Then you might get one of the other pistons to hit the valves during the test.
If you blow enough air into that cylinder, you push that piston down & spin the crankshaft. Then you might get one of the other pistons to hit the valves during the test.
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5.0stang
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Apr 23, 2013 06:37 PM




