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MerCruiser 5.0 engine

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Gary 2133

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Hello, anybody will know why the intake valve got bended like this? Cylinder 1 with 3 and 2 had no compression. Never been overheated. the gauge never went high.
 

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Gary 2133 said:
Hello, anybody will know why the intake valve got bended like this? Cylinder 1 with 3 and 2 had no compression. Never been overheated. the gauge never went high.
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did all of them bend ? Did they kiss the piston? Hydro lock maybe or rust on the stems from leaking exhaust? likey need to tear them down to find out
 
Gary 2133 said:
no, only cylinder 1 and 3 and 2 has no compression. The rest of them were good. No there was no touching to the piston.
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i mean were all of those cylinders having bent avlaves. Most likely your exhaust is leaking back and rusting the stems but hard to tell with the limited info given. If running lean the valves can tulip and stretch the stem too that might be inferred as bent
 
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