H20doctor Posted July 19, 2014 Author Report Share Posted July 19, 2014 I will start a new thread as soon as I start the operation, in a week or 2 .. Quote Link to comment
freetheoranges Posted July 27, 2014 Report Share Posted July 27, 2014 True. Worth pulling valve cover off and cranking the engine. Look for a valve that is not closing all the way. Seat out. Wouldn't that like, (for serious) make a mess? [thread hijack] stethoscope is awesome! however limited to just audio. [/thread hijack] Quote Link to comment
datzenmike Posted July 27, 2014 Report Share Posted July 27, 2014 At the least the seat would hang up the valve and it won't close properly. Revved long enough the seat might break, dropping pieces down the bore. The piston would slice and dice it into the soft aluminum head. The valve might snap off and punch through the piston.... 1 Quote Link to comment
freetheoranges Posted July 27, 2014 Report Share Posted July 27, 2014 Thanks for fueling my nightmares. Quote Link to comment
H20doctor Posted August 10, 2014 Author Report Share Posted August 10, 2014 well today i found the reasons for the knocking noise....drumroll please ...... i threw a 18 mm socket on the cam timing sproket put the bolt in and rotated the cam... exhaust valve on cylinder 4... no close ... stuck... siezed... going nowhere.... #4 piston has a tiny chomp in it, not a smiley chomp or a crescent moon shape, small indent mark... So there Ya have it winner winner chicken dinner , stuck valve Quote Link to comment
datzenmike Posted August 10, 2014 Report Share Posted August 10, 2014 Valves rarely seize. The valve may be bent from scuffing the piston and not seating. Did you look at the seat? Is it in place? Quote Link to comment
H20doctor Posted August 11, 2014 Author Report Share Posted August 11, 2014 The seat is fine and in tact... so I would have to tear down the head, and remove the cam to see why its stuck in there ? Quote Link to comment
datzenmike Posted August 11, 2014 Report Share Posted August 11, 2014 No, the valve can be removed without that. You will need enough space to compress the spring and remove the keepers. You may have to lightly tap the valve down onto the seat to do this, then drive the valve out of the guide. Quote Link to comment
H20doctor Posted August 11, 2014 Author Report Share Posted August 11, 2014 yes that requires a valve spring tool and I don't have one... ; ) Quote Link to comment
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