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  #26   IP: 24.224.194.51
Old 05-12-2017, 07:35 PM
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Compression numbers indicate valves stuck. Don't pull the head just yet although it may have to happen. Initially I'd devise a little tube douse the valves with penetrating oil.

1. Remove all plugs (number your wires with tape so you don't put them back on in the wrong order)
2. Get a small flexible tubing from hardware store...clear is good about 1/4 inch diameter.
3. Pick up a can of PB Blaster.
4. Insert the tube so that it goes over next to the valve. Look in with a light and you will see the valves off to the right about 4 inches on a forward facing engine...if you engine is reversed, opposite side.
5. Spray allot of PB blaster into the tube so that it makes it's way over to the valves...you want to soak them....dont be shy with the spray.
6. An hour later do it again...repeat 3 or 4 times over the next few hours.
7. Turn the engine over on starter...repeat spray if you notice valves have not moved. No need to put plugs back in but take off coil wire and cover to contain spark...beware of fuel and fumes.
8. Might want to try this a couple of days and they might free up.

That number one is likely stuck, the other two may or may not indicate a head gasket leak. With the high probability of number one stuck it's very possible the other low numbers are partially stuck.

There are a few other things you can try like removing the side plate and freeing the valves that way, however, with so many showing poor numbers, I'd remove head after no response from above effort. Once head is removed you free and reseat the valves, new head gasket, good to go....be patient for a couple of days and you might not have to go there.
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BLACKBIRD2 (05-13-2017)
  #27   IP: 24.224.194.51
Old 05-12-2017, 07:39 PM
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Worth a try.

Compression numbers indicate valves stuck. Don't pull the head just yet although it may have to happen. Initially I'd devise a little tube douse the valves with penetrating oil.

1. Remove all plugs (number your wires with tape so you don't put them back on in the wrong order)
2. Get a small flexible tubing from hardware store...clear is good about 1/4 inch diameter.
3. Pick up a can of PB Blaster.
4. Insert the tube so that it goes over next to the valve. Look in with a light and you will see the valves off to the right about 4 inches on a forward facing engine...if you engine is reversed, opposite side.
5. Spray allot of PB blaster into the tube so that it makes it's way over to the valves...you want to soak them....dont be shy with the spray.
6. An hour later do it again...repeat 3 or 4 times over the next few hours.
7. Turn the engine over on starter...repeat spray if you notice valves have not moved. No need to put plugs back in but take off coil wire and cover to contain spark...beware of fuel and fumes.
8. Might want to try this a couple of days and they might free up.

That number one is likely stuck, the other two may or may not indicate a head gasket leak. With the high probability of number one stuck it's very possible the other low numbers are stuck in different positions.

There are a few other things you can try like removing the side plate and freeing the valves that way, however, with so many showing poor numbers, I'd remove head after no response from above effort. Once head is removed you free and reseat the valves, new head gasket, good to go....be patient for a couple of days and you might not have to go there.
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The optimist expects it to change.
The realist adjusts the sails.
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  #28   IP: 184.3.230.68
Old 05-13-2017, 09:22 AM
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A 0 psi reading is usually caused by a stuck valve. It can frequently be freed by the patient application of Marvel Mystery Oil. Squirt some in the cylinder thru the spark plug hole, trying to aim for the valves. Turn the engine over by hand a few times and let it sit for a day. Retest the compression. Repeat as necessary. It may take a week until it comes loose, so be patient.

Edit - Mo types faster!
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Last edited by edwardc; 05-13-2017 at 09:25 AM.
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  #29   IP: 104.249.225.215
Old 05-13-2017, 07:12 PM
BobMcD BobMcD is offline
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Zero could be caused by a stuck open valve!
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  #30   IP: 32.211.28.40
Old 05-13-2017, 10:04 PM
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Agree that the 0 psi reading is a stuck valve. Verify visually through the spark plug hole or by removing the valve cover plate. Suggestions for freeing the valve/lifter are good. Engine should run OK if you get #1 working.
#3 and #4 are quite low - my guess is bad valve seats, probably exhaust. Could also be a bad head gasket between #3 and #4. These low pressures shouldn't keep the engine from running OK.
What's the history on this engine? These engines do have to be overhauled periodically, primarily for rings. Oil consumption, smoke in the cabin?
Occasionally for bearings - hows your oil pressure?
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  #31   IP: 107.72.162.46
Old 05-16-2017, 02:56 PM
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Name:  may 054.jpg
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this is water weeping out of the stud,,for #4Name:  may 058.jpg
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Size:  95.1 KB this looks like the valves had some work from PO,,at least 4 years ago, the other picture is of my thermostat housing,,and is there enough thread on those studs to work when its time?
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  #32   IP: 107.72.162.92
Old 05-18-2017, 07:00 AM
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my bad

posted wrong pic, for value cover,,water jacket cover instead, im not very computer literate.
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  #33   IP: 97.32.65.99
Old 05-20-2017, 07:35 PM
Ken Rockwell Ken Rockwell is offline
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We need a top veiw. Pistons and valves, and a side veiw of the ports, lifters, and springs. Did all the valves and pistons seem to work fine when you turned it over?
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  #34   IP: 107.72.162.55
Old 05-25-2017, 07:09 AM
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Ken when i get the head off i will post pictures of the block,,getting the head off hasn't happened yet,,really on there,,
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