is there any instruction on here or another website on a way to remove the head because i have a stuck valve and i need it unstuck. is there an easier way to do it?
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Last edited by Guest; 01-02-2008, 05:41 PM. -
Is the valve bent? -
Sometimes a stuck valve is caused by the shimbucket jamming in its bore. You may be able to rectify this by simply removing the valve cover and corresponding cam to access it. Dont try to use pliers or picks. A wooden dowel and mallet should free it just be careful not to damage the bore. If the valve itself is damaged you will have to remove the head.Last edited by Guest; 01-01-2008, 08:58 PM.Comment
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i dont think the valve is bent because it was running fine before i went to get oil and when i got back it knocked when i tried to start it and ticked when it idled. do you think it will help if i spray water into the intake to clean the carbon?
and by jamming in its bore, do i HAVE to take the cam out, or can i work around it.Comment
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Hopefully it is carbon lodged in the seat or on the valve. Hope it isn't anything else. :?
You have to remove the cam to get to the shims. Not a big job so don't sweat it too much.Comment
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If the valve is stuck ?? you will have a very large valve clearance. Take the cam cover off, hit the top of the shim/shim bucket with wooden dowel a few time . Don't need to remove the cams. Then recheck the valve clearance, check the compression.Comment
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i took the spark plug out and cranked it. i could see the valves moving but i dont know if they close all the way.Comment
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Check the valve clearance, a stuck valve will have a lot of clearance.Ed
To measure is to know.
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Make sure it has oil, whats the level now and as for the garden hose keep it in the flower box.1166cc 1/8 ET 6.09@111.88
1166cc on NOS, 1/8 ET 5.70@122.85
1395cc 1/8 ET 6.0051@114.39
1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82Comment
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i just changed the oil and put 3.5 quarts in in ran it for a bit and the level is at the full mark.
garden hose????Comment
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is the head of the engine held on by studs or bolts?Comment
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The head is held tight by both studs and bolts. Three bolts, one on each end and one in front. The remainder are nuts on studs, I am not personally familiar with 850, but 650 heads held with acorn nuts.
In your case, I believe the advice being given is to remove valve cover from top of engine and observe valve operation to see if valve is truly stuck. By checking valve clearance you will quickly find stuck valve.Comment
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im goin to take the valve cover off and check the clearances but i was just curious as to what the head was held on by.Comment
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Good advice all round, at the risk of stating the obvious, before you give the valve a few sharp taps with the hammer and wooden dowel to free it up, remove the spark plug and make sure the piston is at the bottom of the stroke, otherwise you will knock the valve against the piston crown, and then you will have a bent valve and a head job on your hands.:shock:8-[
Over that side of the pond, in the U.S of A you are very fortunate to have a fantastic product called "Sea Foam" for removing carbon and varnish inside a motor, wish I could get my hands on some here, but alas....
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