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Post by anna on Apr 29, 2021 17:12:53 GMT
Hallo everybody. Has anyone had trouble removing spark plug before from CB400N? I have a plug on right side that will turn with wrench but only very slowly it seems so hard. I am worries that will snap. Any advice is appreciated,.thank you again. Anna
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Post by The Great High Lord Beer on Apr 29, 2021 17:24:54 GMT
Give it a squirt of WD40 or other penetrating oil and let it sink in, it should be fine.
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Post by anna on Apr 29, 2021 17:39:07 GMT
Give it a squirt of WD40 or other penetrating oil and let it sink in, it should be fine. Thank you Lordbeer, I tried this in fact soaked for two days before trying again and still so stiff. I will leave soak for longer. Why so stiff I wonder. left side was not I wonder if there is deeper issue. |
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Post by davefirestorm on Apr 29, 2021 17:41:36 GMT
WD40 left to soak in then take it slowly unscrewing and give it a turn clockwise too every couple turns as if you were tapping a new thread.Inspect thread and bung new plug sourced from a reliable supplier.fingers crossed š¤š½
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Post by andy1kenobe on Apr 29, 2021 17:42:51 GMT
Try tightening and loosening it, only slightly, to work the penetrating fluid into the threads. I hope there's no damage and you get it out ok.
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Post by andy1kenobe on Apr 29, 2021 17:47:02 GMT
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Post by The Great High Lord Beer on Apr 29, 2021 17:50:01 GMT
Let us hope it's not cross threaded, that would be a real pain.
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Post by davefirestorm on Apr 29, 2021 18:25:46 GMT
Unlikely to be cross threaded me thinks itās long thread to force all way down likely over tightened or a counterfeit plug hopefully a happy conclusion when itās out run a tap with lots of grease on it down thread
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Post by The Great High Lord Beer on Apr 29, 2021 18:38:17 GMT
Agree Sir dave, but if the threads were in poor condition when the plug was fitted it can become cross threaded on the way out, let us hope this is not the case, Sir Andys advice is sound, inchy pinchy, back and forth, easy does it.
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Post by buster on Apr 29, 2021 19:06:47 GMT
is there any alloy corrosion coming up with the plug threads? if the threads female thread is corroded it can compact and then it feels like its tightening even though your turning anticlockwise. it may be worth screwing the plug home again (if you can) and warming the engine and then trying again
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Post by anna on Apr 30, 2021 21:14:55 GMT
Thank you for all the advice it is now out.
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Post by CTB on Apr 30, 2021 21:33:13 GMT
Good job š
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Post by terryc on May 2, 2021 9:58:50 GMT
Thank you for all the advice it is now out. Do you know what the problem was Anna ? |
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Post by anna on May 17, 2021 17:56:16 GMT
Thank you for all the advice it is now out. Do you know what the problem was Anna ? Hallo TerryC. I think just needed to put more releasing lubricant in as I did...then took forum advice and undid and retightened plug gently until eventually it came out.  So glad it never broken. |
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Post by davefirestorm on May 17, 2021 19:02:06 GMT
And donāt overtightenš ( I donāt know what torque value is ) I overtightened one in a car years ago and learned a lesson thenš
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