Spark plug is smashed, ideas?
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All bad things. A spun main bearing that has chewed your crank to bits, or the wrist pin has eaten the piston.
Even then, getting to the spark plug is not easy. If it is a definite mechanical knocking sound, you might be looking at a broken valve?
Even then, getting to the spark plug is not easy. If it is a definite mechanical knocking sound, you might be looking at a broken valve?
Last edited by mhminnich; 01-20-2019 at 04:21 PM.
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89 Jacobra (01-21-2019)
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Hopefully, the cylinder will not need a sleeve. I am not worried about crank, I fix them all the time, no big deal. I just drop oil pan and fix conn. rod journal.
Not a sleeve, not a sleeve.... I hate removing engines!!! I was repairing Toyota Sequoja, I removed engine 3 times!!!!!!!
Maybe I should go to church and pray "not a sleeve job!!!"
Wish me luck!!!
It is always a question how smart previous owner was. Morons keep driving cars with knocking engines until they get block hole! Welders charged me $120 to weld a block hole in some Mazda..
Not a sleeve, not a sleeve.... I hate removing engines!!! I was repairing Toyota Sequoja, I removed engine 3 times!!!!!!!
Maybe I should go to church and pray "not a sleeve job!!!"
Wish me luck!!!
It is always a question how smart previous owner was. Morons keep driving cars with knocking engines until they get block hole! Welders charged me $120 to weld a block hole in some Mazda..
Last edited by car5car; 01-22-2019 at 10:15 AM.
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#16
I personally dropped a small nut in some engine. Lucky me, I could fish it out with a camera and a magnet. Maybe, I'll use camera for this one, Who knows, there is always a chance for easy solution. I have bunch of car projects and not sure when I will get to this one. I am not done with X-type yet, have to replace washer pump and fix rear bumper cover. Whenever I get to XK8, I'll keep you posted.
#17
It's a short list of things that can contact a spark plug. The piston is most likely. Now the question, why? If someone installed the wrong (too long) spark plug, that might do it. A dropped valve?, depending on the orientation of the valve and spark plug. I don't know enough about this engine to say. Since the spark plug is already out, do a compression check on that cylinder. If a valve is dropped, you will have no compression. Compare the compression to other cylinders to see if it's good. If you have good compression, it's probably in the bottom end as was mentioned. Good luck and please keep us posted.
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car5car,
If you don't have a borescope/endoscope, there are a lot of very inexpensive ones available on eBay that will connect to your phone. That would give you an indication of the condition of the piston and possibly the presence of a broken valve prior to pulling the head.
Sorry you're having to deal with this, but will look forward to your next update.
Cheers,
Don
If you don't have a borescope/endoscope, there are a lot of very inexpensive ones available on eBay that will connect to your phone. That would give you an indication of the condition of the piston and possibly the presence of a broken valve prior to pulling the head.
Sorry you're having to deal with this, but will look forward to your next update.
Cheers,
Don
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