This afternoon was spent trying to reduce (it's British so will not use the word stop) leaks both oil and air. I decided to tackle the the cam cover and related seals on the exhaust side. The good news is that I didn't notice any cracks in the cam covers which is a notorious problem with these covers. So after cleaning the surfaces, finding a new 'o' ring and cork seal for the end I resealed the cam covers (after cleaning). Hopefully this will slow the leaks coming down onto the exhaust pipes.
One concern for today is the absence of tappet guide hold downs especially on the exhaust side. It is not uncommon for the tappet guides to ride up with the resulting contact with the cam lobes causing significant damage to an XK engine. There are several different types of hold downs available and I would definitely recommend that we make this modification on your car Michelle.
While I was trying to slow the idle yesterday and found that adjusting the idle speed screws made little difference in idle speed it dawned on me that there must be a vacuum leak most likely in the brake system. After checking the various components it appears that the valve at the brake vacuum tank is the culprit. Now need to figure out what to do about it, I will just cap off the line while I try to tune the carbs but will need to research this a bit more.
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| Valve covers off revealing the absence of a stake down kit |
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| Cleaned cam cover reinstalled. |
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| Back of cam cover where the 'O' ring and cork seal live, right hand at the end of the cover. |
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| In this picture you can see the lock down plate, held in place by the two allen head screws |
Cheers,
3 hours
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