[xk] Re: [xk-engine] Here is a new one for me--comments welcome!

XK
1

George,
How about the possibility of a loose tappet guide. I know that usually only
happens with engines loaded up with emission controls. Easy to check.

Gene McGough
XK-150 FHC S834515DN
XJ6C II 1976----- Original Message -----
From: “George Camp” scjag@juno.com
Sent: Saturday, February 05, 2011 3:43 PM

. . . Suddenly while driving at a
constant speed a hard metalic knock started that my scope places
between #4 and % in the center of the head.
. . .
The knock is not always in time with the engine speed–it will come
and go at steady throttle.
. . .

JCRC SE member JCNA Publications and Authenticity Desk
Columbia SC, United States

2

In reply to a message from Gene McGough sent Sat 5 Feb 2011:

Thanks Gene-it is a 150 but I did pull the cam coovers to check
valve spring strength and the cams–all is fine there.–
The original message included these comments:

How about the possibility of a loose tappet guide. I know that usually only
happens with engines loaded up with emission controls. Easy to check.

–
JCRC SE member JCNA Publications and Authenticity Desk
Columbia SC, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –

3

In reply to a message from Gene McGough sent Sat 5 Feb 2011:

George
I posted a reply on the XK engine forum. Good luck.
Joel–
ex jag, '66 E-type S1 4.2, '56 XK140dhc, '97 XJ-6
Denison, TX, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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