Jaguar XK140 tachometer failure

Car: Jaguar XK140
Variant: DHC
Model Year: 1955

Tachometer was reading correctly then read zero briefly with engine idling then jumped into life with blip of throttle. Now stopped altogether at just above zero.

Posted: Apr 8, 2023 (1 year ago)

James

Points: 1

Could possibly be the rev counter adapter but head also is a possibility , similar to these . Hope it's just the former

https://coventryautocomponents.co.uk/store/c2153.1-c2176-rev-counter-drive

https://coventryautocomponents.co.uk/store/index.php?route=product/product&product_id=1464&search=rev+counter

Posted Apr 8, 2023 (1 year ago)

whittingehame

Points: 38,734

Thank you for response. I don’t know where the adapter goes in the drive train to head but I disconnected drive from back of tachometer and found inner rotated when engine running. So that narrows down to the head, I think. Would you agree? Your help is greatly appreciated!

Posted Apr 14, 2023 (1 year ago)

James

Points: 1

Provided the end of the cable is not rounded , looks like you have the more expensive fix of the head unfortunately

Posted Apr 14, 2023 (1 year ago)

whittingehame

Points: 38,734

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