Good morning Jaguar enthusiasts!
I am a proud owner of a 1976 XJ6 Series II.
However, I have had the problem for a long time that the engine does not really run smoothly when idling. The engine starts well, runs quite well while driving. When parking, the engine continues to run for ~ 0.5 sec.
I have already checked the following things:
Intake bridge checked for leaks (with smoke leak detector)
Ignition cable new
Ignition coil new
Ignition distributor 123 new
Ignition distributor cap including distributor rotor new
new and checked spark plugs (not oily and not sooty)
AED completely overhauled and adjusted (distance from the upper edge of the square screw to the sealing edge of the housing approx. 8.5 mm)
both carburetors (HIF7) were cleaned and got a service kit CSK 82 (Gaskets and Seals, main jet and needle valve and seat float bowl), then carburettor adjusted according to manual, damper oil checked (15w40), idling 830 rpm
Cylinder - bar
1 - 12
2 - 12
3 - 11.6
4 - 12.1
5 - 11.3
6 - 11.7
Ignition (measured on the 6th cylinder, without vacuum): 11 degrees before TDC
Valve clearance measured (the WHB says 0.012-0.0014 for intake and exhaust):
Cylinder - Intake - Exhaust
The values for intake (1 and 6) and exhaust (2 and 5) differ slightly. Is that still within the tolerance range?
Does anyone have another idea? Meanwhile I am desperate
P.S.: Kindly excuse my bad English:-)