Engine Mechanical problem
1986 Jaguar XJS V12 Two Wheel Drive Automatic 150000 miles
hi-i have strange problem with a customers v12 jag
he drove car to my shop but ran poorly
changed plugs wires-filters now won t start-i checked rotor arm position at tdc and it was 120 degrees out!
i pulled distibutor to reposition butstill wouldn t start if I move it another 120 deg it starts but rns really flat but is detonating
if I try n retard it kills motor
if I advance it picks up a little but worsening detonation
motor has compression and firing order correct-i suspect jackshaft problem as dist gear ok
if I have compression presuming timing chain and camshafts phased ok-we have good spark and injectors are pulsing-am I missing something?
Monday, November 9th, 2009 AT 8:24 AM