Vauxhall Workshop Service and Repair Manuals

Engine management  

Engine		C 18 XE	C 18 XEL	C 18 SEL, X 18 XE, X 20 XEV
Coding		Simtec 56.0	Simtec 56.1	Simtec 56.5
Ignition sequence			1-3-4-2
Spark plugs		FR 8 LDC 4 / FLR 8 LDCU

Engine			C 20 XE
Coding
	Up to MY '93		Motronic M 2.5
	MY '93 onwards		Motronic M 2.8
Ignition sequence			1-3-4-2
Spark plugs			FR 8 LDC 4 / FLR 8 LDCU