Classic wrong firing order for EFI 3,9 1991 ?

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roule

Active Member
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144
Location
france
Hi,
My RRC vogue SE has very less power, i checked the ignition wires and find 1/4/6/3 instead of 2/4/6/8 on right side, and 8/2/5/7 instead 1/3/5/7 on left side ??
I wonder what 's the problem...should i change the wires ?
 
If i were you, I'd take the leads off and start again then you know it's right. Leads could be put on wrong, labelled up wrong etc
Have you just bought it? Had it always been a problem?
 
Your numbering of the cylinders - odds on the left & evens on the right viewed from the driver's seat facing forwards - is correct.
The firing order is 1 8 4 3 6 5 7 2.
https://www.roverparts.com/Techtips/Firing-Order-and-Ignition-Cable-Routing.cfm (brian beat me to it!)
To avoid any doubt remove the left hand rocker cover & No1 spark plug - the front cylinder on the left bank. Using a long rod of suitable diameter in the plughole turn the engine by hand in its normal direction of rotation until No1 has both valves closed and the piston is at Top Dead Centre.
The lead position that the rotor is now pointing at is No1 & the rest are numbered from there.
Leads are a service item. Avoid leads touching to prevent crossfiring.
 
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