Ignition Pack Removal.
Read anything you can find about replacing a coil pack on a 4.6 V8 (banana inlet manifold) and you will be told (with resulting horror!) that the inlet manifolds have to be removed to gain access.
Firstly, let me lower your blood pressure, by assuring you this is NOT the case. Ive just replaced a defective pack (£50) with just a few tools and a skip-load of patience!
You will need:-
6 9 screwdiver.
6 long-nose pliers.
Inspection mirror.
Lead lamp/torch.
8mm socket with ratchet/rods etc
Means of climbing into the engine bay and lying prone for 15minutes at a time.
The two quad-ignition packs are mounted to a bracket which is bolted to the rear of the inlet manifolds, by 4 X 8mm bolts. The space left between the packs/leads and bulkhead is less than three inches. To say the least, therefore, access is diabolical and the engineer responsible for this should have been shot!
Looking from the drivers seat, the pack layout is as follows:-
Clockwise, from the top lhs, the outputs feed the following cylinders: 1, 6, 5, 8, 7, 4, 3 & 2.
From the same viewpoint, the cylinder numbers are:- (left bank 1, 3, 5, 7) (right bank- 2, 4, 6, 8)
Cylinders 1 and 2 are referenced to the front of the engine (pulley end).
Process
Carefully lever off the ignition leads from the 8 outputs, using a screwdriver (if necessary) and remove them from the engine. I suggest replacing them with new ones (about £30). You will find it helpful to unhook the fuel rail at the rear nearside of the engine, as this will allow you slightly better access for hand manipulation.
Remove the 2 module plugs taking care not to lose the retaining clips.
Remove the 4 x 8mm bolts holding the bracket to the engine. The tops ones are easy but the bottom ones need the inspection mirror and a lot of dexterity and patience.
With some fiddling, flip over the bracket/coil assembly and remove the 4 x 8mm bolts securing the packs.
Each pack can now be edged out via the top lhs of the engine. Be careful not to drop one, as I did and broke one of the output shrouds.
Replacement is the reverse of the above but beware that mating the ignition leads with the pack connectors is very tiresome and you will need warm hands to feel each one in.
Well thats it. Allow yourself four hours and good luck.
Read anything you can find about replacing a coil pack on a 4.6 V8 (banana inlet manifold) and you will be told (with resulting horror!) that the inlet manifolds have to be removed to gain access.
Firstly, let me lower your blood pressure, by assuring you this is NOT the case. Ive just replaced a defective pack (£50) with just a few tools and a skip-load of patience!
You will need:-
6 9 screwdiver.
6 long-nose pliers.
Inspection mirror.
Lead lamp/torch.
8mm socket with ratchet/rods etc
Means of climbing into the engine bay and lying prone for 15minutes at a time.
The two quad-ignition packs are mounted to a bracket which is bolted to the rear of the inlet manifolds, by 4 X 8mm bolts. The space left between the packs/leads and bulkhead is less than three inches. To say the least, therefore, access is diabolical and the engineer responsible for this should have been shot!
Looking from the drivers seat, the pack layout is as follows:-
Clockwise, from the top lhs, the outputs feed the following cylinders: 1, 6, 5, 8, 7, 4, 3 & 2.
From the same viewpoint, the cylinder numbers are:- (left bank 1, 3, 5, 7) (right bank- 2, 4, 6, 8)
Cylinders 1 and 2 are referenced to the front of the engine (pulley end).
Process
Carefully lever off the ignition leads from the 8 outputs, using a screwdriver (if necessary) and remove them from the engine. I suggest replacing them with new ones (about £30). You will find it helpful to unhook the fuel rail at the rear nearside of the engine, as this will allow you slightly better access for hand manipulation.
Remove the 2 module plugs taking care not to lose the retaining clips.
Remove the 4 x 8mm bolts holding the bracket to the engine. The tops ones are easy but the bottom ones need the inspection mirror and a lot of dexterity and patience.
With some fiddling, flip over the bracket/coil assembly and remove the 4 x 8mm bolts securing the packs.
Each pack can now be edged out via the top lhs of the engine. Be careful not to drop one, as I did and broke one of the output shrouds.
Replacement is the reverse of the above but beware that mating the ignition leads with the pack connectors is very tiresome and you will need warm hands to feel each one in.
Well thats it. Allow yourself four hours and good luck.
