Help Plugs & Packs (Went wrong somewhere)

[DevilDisco]

Took out the secondary air pipes in the '04 to switch out the wires. Just over 54k decided I'd been putting it off swaping in the 8mm magnecors. Went wrong some where. Put everything back together and the idle is way high. SES is flashing. I suspected I might have crossed the wires. I had to take two out just to put the last ones in so swapping out wire for wire went down the tubes. Does anyone have a diagram that shows what plug goes to where on the coil pack.

[armydisco]

1-8-4-3-6-5-7-2
shown from workshop manual for 4.0/4.6 DII

[Rovin4life]

army disco is way off.


starting from the driverside it top to bottom it goes this way

1 6 5 8
7 4 3 2


driverside is odd side and passenger side is the even number wires.


why did you replace the wires, the plugs arent even due till 60k

with secondary air dont bother replacing them unless you have multiple misfires.

otherwise replace one wire and ship it. that way if a coil is bad you save yourself the trouble of not going in twice.

[DevilDisco]

Thanks everyone. Its running smooth, now. I just wanted to do some PM. I had a slight stumble at idle but nothing to scream about. The dealer did not want to use my plug wires at the 60k so I decided to do it myself and let them do the plugs later or I may still do them myself since the hard part is done. The stumbling appears to have gone. Acceleration feels more responsive. I put in the Magnecors 8mm (Thanks Mike) .

The is the info I needed.

Coil Packs
8 5 6 1
2 3 4 7
Top of Packs

8 7
6 5
4 3
2 1
Front of Engine

Some how I dorked it all up. I can't even tell you how jacked it was. I knew as soon as I turned the engine over. I only ran the engine for 10 sec and I knew. I ended up running 6 first then 5, then 4 and 3, 1 and 8 were right so were 2 and 7 but I had to unplug all the wires from the top of both packs to get to 5 and 6. Few cuts, few scrapes but the engine feels good. I'm sure some new plugs will make it a little peppy. The wires have already made an impression on me and I don't mean the cuts on my hands and wists. Gloves were not an option hands are to big but not bad for not removing the intake manifold. Now for a beer.

[armydisco]

Originally Posted by Rovin4life

army disco is way off.


starting from the driverside it top to bottom it goes this way

1 6 5 8
7 4 3 2


driverside is odd side and passenger side is the even number wires.


why did you replace the wires, the plugs arent even due till 60k

with secondary air dont bother replacing them unless you have multiple misfires.

otherwise replace one wire and ship it. that way if a coil is bad you save yourself the trouble of not going in twice.

I guess the info I have is wrong then, my apologies.


ENGINE V8

General
Cylinder arrangement V8, numbered from the front of the engine:

Left bank cylinders 1, 3, 5 and 7

Right bank cylinders 2, 4, 6 and 8
Bore 94.00 mm (3.70 in)
Stroke:

4.0 litre

4.6 litre
71.04 mm (2.80 in)
81.92 mm (3.22 in)
Capacity:

4.0 litre

4.6 litre
3950 cm 3 (241 in 3 )
4554 cm 3 (278 in 3 )
Firing order 1 - 8 - 4 - 3 - 6 - 5 - 7 - 2
Compression ratio:

Low - 4.0 litre 8.23:1

High - 4.0 and 4.6 litre 9.35:1
Direction of rotation Clockwise viewed from the front of the engine
Maximum power - 4.0 litre:

Low compression ratio 132 kW (177 bhp) at 4750 rev/min

High compression ratio - UK/Japan/ROW 136 kW (182 bhp) at 4750 rev/min

High compression ratio - NAS 140 kW (187 bhp) at 4750 rev/min
Maximum power - 4.6 litre 162 kW (217 bhp) at 4750 rev/min
Maximum engine speed:

Continuous
5000 rev/min

Intermittent 5250 rev/min
Weight (fully dressed, wet)

Manual 194 Kg (435 lb)

Automatic 179 Kg (402 lb)
Dimensions:

Length - Manual 767 mm (30.2 in) (Including fan)

Length - Automatic 777 mm (30.5 in) (Including fan and drive plate)

Width 652 mm (25.7 in)

Height 746 mm (29.4 in)
Spark plugs:

Make/Type - 4.0 litre Champion RC11 PYP B4

Make/type - 4.6 litre Champion RN11 YCC

Gap - 4.0 and 4.6 litre 1.00 ± 0.05 mm (0.040 ± 0.002 in) Non-adjustable
Coils:

Make Bosch 0221 503 407

Type Twin coils
Fuel injection system:

Make Bosch Motronic 5.2.1 Type 4146

Type Multiport fuel injection, electronically controlled with electro-mechanical
injectors

[Rovin4life]

the 60k service doesn't include the wires so you would have been charged for them to be installed.

unless you spot a bad plug wire usually number four or six will get heat damaged and turn white and start to misfire.

[DevilDisco]

The wires seem to be visibly OK. I've kept them just in case but so far so good. I did not take off the intake manifold that made things very tight so I had to unplug a few to get to the wires at the bottom of the coil packs. Took a test run and the engine seems to be responding better to them. I'm getting more response from very little throttle input.(relatively speaking) Also did the plugs. Yes I did use the +4's and the drive to work was very pleasent. I usually hit 3k RPM's to merge onto the freeway, did not have to today. Engine did all the work at 2.5RPM's and below. Idle is a little faster at just a tick over .5k RPM's. I'd estimate about 700RPM's.

I also think I got rid of a tick that the dealer told me not to worry about. I have not heard it since I change the plugs and wires.

One reason I was doing this was prep for having the engine chipped, and I felt like it was time. Not sure if I am still going to chip it as it will cost me 2 days down time but I'm happy with the results.

[Elemental]

Originally Posted by DevilDisco

Also did the plugs. Yes I did use the +4's and the drive to work was very pleasent.

Please put in the correcet plugs and see what happens.

[DevilDisco]

I did run the Disco with Magnecor's and the stock plugs. After I straigntened out the Magnecors. I went for a drive and the truck seemed a little more repsonsive so I was curious. I let the engine cool and then I switched the out last night. I had a short drive last night and all was well. When I said the drive was pleasent, I was not being sarcastic. It actully was, as soon as I hit the skinny pedal I got feedback. The engine felt very strong this morning.

So I tried both. Stock and Bosch +4's If the SES comes on I'll let you know but those babies are staying I get a sign that the Disco does not like it.

I even numbered the plugs and put them in the Bosch boxes for safe keeping so I could put them back in their original cylinders if necessary. I'm guessing that if the engine did not like these plugs it would have told me right away but for now I'm a happy

[DevilDisco]

It's day 3 with the Bosch +4's and Magnecor wires. The ticking I got at idle is definitle gone. It just sounds like a strong stock V8. Engine is defintely more response and since I've been trying to use only as much engine power as needed fuel consumption seem slightly imporved. I'll know when I fill up later this week. I'm also now using a K&N HP 3001 oil filter along with the K&N replacement filter no problems there either.