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[jonny2112]

Thanks for that Andy 

[05omegav6]

the coil packs can give up once removed from engine,both off mine did when i did cam covers last year.

This usually creates a horrendous misfire, nothing to suggest that yours is misfiring

Codes are saying misfire

New -
P0325 Knock sensor 1 circuit high input (Bank 1 or single sensor) or  Knock sensor 1 circuit low input (Bank 1 or single sensor)
P0330 Knock sensor 2 circuit high input (Bank 2) or Knock sensor 2 circuit low input (Bank 2
0300 Random/multiple cylinder misfire detected
0301 Cylinder 1 Misfire Detected
0304 Cylinder 4 Misfire Detected

My bad must have missed a page in my absence yesterday

[Marks DTM Calib]

Most of the cam oil supply will come from the feeds to the followers as it spills out the top a bit when the valve is open. Cam bearing supply is from oil feeds through the lower cam bearsings, all are fed via a single drilling and  T-vent which restricts the flow to the head.

[jonny2112]

Most of the cam oil supply will come from the feeds to the followers as it spills out the top a bit when the valve is open. Cam bearing supply is from oil feeds through the lower cam bearsings, all are fed via a single drilling and  T-vent which restricts the flow to the head.

Nothing really that I could have done to upset the flow then? Always a bonus!

[Marks DTM Calib]

The sound is a missfire, not a mechanical noise.

Its interesting that missfires on are on 1 and 4....if it had a dispack then it would be dead obvious!

The correct coil packs are on the right banks?

[05omegav6]

Presumably even pattern coil packs are numbered 135/246

[jonny2112]

The correct coil packs are on the right banks?

Yes, as they were done individually, and not both 'off' at the same time. Got me wondering now though ....
I was a bit confused by the opposite side cylinders misfiring 
Is there any point in me rechecking the plugs at this stage?

[05omegav6]

Have you double checked the wiring plugs on the coil packs might be worth unplugging and reconnecting them, making sure that they 'click' home fully

[jonny2112]

Have you double checked the wiring plugs on the coil packs might be worth unplugging and reconnecting them, making sure that they 'click' home fully

Cheers al, that's on my to do list for tomorrow 

[05omegav6]

In theory the packs are interchangeable side to side, but they don't fit properly but do work which suggests that the coilpack plugs are wired in the same order.

If you happen to have plugged them in slightly skewed, and plugged both in in the same way, the same pin on both plugs may not be fully home causing the misfire on both front cylinders.

Which is, I think, what MDTM was hinting at

[jonny2112]

Never thought of it like that.
That'll be interesting then when I start playing again tomorrow.

[jonny2112]

Just listened to the video and its miss firing and running on four pots.

Start with the simplestuff, check ALL the connections, start at the rear of the plenum and work round which should be.

Large breather pipe
Carbon cannister vent pipe
Small breather pipe
Large breather pipe
Rear multiram connector
Injector multiplug
2-4-6 bank ignition module (make sure its FULLY home)
Crank (would not be running but lets be complete)
Main manifold vac pipe (to brake servo)
Cam sensor
Bank 2 knock sensor
Throttle valve plug
Front multiram plug
Bank 1 knock sensor plug (mounted on cam cover cable tray)
MAF plug

Went out tonight and checked round everything as best as I could. Granted it was done by torchlight! Nothing obvious found. I'll need to take the Plenum back off, and maybe the inlet, so I can fully check the coil connectors (particularly near side) and the breather pipes. I didn't open the main cable tray so can't see it would be something in there, though should I be opening it anyway to check? I'll maybe try to swap some of the o/s plugs just to check on the possible source of that misfire (plug/socket?).
The misfire was present once the initial work was done, so shouldn't be the MAF connector or front multiram, etc but they seem correct in any case.
If I can satisfy myself these are all correct, what's next?

[jonny2112]

Actually, the misfire and knock sensor codes only appeared after I drove it, not after the initial work.

[jonny2112]

Crank (would not be running but lets be complete)
Main manifold vac pipe (to brake servo)
Cam sensor
Bank 2 knock sensor

What is the location for the first two please?
And the second two - are they the loosely held connections at the front of the nearside cable tray?
Thanks.

[05omegav6]

Crank (would not be running but lets be complete) Above and behind the oil filter, connects at rear of cabletray.
Main manifold vac pipe (to brake servo) king great pipe that connects plenum to brake servo, also pipe off non return valve...easy to snap that
Cam sensor. Yes.
Bank 2 knock sensor. No front and top of the cable tray. Tother one in front of engine is Bank 1

What is the location for the first two please?
And the second two - are they the loosely held connections at the front of the nearside cable tray?
Thanks.

Bank 1=right hand side (from drivers seat), cylinders 135,
Bank 2=tother side, cylinders 246.

cylinders numbered from front of engine