Another l322! Another problem!

Hello,

Picked up another 2004 L322 4.4 V8 Vogue to make money on. Only paid £2800 for it. Gearbox has been changed, new air bags and compressor.

It starts and drives but has a heavy misfire. Code readers says:

Random Multiple Cylinder Misfire Detected,
Cylinder 3 misfire,
Cylinder 4 misfire,

What should I start checking.

It has 200,000 miles on clock so I think maybe HEAD GASKET. But no coolant in oil and no oil in coolant. Oil filler cap is clean with no creamy mayo, no overheating. Haven't drove it to see if it uses water.

Money pit comes to mind !

Oil in spark plug wells...??

2.0_hippo said:

Money pit comes to mind !

Click to expand...

Aren't they all

Very slight oil in plug wells. I don't think its to the extent that it would cause a misfire.

Forgot to say the engine lights flashes. You can clear codes but misfire stays, then when you rev it for 10 seconds, the engine lights flashes again.

Flashing means there is the potential for the misfire fault to damage the cats...

Does it judder when revved and struggle to reach full revs??

If so, it could be the cats breaking down and causing a blockage.

It shakes when you drive off and then picks up on power so reaches full revs.

hmmm...try removing the upstream Lambdas and see if she revs better....

Plugs and leads might be a good place to start.

Datatek said:

Plugs and leads might be a good place to start.

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No leads.....coil-over-plug ignition.

Saint.V8 said:

No leads.....coil-over-plug ignition.

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No wiring to the coils then?

Datatek said:

No wiring to the coils then?

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Oh, yes obviously...

Ok. I will get new plugs tomorow and try swapping the coil packs too. Just read the receipts that came with the car and it shows 50k miles ago the water system was pressurising and to solve that, they threw 3 bottles of steel seal into it.

Do you think this steel seal could have held the engine together for 50k miles? There is no smoke when the car is being driven.

RAJSAMRA20 said:

Ok. I will get new plugs tomorow and try swapping the coil packs too. Just read the receipts that came with the car and it shows 50k miles ago the water system was pressurising and to solve that, they threw 3 bottles of steel seal into it.

Do you think this steel seal could have held the engine together for 50k miles? There is no smoke when the car is being driven.

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Look at the plugs you take out and see if the ones from the cylinders missfiring look steam cleaned.
Sounds horribly like the engine is fecked

yep, with that stuff in, it has probably been diagnosed before as a dead engine..
Sh111T..
definitely check plugs....

Sad news

Low compression on 2 adjacent cylinders (cylinder 3 and 4) !! What can it be? Valves or Head Gasket?

Plugs are perfect. Coil Packs didn't make a difference when swapped around.

RAJSAMRA20 said:

Sad news

Low compression on 2 adjacent cylinders (cylinder 3 and 4) !! What can it be? Valves or Head Gasket?

Plugs are perfect. Coil Packs didn't make a difference when swapped around.

Click to expand...

HGF between cylinders if you are lucky. The engine is so stupidly complicated that whipping the head off is not an easy option though.

datatek said:

hgf between cylinders if you are lucky. The engine is so stupidly complicated that whipping the head off is not an easy option though.

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+1

How much is a head gasket job anyways and anywhere you can recommend?