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Duncanincapable

Active Member

• Feb 22, 2018

• #1

4 litre petrol gems engine
Failed it's mot on emissions readings as follows
Fast idle co 5.292
Hc 842
Lambda 0.912

Second idle co 5.986
Hc 1069
Lambda 0.876
Natural idle co 3.455 %volume
Exhaust emits excessive dense blue smoke during acceleration.

I have 5 days before the mot runs out I need some help.
I have no access to fault codes stored.

 

wammers

No longer with us, RIP

Donater

• Feb 22, 2018

• #2

Duncanincapable said:

4 litre petrol gems engine
Failed it's mot on emissions readings as follows
Fast idle co 5.292
Hc 842
Lambda 0.912

Second idle co 5.986
Hc 1069
Lambda 0.876
Natural idle co 3.455 %volume
Exhaust emits excessive dense blue smoke during acceleration.

I have 5 days before the mot runs out I need some help.
I have no access to fault codes stored.

Click to expand...

If it's blowing blue smoke it's burning oil.

 

D

Duncanincapable

Active Member

• Feb 22, 2018

• #3

wammers said:

If it's blowing blue smoke it's burning oil.

Click to expand...

I did stick some redex in tank last week could that be the smoke?

 

discool

Well-Known Member

• Feb 22, 2018

• #4

White smoke with Redex, how do I know that

 

Kev12

Well-Known Member

Full Member

• Feb 22, 2018

• #5

Blue smoke is oil, nothing else it can be.
The CO and HC could be put down to a dodgy lambda sensor as both of those readings are out of range. But they are well above the limits for a CAT vehicle

 

Fergie46

Active Member

• Feb 23, 2018

• #6

How long has the engine been emitting "dense blue smoke" ?

How often do you have to top up the crankcase?

 

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Duncanincapable

Active Member

• Feb 24, 2018

• #7

Fergie46 said:

How long has the engine been emitting "dense blue smoke" ?

How often do you have to top up the crankcase?

Click to expand...

 

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Duncanincapable

Active Member

• Feb 24, 2018

• #8

I did head gaskets and valve stem seals and cured the smoke but since I put the plenum the right way round and connected up the crankcase breathers it has started blowing smoke. Haven't had to fill oil as yet.

 

Kev12

Well-Known Member

Full Member

• Feb 25, 2018

• #9

Have you checked the crankcase breathers aren't blocked? Also check that the oil separator is still present

 

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Duncanincapable

Active Member

• Feb 25, 2018

• #10

Kev12 said:

Have you checked the crankcase breathers aren't blocked? Also check that the oil separator is still present

Click to expand...

One of the breather pipes isn't quite long enough and has a slight kink in it and where is the oil seperator and what does it look like.

 

Kev12

Well-Known Member

Full Member

• Feb 25, 2018

• #11

Hopefully this will help you out

http://allbrit.de/epc.cfm?PAGE=G02185&CAR=L7&SPRACHE=EN

 

Kev12

Well-Known Member

Full Member

• Feb 25, 2018

• #12

Just got further down the page and this is right up your street https://www.landyzone.co.uk/land-rover/gems-v8-engine-re-breathe.327028/#post-4205457

 

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Duncanincapable

Active Member

• Feb 25, 2018

• #13

Kev12 said:

Just got further down the page and this is right up your street https://www.landyzone.co.uk/land-rover/gems-v8-engine-re-breathe.327028/#post-4205457

Click to expand...

Thanks I am assuming that the seperator lives inside the pipe and I am sure it doesn't have one (no suprise there) as an experiment disconnected both pipes and took it for a short run (to the shop to buy some fags) and the amount of smoke seemed to have diminished have ordered two lamda will fit them when they land and hope it is enough to get her through the mot.