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[feeutfo]

not happy, just finished cam cover gaskets. While it was all apart took a peak down the inlet on all pots, all looked ok except pot 6, burnt oil on the valve back and what looks like a spray on the port wall in the forground of the pic. Valve stem seal gone i take  it...?

lower pick is just for comparisson on pot 2, all other pots looked as this, who knows what the exhaust valves look like.

Checked plugs while i was there and all have a nice light tan colour including pot 6 which looked exactly the same as the other plugs.

I have noticed the car is using more oil since lpg was installed, coincedence? now expecting pre cat code on that bank although i've been expecting that for a while....











Question is whats involved with changeing valve stem seals, assuming thats the problem


Just wish i had looked down the inlet before i pulled the cam covers off, all got to be done again now to sort this out 


cheers

Chris 

[Andy B]

Apart from removing cylinders heads  :-? it can be done in situ if you can find a way of compressing the valve springs so you can remove the collets. If you feed cord into the bores with the piston down & then carefully lift the piston, that will stop the valve from falling into the cylinder when the collets are removed. I'm not sure what is available for the V6 to be able to compress the spring in a controlled manner. Specific tools are available for some engine types for valve stem seals to be done when the heads are still in place.

[tunnie]

top end head re-build for valve seals is it not?   

If LPG was havving an affect on them, would it not bugger them all?  :-/

[JamesV6CDX]

LPG won't affect the stem seals

How much oil are we talking? Might be best to leave it be, if it's minimal 

[feeutfo]

2 marks on the dipper in the last month.....so whats that?.....point 4 of a litre???

[JamesV6CDX]

Chris,

Firstly check for blue smoke when started in the morning

Secondly (warm engine) check for blue smoke with a hard rev, after 5 minutes idling

Let us know the results

Just seen, yours is a 3.2, so may have the dodgey seals in

[tunnie]

2 marks on the dipper in the last month.....so whats that?.....point 4 of a litre???

Have you been booting it more since going to LPG?

If i keep my 2.2 sub 85mph on the motorway, it uses no oil what so ever. Cruise at 90+ and it starts using the amounts you describe.

[feeutfo]

2 marks on the dipper in the last month.....so whats that?.....point 4 of a litre???

Have you been booting it more since going to LPG?

If i keep my 2.2 sub 85mph on the motorway, it uses no oil what so ever. Cruise at 90+ and it starts using the amounts you describe.

no, the opposite in fact, i try to keep it to 80 these days, trying to get more miles per tank used to regularly top the t** as i work shifts. Empty ish roads at 5am.

[feeutfo]

Chris,

Firstly check for blue smoke when started in the morning

Secondly (warm engine) check for blue smoke with a hard rev, after 5 minutes idling

Let us know the results

Just seen, yours is a 3.2, so may have the dodgey seals in

re dodgy seals, iirc my car is after the dodgy batch. 52 plate 03 car

[feeutfo]

just to add, i checked the inlet ports in the exact same manor when i fitted the lpg, so no issue in April.

[Andy H]

just to add, i checked the inlet ports in the exact same manor when i fitted the lpg, so no issue in April.

It seems odd to me that the stain appears higher up the inlet port than the valve :-/ the oil deposits on the back of the valve look convincing though....

Is no 6 the first injector after the evaporator? Is there any way that oil / grease from the tank (or contamination in the LPG) could be causing it?

[Marks DTM Calib]

How were the breathers?

To be honest, that looks like bugger all!

[feeutfo]

How were the breathers?

To be honest, that looks like bugger all!

...tfft.

breathers where not blocked, some white  brown mayo in the eco tec bit, breather pipes to breather box where mint, brass bit with hole in was perfecty clean, still brass coloured


OH yes, some oil running out of the throttlle body, black platic inlet tubes had oil in them....

[Marks DTM Calib]

How were the breathers?

To be honest, that looks like bugger all!

...tfft.

breathers where not blocked, some white  brown mayo in the eco tec bit, breather pipes to breather box where mint, brass bit with hole in was perfecty clean, still brass coloured


OH yes, some oil running out of the throttlle body, black platic inlet tubes had oil in them....

Did you poke anything into the brass hole?

It sounds a bit like the small drilling is a bit blocked

[feeutfo]

How were the breathers?

To be honest, that looks like bugger all!

...tfft.

breathers where not blocked, some white  brown mayo in the eco tec bit, breather pipes to breather box where mint, brass bit with hole in was perfecty clean, still brass coloured


OH yes, some oil running out of the throttlle body, black platic inlet tubes had oil in them....

Did you poke anything into the brass hole?

It sounds a bit like the small drilling is a bit blocked

Yep, paper clip, all the way in, seemed clear.

I did think about taking the breather box off, but the clearnes, weather, access, and the fact i could see grey goo up the sides of the box itself made me think better of it.