Anyway to reduce exhaust smoke

[DeanoTS]

Hi all, I bought a KJ AWD Verada a week ago and I think the valve stem seals are pretty warn, it only has 223,000 k's which is ok for its age, but its very fumey, if it idles for 5 minutes then I give it a rev a bush fire comes out the exhaust, LOL, I did flush the motor and put HPR10 in it but didn't help much, can anyone recommend a good additive or an oil to help reduce this? also is the AWD motor any different to the FWD ? or can they be swap easy? cheers

[leadfoot6]

It seems that you have probably carried out as much "band aid" fixing as possible.

I did a search(very easy to do), using "valve stem seals aussiemagna" as the search term:

https://www.google.com/search?q=valv...w=1164&bih=594

and found some advice from "Madmagna" which suggests that you have done most of the required steps.

It is stem seals, Max, on a second gen yes they are known to do this but this is a third gen.....

I have seen a few high mileage third gens to this but have also seen some lower mileage ones using Magnatec oil do this, one in particular with only 140k on it was doing the same thing, we gave it a good engine flush and then used Penrite, 95% of this smoke stopped as did most of the oil consumption

The tube seals will not cause excessive oil useage unles they are so bad they are leaking out of the plug tubes over the top of the motor. The leaking tube seals also will not cause smoke.

I would get some of the Wynns Oil System cleaner, the good workshop grade stuff, and then put it in, idle the engine at least 30 mins (DONT DRIVE IT) and then give it a good hot drain, put some HPR10 in and see how that pans out

https://www.aussiemagna.com/forums/sh...=1#post1438658

Good Luck.

[Spetz]

You should monitor your oil usage to get an idea of how many km to a litre of oil.

I ended up doing a DIY valve stem replacement on my 6G74. about 60,000km ago. It still uses no noticeable oil between 10,000km oil changes.
At the time I was far less mechanically capable and though it took me a very long time, in retrospect if you know what you're doing it isn't a particularly hard job.


And yes, the FWD and AWD blocks are slightly different. I believe to accommodate some AWD gear.
But people do install 6G75 motors into AWD cars.

[DeanoTS]

It seems that you have probably carried out as much "band aid" fixing as possible.

I did a search(very easy to do), using "valve stem seals aussiemagna" as the search term:

https://www.google.com/search?q=valv...w=1164&bih=594

and found some advice from "Madmagna" which suggests that you have done most of the required steps.



https://www.aussiemagna.com/forums/sh...=1#post1438658

Good Luck.

Hi leadfoot, thank you for your reply, much appreciated, cheers

[DeanoTS]

You should monitor your oil usage to get an idea of how many km to a litre of oil.

I ended up doing a DIY valve stem replacement on my 6G74. about 60,000km ago. It still uses no noticeable oil between 10,000km oil changes.
At the time I was far less mechanically capable and though it took me a very long time, in retrospect if you know what you're doing it isn't a particularly hard job.


And yes, the FWD and AWD blocks are slightly different. I believe to accommodate some AWD gear.
But people do install 6G75 motors into AWD cars.

Hi Spetz, thank you for your reply, I'm not game to try to replace the valve stem seals, I had one go at it on my old KH and gave up and just put it back together, I found there was hardly any room to fit the tool to compress the valve springs and just gave up on it. The car is unregistered at the moment so I haven't been able to take it for a good drive to clear out all the old oil that might still be still sitting around the valves, its only a second car so I might just put super thick oil in it if its still blowing smoke after I get it registered. Cheers

[mcs_xi]

Hi Spetz, thank you for your reply, I'm not game to try to replace the valve stem seals, I had one go at it on my old KH and gave up and just put it back together, I found there was hardly any room to fit the tool to compress the valve springs and just gave up on it. The car is unregistered at the moment so I haven't been able to take it for a good drive to clear out all the old oil that might still be still sitting around the valves, its only a second car so I might just put super thick oil in it if its still blowing smoke after I get it registered. Cheers

I had 330,000 on my TF with its original motor and it would consume a little oil over time. I had nothing to lose as the car was a great cheap test bed and simply tried some Stop Leak from whynns in it and it worked really well.

I also use HPR-10 with an oil flush as mentioned above and this pretty much solved the issue.

Mike

[Spetz]

At the time I did the valve stem seals on my KJ2 I was (as mentioned) not very mechanically savvy and tool also didn't work for me.
So what I ended up doing was compressing the springs in a c-clamp and then using those metal zipties to keep them compressed.
Once I put them in their place and the collets & retainers secured, I cut the metal ziptie.
It was very, very tedious.

I then ended up replacing valve stem seals on an FTO motor, this time more mechanically savvy and had more tools. It wasn't so bad, and if you have a helping hand it actually quite easy.
I used a different spring compressor which should fit the 6G74 which worked a treat (pictured below).

Even though I think it isn't too bad a job, you would only do it if you looked forward to and enjoyed the experience of working on the car. Otherwise I do not recommend this task.

[DeanoTS]

I had 330,000 on my TF with its original motor and it would consume a little oil over time. I had nothing to lose as the car was a great cheap test bed and simply tried some Stop Leak from whynns in it and it worked really well.

I also use HPR-10 with an oil flush as mentioned above and this pretty much solved the issue.

Mike

Hi Mike, thanks for the reply, I did flush the motor and used HPR10, I think the car has been a bit neglected, I will have to try the Wynns stop leak , cheers Dean

[DeanoTS]

Hi all, just an update on my smoking problem, LOL, I have started to replace the valve cover gaskets and tube seals as the car has oil leaks, I pulled the plugs out of the front bank and they all were pretty clean (no carbon build up) but when I pulled all 3 out of the rear bank they were a bit carboned up, not serious but not as clean as front bank plugs, anyone know what can cause this? maybe this is the cause of the smoke. I noticed the hose that connects the valve covers had oil in it. The valve covers will be getting a thorough clean and the hoses will be replaced, so maybe this may help the smoking problems, I soon will find out. Cheers

[WytWun]

Check the purge control valve for blockage.