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.

[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

[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]

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

[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]

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, does that mean the 3.8 block is the same as the 3.5 AWD block? cheers

[mcs_xi]

Hi Spetz, does that mean the 3.8 block is the same as the 3.5 AWD block? cheers

They are not.

To fit any 3.5 or 3.8 block into an AWD a small part is ground off the block for transfer case clearance. This happens for all AWD cars

[DeanoTS]

They are not.

To fit any 3.5 or 3.8 block into an AWD a small part is ground off the block for transfer case clearance. This happens for all AWD cars

Ok cool thanks for clearing that up for me mcs_xi