Jump to content
SAU Community

Recommended Posts

Hi guys and girls!

I have a Metal Cat installed more than 24 months ago. Recently i have been having whitish/grey smoke coming out of my exhaust. Mechanic says it might be some engine oil going into my engine after a session at AHG skidpad(i do not have a oil catch can before was told the reservior on the rocker cover should be sufficient enough). There shouldnt be a problem with the turbo seals as it is a Brand new unit from HKS. The car has been backfiring once in a while.

Whitish/grey smoke was also thought to be condensation but i dont think so cause the car has been driven for more than an hour on the road.

This only happen when i hit full boost! On idle it doenst happen. SO please do help me. I am having tons of problems with the car, all i have done is put good parts and proper mantainance into the car.

SO my question is: Are this the symptoms of a failing CAT?? Does it cause greyish/ whitish smoke to come out of your exhaust?

Link to comment
https://www.sau.com.au/forums/topic/263107-metal-cat/
Share on other sites

Whitish smoke normally due to Condensation in the exhaust but how can this be happening after an hour of driving in a 28 degrees day? Shouldnt all the "water" in the exhaust be gone by now :blink: ?

WHitish smoke can also be cause by engine oil or coolant if i am not mistaken. The tuner and mechanic isnt worried about it because the still reckon its condensation in the exhaust. They have taken the car for a drive and there was another car folowing from behind, all they say was ITS MORE GREY THAN WHITE :D . I am putting all my trust in them as they are one of the most reputable tuner/shop in Perth :D .

The whitish/greyish smoke only blows out when i hit 16psi on most gears!

Link to comment
https://www.sau.com.au/forums/topic/263107-metal-cat/#findComment-4504860
Share on other sites

white smoke on boost means there is a seal that is not working properly - the 3 usual suspects are turbo (water or oil seal), head gasket (oil into the combustion chamber), or leaking from the plenum water galley into the head.

Link to comment
https://www.sau.com.au/forums/topic/263107-metal-cat/#findComment-4504915
Share on other sites

Whitish smoke normally due to Condensation in the exhaust but how can this be happening after an hour of driving in a 28 degrees day? Shouldnt all the "water" in the exhaust be gone by now :( ?

Correct - its not water/condensation. That will all boil off even before you cars fully up to temp.

WHitish smoke can also be cause by engine oil or coolant if i am not mistaken. The tuner and mechanic isnt worried about it because the still reckon its condensation in the exhaust. They have taken the car for a drive and there was another car folowing from behind, all they say was ITS MORE GREY THAN WHITE :ermm: . I am putting all my trust in them as they are one of the most reputable tuner/shop in Perth :happy: .

The whitish/greyish smoke only blows out when i hit 16psi on most gears!

My guess is oil - what does the dipstick say?

Dead cat = black smoke.

Link to comment
https://www.sau.com.au/forums/topic/263107-metal-cat/#findComment-4505170
Share on other sites

i just re-read my post. its usually water in the combustion chamber that causes white smoke. burnt oil is usually blue.

What causes the water to go into the combustion chamber??

And why doesnt the whitish/greyish smoke comes out during idling. If theres water shouldnt there be constant smoke coming out :O ?? DOenst the water recirculated when it is idling?

The oil level was check regularly, it seems fine.... and the oil pressure on the dash all seems normal.

Just came back from a drive, got my missus to drive it while i follow her around.

The smoke smells more like something is burning.... Smells like weed :D .... Nah just joking. IT smells like something is burning. Doesnt smell like running too rich (petrol smell)

Link to comment
https://www.sau.com.au/forums/topic/263107-metal-cat/#findComment-4505647
Share on other sites

What causes the water to go into the combustion chamber??

And why doesnt the whitish/greyish smoke comes out during idling. If theres water shouldnt there be constant smoke coming out ;) ?? DOenst the water recirculated when it is idling?

The oil level was check regularly, it seems fine.... and the oil pressure on the dash all seems normal.

Just came back from a drive, got my missus to drive it while i follow her around.

The smoke smells more like something is burning.... Smells like weed :( .... Nah just joking. IT smells like something is burning. Doesnt smell like running too rich (petrol smell)

i covered that.

white smoke on boost means there is a seal that is not working properly - the 3 usual suspects are turbo (water or oil seal), head gasket (oil into the combustion chamber), or leaking from the plenum water galley into the head.

from what i can gather it sounds like you're smelling burnt oil. find out where its coming from. check the following:

- the lowest point on the hot side of your cooler piping,

- radiator for milky residue under the cap and

- your intake pipe.

if it is actually oil then there will be traces there. if not then at least we can rule that out.

Link to comment
https://www.sau.com.au/forums/topic/263107-metal-cat/#findComment-4512821
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Yep, the closest base tune available was for the GTT, I went with that and made all the logical changes I could find to convert it to Naturally Aspirated. It will rev fine in Neutral to redline but it will be cutting nearly 50% fuel the whole way.  If I let it tune the fuel map to start with that much less fuel it wont run right and has a hard time applying corrections.  These 50% cuts are with a fuel map already about half of what the GTT tune had.  I was having a whole lot of bogging when applying any throttle but seem to have fixed that for no load situations with very aggressive transient throttle settings. I made the corrections to my injectors with data I found for them online, FBCJC100 flowing 306cc.  I'll have to look to see if I can find the Cam section. I have the Bosch 4.9 from Haltech. My manifold pressure when watching it live is always in -5.9 psi/inHg
    • Hi My Tokico BM50 Brake master cylinder has a leak from the hole between the two outlets (M10x1) for brake pipes, I have attached a photo. Can anyone tell me what that hole is and what has failed to allow brake fluid to escape from it, I have looked on line and asked questions on UK forums but can not find the answer, if anyone can enlighten me I would be most grateful.
    • It will be a software setting. I don't believe many on here ever used AEM. And they're now a discontinued product,that's really hard to find any easy answers on. If it were Link or Haltech, someone would be able to just send you a ECU file though.
    • Yes sir am asking is there possible way from aem tuner from wiring pins 
    • Have you checked cam to crank timing and confirmed balancer marks are correct?
×
×
  • Create New...