While messing about with my car today I noticed White/grey smoke coming out of her, i've not noticed it before I've had a few puffs if I nail it but that's all. The only work I've done was I changed the fuel reg (second hand) as it was leaking.

Does it sound like PCV valves or somthing else???

Any ideas ?

Its probably not related to the fuel regulator at all and just a coincidence.

Is it a lot of smoke, sure it wasn't just condensation from a cold engine??

 

Don't jump to any nasty conclusions just yet, drive the car more and report back on the problem with more information.

Does it do it at cold idle or hot idle? Does it smoke on overrun or hard boost? From one or both tail pipes (if both do you have a H/X sytem or 2 separates exhaust runs?).

Does it smell like burning oil? Using any?

Check water levels, any gunk on underside of oil filler cap?

 

Like I said more information req'd, don't panic yet though!

I was playing about with scantech just seeing what it can do so it was on idle for a while,

so it was when I was testing the O2 sensors and held the rpm at 2grand then let off the smoke went past the window, as I said I've had the odd puff when I nail it hard.

She hasn't used a drop off water or lack power or misfire, also I have an x system so it came from both sides, no gunk or funny smells?

I hoping it was from just where I was playing about at idle doing tests ?

Personally I wouldn't worry about it just yet, just drive the car and see if the problem develops.

If you start getting regular smokey tail pipes when stuck in traffic at idle then further investigation is needed.

It sounds like the early signs of worn turbo seals (sorry!), but the smoke is normally very smelly.

Just drive it normally and keep an eye out for smoke and note the conditions it does it.

I have this problem as the moment (smoke at hot idle+odd puff when booted) and I believe it to be my turbo seal. (smoke only from one bank, but have separate exhaust runs).

As a precautionary measure, you could change the PCVs and hoses as this can cause a smoking problem, I did, but no cure. It is a cheap 1st option to chance on though.

Search some of my recent posts if you like for other ideas and comments on this problem.

Edited August 15, 201016 yr by turbocraigy

Personally I wouldn't worry about it just yet, just drive the car and see if the problem develops.

If you start getting regular smokey tail pipes when stuck in traffic at idle then further investigation is needed.

It sounds like the early signs of worn turbo seals (sorry!), but the smoke is normally very smelly.

Just drive it normally and keep an eye out for smoke and note the conditions it does it.

I have this problem as the moment (smoke at hot idle+odd puff when booted) and I believe it to be my turbo seal. (smoke only from one bank, but have separate exhaust runs).

As a precautionary measure, you could change the PCVs and hoses as this can cause a smoking problem, I did, but no cure. It is a cheap 1st option to chance on though.

Search some of my recent posts if you like for other ideas and comments on this problem.

 

cheers mate, but as by magic today their is no smoke at all ! but i think i will change the pcvs, what they like to do???

Be sure to change the 4 hoses (the 5th one at the back is not too critical) as well and ensure you get UK/Jspec ones and not US spec.

 

Read this thread for more info...

 

http://www.300zx.co.uk/forums/showthread.php?t=114553&highlight=PCV+question

 

I really hope you don't have a problem, but all too often these things don't just fix themselves. It may return.

Good luck...:)

I really