still trying to get to the bottom of my smoking problem on the zed, it only does it from the drivers exhaust, on tick over and when the car is warm, can get quite bad if ticking over for a while, i've replaced both pcv valves and pipes with silicone and did a oil change 2/3 weeks ago as oil was pretty thin and dirty, turbos were also replaced around 4 years ago(car has done 8000 miles since), never had any probs with dipstick being blown out or oil in the intake pipes but before i did pcv valves passenger pcv valve was oiled up quite bad and was quite a oily mess when the pipe was removed smoke however does look blue as oil burning, it never effected emissions on mot and usually clears after revving the engine up a couple of times then may take 5 mins or so to come back again really running out of ideas now short of engine out any ideas anyone?

Have you done the over-run test to rule out rings?

 

Alz.

i havn't as such but dont tend to boot the zed a lot round here anyway (that plus i'm to tight to put in to much petrol lol) but a lot of the time round here it's on over run as it's quite hilly nothing whilst on over run but the smoking does start when i pull up at traffic lights etc but not straight away usually 1 or 2 mins after i stop if on traffic lights

Sounds like it could be either rings (maybe just 1 or 2) or valve guides. Deffo not tubs, as it would be full throttle. Have done a compression test, both wet and dry?

 

Alz.

not yet that will prob be next on my list now, was hoping it wasn't rings to be honest, but last weekend i used the zed same roads same driving style never smoked once, then today it started again, humour me on this as oil was thin dirty when i changed it a couple of weeks ago is it possible some of it could still be in the pcv pipework? only throwing this idea into the pot as i've only done 50ish miles since the oil change, pretty sure i've clocked up over 500 since pcv change but not 100% sure on that

Do the comp test matey, just to rule out the rings and valves. Have you got a comp tester? If not i can send you mine and return it when you have finished.

 

Alz.

i havn't got one here will prob invest in one myself even though i have worked on cars for years never done comp testing before

Very cheap to buy, halfrauds do them buddy. Worth doing matey, just for peace of mind.

 

Alz.

yes even better we have a large tool supplier opposite my shop and i've known the owner for years so should be able to get a good price off him

still trying to get to the bottom of my smoking problem on the zed, it only does it from the drivers exhaust, on tick over and when the car is warm, can get quite bad if ticking over for a while, i've replaced both pcv valves and pipes with silicone and did a oil change 2/3 weeks ago as oil was pretty thin and dirty, turbos were also replaced around 4 years ago(car has done 8000 miles since), never had any probs with dipstick being blown out or oil in the intake pipes but before i did pcv valves passenger pcv valve was oiled up quite bad and was quite a oily mess when the pipe was removed smoke however does look blue as oil burning, it never effected emissions on mot and usually clears after revving the engine up a couple of times then may take 5 mins or so to come back again really running out of ideas now short of engine out any ideas anyone?

 

Turbo for sure,seen and heard of a few re furbed tubs that only lasted a few years.

thats damn shite then turbos were new as far as i know the guy paid close to a grand for the turbos alone, also had cluth etc done few other bits and his bill was £2750 only 4 years/8000 miles ago but turbo seals wouldnt cause oil to be pushed/sucked into the pcv pipes would they?

how many miles have you done since you done the PCV valves? Mine took about 700 miles to clear the smoke on idle. 8000 miles for new turbos seems low to me!

how many miles have you done since you done the PCV valves? Mine took about 700 miles to clear the smoke on idle. 8000 miles for new turbos seems low to me!

 

not 100% sure dave never took miliage at the time i did them (Doh), but my thoughts exactly on the turbos even if recon they must of been pretty badly done to fail after 8000 miles, (and it was pointed out to me on here the £950 they guy paid was about right for new stock turbos) only other thought was oil was thin and dirty before i changed so could be some of that still in the breather system maybe as it seemed to get getting oiled up in the passenger side pcv valve

mine took ages to clear but did clear and i have not had a problem since. I would of thought you would have smoke on boost if you had turbo fault. i found if you had the air con on it would rase the revs slightly and stop the smoke.

thats wht mines doing and it does not smoke everytime i used the zed 2 days last week and it never smoked but used it today and it did yet all 3 times were the same journey same driving style, i would of thought turbo's/rings etc it would be all the time, i am going to do a compression test just for peace of mind then take it from there, i have reset the trip counter so i will know when i've done another 500miles to sus wether it is still from pcv's or not