Hi people

 

I have posted this problem a while back, but just want to be sure of the problem.

 

While coming on the gas, then coming off, above 3000rpm, no problem.

Below 3000rpm, i give it some gas then foot off for approx 2-5 secs, then the blue smoke starts to roll out, foot back on the gas, ooohhh my god!!! loads of the blue stuff, then its clear. As i said before, higher than 3000rpm, no smoke.

It's a TT, jap, 555 injectors, hks induction, hybrid tubs, de-cat, manual, boosting at 15psi.

 

Any ideas?

 

Cheers,

 

Alan

Oh no dude, looks like both of our cars decided to fail at the same time :( If you put your foot down and use the turbos does it smoke then? You will be able to tell as you stop because you will have tons of smoke coming out of the back.

 

But it sounds like Turbo seals :(

Oh no dude, looks like both of our cars decided to fail at the same time :( If you put your foot down and use the turbos does it smoke then? You will be able to tell as you stop because you will have tons of smoke coming out of the back.

 

But it sounds like Turbo seals :(

 

 

Hey murt,

 

going through the gears, hard or soft, i get no smoke at all, which leads me to think that the tubs and tub seals are fine. No smoke when i stop either. Must be engine related i think.

 

Cheers,

 

Alan.

PCV valves maybe

PCV valves maybe

 

Yea if you are getting no smoke going throu the gears then i would agree with snowy and say PCV valves

PCV valves maybe

 

Hey snowy,

 

Had them changed at Zworld about 3 weeks ago.

 

Cheers,

 

Alan.

take it back to zed world and see what they say, they'll be able to tell you straight away

take it back to zed world and see what they say, they'll be able to tell you straight away

 

It was happening before i took it to them, i thought the same as you, change the pcv valves and it might cure the problem, but it did not.

 

Cheers,

 

Alan.

hi peeps, i would in the early stage go through the gears no smoke until idle, then used to sit at traffic lights and get embarsed because of smoke,then i used to keep reves just over 2500 smoke gone ,as it turns out in the long run left bank turbo oil seal gone,

ps. i note you have decatted as well.

sounds like valve stem seals...let it idle for 5 mins in park then give it some revs,if it smokes it sounds like stem seals

sounds like valve stem seals...let it idle for 5 mins in park then give it some revs,if it smokes it sounds like stem seals

 

hey znut

 

am going to do a compression test later or tomorrow, will this confirm stem seals?

 

cheers

 

alan

hey znut

 

am going to do a compression test later or tomorrow, will this confirm stem seals?

 

cheers

 

alan

 

Compression should tell you whats worn, if you have low compression then add a drop of oil in the cylinder and the compression rises then its rings, if the compression stays the same then it will be a valve of some sort.

hey znut

 

am going to do a compression test later or tomorrow, will this confirm stem seals?

 

cheers

 

alan

 

Nope, I guess valve stem oil seals are quite hard to diagnose, apart from Znuts description. that's the only way i know of, oh and a puff of blue smoke on startup after leaving it overnight.

oh the valve seal. doh, nope you wont really be able to tell from a compression test :(

Nope, I guess valve stem oil seals are quite hard to diagnose, apart from Znuts description. that's the only way i know of, oh and a puff of blue smoke on startup after leaving it overnight.

 

hey dunk

 

on start up after leaving it overnight, there is no smoke, not even a puff.

 

going to do a comp test tomorrow, will let you know the outcome

 

cheers

 

alan

Compression should tell you whats worn, if you have low compression then add a drop of oil in the cylinder and the compression rises then its rings, if the compression stays the same then it will be a valve of some sort.

 

hey jim

 

so, i do a comp test on 1 cylinder if its low take out the tester, add some oil into the pot, replace the tester and spin it over again to see any difference.

 

is that correct?

 

cheers

 

alan

Yup add oil and re test.

 

It sounds like turbo oil seal though, when you accelerate you have enough back pressure and gasses to hold the oil in, on overrun you suck the oil out and you get clouds of blue smoke, try going ahhem a little faster than normal and see if you get smoke on overrun further up the range, it should be a lot less and will get worse as you get slower, an oil change with a thicker viscosity will probably lesson it in the very short term but it will be back to the same as soon as the oil starts to break down.

 

Mine has been getting worse and worse and I know its the tubs as I have completely ragged them and they were half shot when I put the engine in so ni complaints from me about having to pull it all back out again doohhh

Yup add oil and re test.

 

It sounds like turbo oil seal though, when you accelerate you have enough back pressure and gasses to hold the oil in, on overrun you suck the oil out and you get clouds of blue smoke, try going ahhem a little faster than normal and see if you get smoke on overrun further up the range, it should be a lot less and will get worse as you get slower, an oil change with a thicker viscosity will probably lesson it in the very short term but it will be back to the same as soon as the oil starts to break down.

 

Mine has been getting worse and worse and I know its the tubs as I have completely ragged them and they were half shot when I put the engine in so ni complaints from me about having to pull it all back out again doohhh

 

hey fry

 

i thought that when the tub seals are on the way out, it smokes through the complete range (under boost-pushing the oil through and vacuum-sucking the oil through) of revs.

also its been de-catted (no back pressure)

 

cheers

 

alan

All I can go if is the way my tub seals have gone, the oil change enabled me to go to a hill climb day and after spending hours thrashing the car it got worse and worse, symptoms are the same as yours, I will be pulling the engine to replace the turbo's, mine has new stem seals so its unlikely to be those at fault.

 

When I put the engine in I knew the tubs were on there way out and it has got gradually worse, if you want to wait 3 or 4 weeks I can tell you the outcome of replacing the turbo oil seals

All I can go if is the way my tub seals have gone, the oil change enabled me to go to a hill climb day and after spending hours thrashing the car it got worse and worse, symptoms are the same as yours, I will be pulling the engine to replace the turbo's, mine has new stem seals so its unlikely to be those at fault.

 

When I put the engine in I knew the tubs were on there way out and it has got gradually worse, if you want to wait 3 or 4 weeks I can tell you the outcome of replacing the turbo oil seals

 

 

sounds good to me!!!

 

let me know if it made a difference, as i do not want to change the stem seals then have to pull the engine to change the tub seals. want to get it right first time.

 

cheers mate

 

alan

Does not sound like the turbo's but more a engine problem. Mine did this for some time, thought it was the turbo's but then lost 2 cylinders. Turbos were fine.

Does not sound like the turbo's but more a engine problem. Mine did this for some time, thought it was the turbo's but then lost 2 cylinders. Turbos were fine.

 

hey mrogers

 

what work did you have to get done when you dropped the 2 cylinders?

did it cost much to repair/replace?

 

cheers mate,

 

alan.

 

p.s. doing a comp test in a few mins, will let you know the results.

Check if there is smoke from the dipstick tube. Does it ever blow the dipstick out?

Check if there is smoke from the dipstick tube. Does it ever blow the dipstick out?

 

i have just done a comp test and figures are:

 

148 148

152 132

162 132

 

"front of car"

 

started it up after and, yes puffed some smoke.

also i have noticed that the dipstick is being pushed out, but only ver slightly.

 

alan

i have just done a comp test and figures are:

 

148 148

152 132

162 132

 

"front of car"

 

started it up after and, yes puffed some smoke.

also i have noticed that the dipstick is being pushed out, but only ver slightly.

 

alan

 

Check for any smoke from the dipstick and oil cap with engine running. Did you do a wet test on the two 130 cylinders ? , just a few drops of oil to see if it rises.

Check for any smoke from the dipstick and oil cap with engine running. Did you do a wet test on the two 130 cylinders ? , just a few drops of oil to see if it rises.

 

 

hey legrath

 

no, forgot to do the wet test.

will check to see if i get smoke from the dipstick on oil cap

 

alan

 

edit: no smoke from the dipstick and no smoke from the oil cap with the engine running.