heat wraped fmic pipes/decat and random smoking/condensation

S

superspat

Member +
i have just fitted a new hybrid ct9, heat wrapped my fmic pipes and decat pipe, i have noticed that it randomly smokes some times, been told it blue smoke and its normlay when on boost and when comin gof the throttle, it will every now and then smoke a bit when sat at idle then pull away get a cloud come out and dumping out the bov, wen its cold and give it a bit of thottle loads of black water spits out the exhaust and covers the bumper.
i have checked the intercooler pipes, the inlet is oil free as is the inlet housing of the turbo, took the decat of and it was oil free same with the exhaust side of the turbo, the decat did have water in it tho, kinda like condensation bubbles.
check the pvc valve and thats working as it should, it dose not use water or oil or none that is noticble in a short amout of time and the temp gauge sits at the same place every time and dont move.
could the heat wrapped fmic pipe work and decat cause condensation in the pipe work and cause it to smoke, as its only started doing it since i fitted my new hybrid?
before any asks no have not done a compression test yet gonna get 1 done in the week, but is it best to do with a heated up engine or a stone cold engine?
 
J

Joelean

Member +
Hey man, new heat wrap will smoke abit but its normally White smells like biscuits. An obviously if it gets damp it's gonna smoke a little till any water is burnt off. The blue smoke sounds more like the exhaust side oil seals in the turbo how old is the turbo?
 
S

superspat

Member +
turbo has done around 100miles since new as only fitted it last week , had the decat of this afternoon and there is no sign of oil in the turbo or decat, i was thinking it was the exhaust side of turbo but its bone dry, just very black and the turbo spins freely and no play at all
 
J

Joelean

Member +
That's odd, you seen blue smoke for yourself? The turbo was primed up when you put it on? What you using for fueling? As black smoke is gonna be a rich mixture an not oil burning through? Just a thought?
 
S

superspat

Member +
Yea i have seen it smoking myself but i think its more white when sat on idel and got tinted read windows which makes it hard to see properly. Yea turbo was primed before car being started. Only running 0.7bar intill i get my emb mapped and new clutch fitted so i dont think its burning fuel
 
P

Paul_JJ

Member +
TO do the compression test - Working on a warm engine with a fully charged battery, disable the fuel system, isolate the ignition circuit and remove the spark plugs -)

How about engine burning oil? The seals are on the way probably. If it was the turbo seals you would have noticed some oil in the intercooler piping.
 
S

superspat

Member +
i didnt realise u had to disable the fuel i.e pull fuel pump fuse as never done that before, but thats my plan for tonight is a compression test, there is no excess oil in pipe work but the bov is dumping a light film of oil on the underside of the bonet, it ony dose it when on full boost give it some tho normal driving a light boost no smoke
 
S

superspat

Member +
done a compression test to day on a warm engine and every cylinder was exactly 151, i check each 1 3 times as didnt belive the reading but it was correct and exactly the same on each cylinder, not sure what the compression is ment to be guessing as they are all the same it must be ok, i did notice that the spark plug on the cylinder closest to the passanger side ( 4 i think) was a diff colour, the rest looks like it was running rich and the 4th was slightly lean, would this cause it to smoke? for my pice of mind gonna get the turbo of next week and back to turbo shop to check it. but now compleaty stumped, gonna do a test on a could engine to see if the results are any diffrent
 
S

superspat

Member +
any 1 have an idea of what it could be, i have noticed that when starting from cold, there is no smoke intill warmed up, blip the throttle and out comes the smoke and kinda clears while driving hard, but after driving of boost then boost again it dumps a load of smoke again, how much would i be looking at to get the valve stem seals done at a garage and how much is it likly to cost, gonna get turob of when i got a spaire day but i really dont think its the turbo that causing the smoke, or am i wrong
 
Texx

Texx

Super Moderator
Assuming the PCV breather is no longer routed back into the inlet before the turbo, oil blown out of the BOV can't really come from anywhere other than the seals on the compressor side of the turbo.
 
S

superspat

Member +
the pvc breather is now venting to atmos. thats what i thought but the turbo is brand new and done under 100 miles, there is no oil in the turbo to fmic pipe work but there is a bit in the fmic to throttle body pipe and coming out of the dump valve gonna get it off and back to turbo shop me thinks now
 
S

superspat

Member +
true. they company that built it have built me a few in the past and never any probs but will get it of and get it check out by them
 
S

superspat

Member +
took the turbo, the tested it and there was sings of oil leaking any were, the striped it apart and check the shaft, replaced the piston rings and tested it again and the turbo is 100% spot on and not the cause of the smoke. has any 1 got any othere ideas of were else to look, as its still smoking and dumping oil out the bov, could there be a breather problem in the crank case even tho the pvc valve is wroking and not broke and the other breather is venting to atmos.
i checked the plugs and leads and noticed that on cylinder 3 the plug was white/lean and all the other 3 were black/rich, could this be the cause, getting new plugs and ht leads for it but cant see how this would cause a load of smoke really
any more help as starting to do my head in as it dont effect the way the car drives in any way.
 
You must log in or register to reply here.
Top