hi, can any one shed some light on this, was out in my car today[been a warm day] and had a bit of race with a motor bike any how after 5min of this i noticed it was smoking a little[blue] and more so after costing for a little...but after ten min or normal draving its back to normall.

wat do you think it will be????

thanks for taking the time to look

 

Sounds to me that when the engine gets hotter a seal or something is letting oil past, probably your turbo on it's way out or could be valve stem oil seals or even piston rings, what's the history on your turbo ? Might need rebuilding if it's been used/ragged alot

 

hi thanks for the reply,,the turbo was new about 3000 miles ago..i was wondering if it may be vavle stems? is that possible if worn?

i have notice boost fluchuating (forgaive my spelling)

 

The boost fluctuation Could be a faulty actuator, the smoke could be the valve stem seals yes they went on my fiesta but it's a bit weird y yours seems to do it when the engine is hotter than normal (after a bit of abuse) then goes back to not smoking when driven normally. When the valve stem seals go they tend to leak oil when engine is cold because the rubber goes hard and gets softer with the heat, not 100% sure so wait and see if anyone with a bit more knowledge on that can tell you a bit more lol could even be your piston rings see try a compression test,
Also try and note how much oil you go through after say 200 miles

 

It's not weird at all, all Cossies drink a bit of oil, it's nothing new. Even on the early Cosworths the filler cap said something like "Check oil regularly" and i think in the handbooks it said "Carry a can of oil with you because it will need topping up every 500 miles" something along those lines.

 

drove to work this morning and no blue,, but its been much cooler today..
im goning to compression test it at the week end

 

Do you have an oil temperature / pressure gauge?

 

yep..oil press normaly 26-28psi at tick over when at nomal temp but was at 19 20 psi on sunday,
and is normaly about 80 but got to bout 100c,,

but its all back to normal today on way to work and on way back....

 

It could well be the start of stem seals on their way out, as you say the oil gets thinner the hotter it gets and can creep past the seals. I wouldn't worry too much about it just yet but it will probably get worse over time.

 

ok so iv compresion tested it today
cylinder 1, 10.5 bar 2, 10.5 bar 3, 10.5 bar 4, 10.2 bar,,

im thing valve stem seals! is there any way i can chage them with out taking head??

 

Yes they can be changed in situ, but may not be the stem seals, oil gets thinner with heat, thinner oil is used quicker, what grade oil are you using ?, if it has a few miles on it I'd be using a 60 weight like mobil 1 10W60 from matt lewis for example, or if not many miles a 50 weight would be ok, anything thinner and it drinks the stuff if on std(old) engine parts.
In the last 400 miles on my engine(new build) it has not used a drop, but I have a step gap seal in the turbo, as this is where a lot of the oil goes.
tabetha

 

bottom end has done aprox 26000 miles,, im useing 10/50 oil and my turbo has a staggered rear oil seal.
i have now fitted a oil cooler to see if this helps and although its no were ner as bad as it was it still doing it it a little.

does the compression sound about right?? the info i found said it should be 8.5 bar at cranking wide open throttle

 

ok since fitting a oil cooler smoke seen to have almost gone.
but tonight clucth started slipping upon opening the bonnet i found oil all around the back of the engine close to the breather why would this happen when my CP is 10.5 1 and 2 an 10.3 an 10.6 on number 4

help please

 

use thicker oil should be fine pal.

 

im useing 10w50 at the moment, just thinking wat if the breater valve on the inlet was to start letting boost thru would that cores this??

 

15/50 mobil 1

 

why would the 15 over the 10 make any diffrence??
prob being dence here