anyone know what can cause smoke after lettin off the throttle ? no smoke on start-up, idle or on throttle. just when you let off and theres a fair bit. any ideas ?
smoke...
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#2I would suggest checking your dipstick just make sure it ent white.....if i is Possible head gasket gone. .....or possible just give your idle control valve a clean
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#3Blue smoke? Valve stem oil seals is what my money is on.
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#4cheers for the reply. has only just had the HG done and the head fully rebuilt. if anything its more an burnt oil smoke
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#5LeeumH is right. The smoke colour is diagnostic.
BLUE = oil
White = coolant
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#6I'd be very surprised if they didn't renew the valve stem oil seals - they're only a few pence each. Might be worth checking with the garage who did the work.
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#7works been done myself and its had the stem seals replaced.
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#8Ah right. You confident the seals didn't get damaged whilst fitting?
I'd try and find out the colour of the smoke.
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#9You could try looking at the spark plugs for one that is contaminated with oil - that will help you to prove which valve stem seal may be suspect.
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#10its deffinatly oil not coolant. comes round the front of the car
seem wierd how it only does it after throttle. stem seals would cause smoke on start up becuase it leaks onto the valves but theres nothing.
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#11On overrun with throttle closed there is quite a vacuum (less pressure than atmoshpehre) in the inlet and that vacuum will be pulling oil down past the valve stem seals.
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#12if thats what it is, is there a cure for this ?
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#13when i had my new head casket fitted my my saxo westcoast, for about 2,000 miles i had some smoke but it burns it self of and then its fine fella
