Volvo RWD 120-130 Forum

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High RPM Smoking. 120-130

posted by  pearl on  Sun Oct 24 00:28 CST 2004
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last visit: Sun Jun 7 09:41 CST 2009
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Recently while going up the freeway at about 70 mph I notice a cloud of smoke coming out the back of my '68 122 with about 120k mile on it. It seems to otherwise run pretty good.
What are the likely causes of that cloud?
Thanks.








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    High RPM Smoking. 120-130

    posted by  someone claiming to be Derek UK on  Tue Oct 26 03:44 CST 2004 [RELATED]

    If you have a servo fitted it may be sucking through brake fluid which in turn get sucked into the intake manifold. Is it worse when you take your foot off the gas? Do you need to top up your brake fluid every few weeks? If you haven't checked it lately do it now. If you think it is the servo you can unbolt it and give it a shake to check for fluid.








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    High RPM Smoking. 120-130

    posted by  Bennie on  Sun Oct 24 02:17 CST 2004
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    last visit: Wed Nov 28 03:03 CST 2007
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    If it's white smoke it will be water/coolant. Probably a leaking headgasket (or maybe a cracked head). Is the coolant level dropping/changing?

    If it's black smoke you're buring too much gas. Too rich mixture. But then the car won't be running so well.

    If it's blue smoke, it's burned oil. Most likely caused by worn piston rings and/or cilinder walls. There might also be some oil leaking past the valve stems due to worn valve guides.

    Ben
    --
    P131, '65, B20B+M47. P131, '69, B20E+AW71L+LSD. (www.tinustechniek.tk)







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