Question about 1999 Suzuki Vitara

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1994 Suzuki Vitara V6 H20A Engine smoking intermittently from exhaust

My Suzuki will Intermittently billow large amounts of smoke from the exhaust for a period of time and then for no apparent reason will stop doing it and run for days with no problems. Any suggestions please

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  • cookn1 Aug 16, 2008

    same and seem to have lots of oil in the intake manifold

  • yachtaria2 Sep 27, 2008

    I have the same problem in a daihatsu mira, huge smoke for about 45 seconds then nothing for 10 minutes or so. It seems to only happen on the open road,not around town

  • Anonymous Dec 13, 2008

    Mine too , no compression failure, new valve seals , still smoke in the mornıngs for 5 sec , and normal then , lots of oil in the intake manifold.

  • clobby Feb 09, 2009

    You were so right. the oil is being sucked into the intake manifold via the PCV Valve and hose. I have dis connected the hose and plugged the intake manifold end and the problem has gone. Super cheap have oil catch cans and I am going to instal one of these to llow the re connection of the PCV valve to the intake manifold and am sure that it will collect any oil that enters the line. It may interest you that with the pipe dis connected the pcv valve is not seeping any oil so it must be just the engine vacuum that is drawing the oil in from the tappet covers. Many thanks for all your help and hope the solution will help others with a similar problem on this engine type

  • dianneandsid May 25, 2009

    I have the same problem have the oil catch can -next problem is How do fit it and where?? My vitara is a 1995 SV6

  • Robert Dunlap May 11, 2010

    what color is the smoke white, blue or black?

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I have a Mazda which in Australia (here) is called a 323 Astina, overseas a 323f, Familia, etc.
It uses a 2.0L Mazda KF Engine very similar to (in fact co-developed with) the Suzuki H20A engine, except designed to be transverse, variable resonance induction and other different tuning inc. 7000 redline, and probably not as reliable as an H20A.
I've had the engine rebuilt because I want to keep this car for a while and it needed it. Oil slipped past the rings which burned out grooves on one of the exhaust valves on Cyl-6 to the point where that cylinder had no compression...
... but I still get smoke occasionally, as you describe yours except not as often nor on the open road at speed. It happened ever since the first time I changed the oil after the rebuild. The tech who rebuilt it used a grade of oil I couldn't find and, liking synthetics, I used a lighter oil.
About the time you were writing your message, I replaced the rubber intake pipe feeding the throttle body and I noticed the inside of the intake manifold lined liberally with oil. The old pipe had oil only at one end.
The pipe I replaced didn't just go from the air mass sensor on the filter box to the throttle body. There was also a large pipe to an air reservoir (a lengthy pipe sealed at one end so that if you open the throttle quickly, you don't have to wait for more air to be filtered before it enters the engine, supposedly) and a tiny pipe to PCV valve.
It's not a long pipe so it's easy to look inside. The reason I'm boring you with all of that detail is because you'll almost certainly have a different one, but this is still most probably something you'll find feeding your intake manifold a supply of oil. The PCV (Positive Crankcase Ventilation) valve runs from one of the rocker covers (not that we have rockers) into a pipe feeding into this intake pipe. It's supposed to **** air in from the intake pipe due to a vacuum created by another pipe connecting from another part of the crankcase to the intake manifold (after the throttle body so it has a lower pressure than the intake pipe) and that might be happening in my engine but oil is, or was before the rebuild, seeping back into the intake pipe.
Being a transverse version of your engine, the PCV valve is on the front bank and the pipe from it to the intake pipe is quite short. The PCV valve is also situated above (if I remember correctly) a cam lobe so at higher revs, the oil gets flicked up into the PCV valve.
... so use an oil which is thicker at high temperature, do a compression test, or as I'm considering, run the pipe from the PCV valve into a canister to catch the oil before feeding the gasses into the intake manifold. That way less of the thinner oil will be burned off and I'll have a better chance at getting away with using it.
I use 15W40 Oil - viscosity of 15 weight (units?) when hot, 40 in Winter (which the W stands for). I should use 20Wxx, perhaps, to burn less oil.
This engine likes thin oil, it just goes on to liking it enough to inhale it. This engine also likes higher revs.
Hope that helps.

Posted on Feb 09, 2009

  • madmadmacs Feb 17, 2009

    Glad to hear it, Clobby, and thank you for letting me know.


    ... It's the engine vacuum, I'd have thought so but I'm grateful to you for confirming that. I checked before writing my (lengthy, sorry) comment. It seems nothing at all would flow through the PCV channel unless both pipes (one on either side of the throttle body / butterfly) were connected and there's a pressure differential (eg. the throttle's not completely open).


    Thanks also to Yachtaria2 for your advise. The dipstick in the Mazda engine is very difficult to read and I doubt I'd be able to be that precise. I found with my last sort-of Mazda ('90 KF Laser 1.6) engine that any extra oil would burn off and then settle, I can't remember whether or not I've found the same with this one, I think so.


    I find that the hydraulically adjusting lifters get clicky and noisy when there's not enough oil and the engine's cold. The lower the oil, the more seconds it takes to stop (suddenly). I guess I need a flush, they're probably jamming. If there's enough oil they're fine.




    Off topic:


    Interestingly, yesterday my brother suddenly said, out of the blue, (after telling me he'd bashed in the boot of my car while borrowing it) that he was considering replacing his '99 Magna with something like a Sierra but with one of those 2.0L Engines Suzuki make, oblivious to the fact he'd just been driving one.


    Funny the way the world works.


    Nice engine. Mazda's configured with a variable manifold which makes it sometimes push at 5000RPM but overall it's gentle, revs easily, feels like a V6 except when filling it up. I love it and I'd love to see a version of it that isn't transverse - the Suzuki version. It might be smoother still / more symmetrical. My brother said that he found it very relaxing to drive and this is the first manual passenger car he's driven for any period. Pity he drive it backwards into something solid.





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Sorry i have got a problem my suzuki got 1 problem manifold is too hot when i m going too long road

Posted on Sep 11, 2009

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I have solved my intermitant smoking problem. If the oil level is reduced to just under full it stops.If it is on the full mark it starts,
Yacht Aria.

Posted on Feb 13, 2009

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