Question about 1994 Geo Metro

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Geo metro troubleshooting

Occasionaly smokes a lot and blows oil on engine. seems to be to much pressure in valve cover

Posted by Anonymous on

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  • Geo Master
  • 20,706 Answers

Smokes where? and what color, ?
ill guess tail. pipe end? if not, nows the time to say where.
black is fuel (tail)
white is oil or steam, oil smoke lingers and smells like burning oil
steam goes a way fast like moms tea pot. and sames nasty sweet in fact smells like AF, antifreeze (got that, if not you cracked the block)

suzuki has huge oil returns, no need for this unless engine is packed in sludge. never changing oil
the PCV valve is clogged, or far worse.
a bad engine can overwhelm any PCV. easy.

the engine is leaking
that can be PCV packed or bad seals and gaskets or both.
why not get the engines serviced?
do the 60,000 mile list of service points and win.

if the piston rings are bad, there will be huge blow by
and no PCV can handle that..... so check PCV first.
then if that dont fix it check for excessive ring blow by,
do a cylinder leakdown test. (by the book)\

Posted on Dec 14, 2014

  • hotrod10 Dec 15, 2014

    The oil returns are huge, but replacement head gaskets many times have small holes that can lead to oil backing up on top of the head, espcially if the the oil control fitting falls out and does not get re-inserted into the block when the head gasket is replaced (I speak from personal experience). It doesn't happen with OE, which is why I qualified my statement with "If the head gasket has been replaced".

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  • Contributor
  • 42 Answers

First stepwould typically be to replace the PCV valve. It's located behind the valve cover at the bottom of the rubber tube that connects to the back of the valve cover and branches off to the air filter housing.

Alternate possibility:

If the head gasket has been replaced, it's likely one of the oil returns is blocked (replacement head gaskets, for whatever reason, don't usually align with the head correctly). The solution is to open the secondary oil return. I used a one foot piece of 4 gauge bare copper wire (more of a 1/4" copper rod). Remove the valve cover. Taper the end of the copper wire to a blunt point and drive it about 6 inches down the oil return on the backside of the head near the rear of the head (directly behind where the oil filler cap was).

Posted on Dec 14, 2014

  • _-__-___-_
    _-__-___-_ Dec 15, 2014

    not from suzuki not for FelPro sure Ebay trash, sure, anything from there. no name is bad inside any engine. but of the top 4 suzuki forums,. not one mention of this ever. By felpro and end this, as its parked, UP so you cant get up sidedown, when any pro works and engine he matches up the old with new gaskets, if they dont match they are junk, again, buy felpro. end the gross experiences of poor quality parts,

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SOURCE: Gas mixed the engine oil and ruined the engine.

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You might also check the single injector, had a friend's that the fuel pressure regulator had been messed with and was over-pressurizing the injector, that weakened the injector allowing it to flood at idle and also when cut off (the injector was leaking)

Posted on Apr 29, 2010

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its a GEO POPPER.
"no oil up on crank case"

no idea what that means.??????
yes PCV valve. do clog.

white smoke at end if tail pipe.
you didnt say where,?

white smoke has 2 reasons.(tail end)
Steam and oil.
steam goes away fast and looks just like moms tea pot. and smells sweet, like the antifreeze in engine. (rad cap off ,sniff sniff, cold engine)

oil burning, smoke is very very slow to go away.
and smells like , blush burned oil.
if not sure what burn oil looks like or smells like
take out the dip stick on a hot engine
let it drip to the hot exhaust manifold there.
now you know. and is a key diagnostic skill.


no oil seen on dip stick end?, you mean that?
well you need to keep that from happening,
doing weekly service, and for sure old cars.
26 years old.

low oil invites blowing up a good engine.
for sure.
if it did that smoke is oil
if it did 10x worse, both .

my wild guess is you meant to say
I didnt see oil leaking on top of engine.
right?

if the engine backwires to the air cleaner
you forgot to replace the cam belt every 60k miles
the pcv will also be clogged, on cars not getting proper service, super colon.
if the PCV clogs,engine may leak oil bad.

this engine btw is a G10 3 cylinder.
with TBI injection.
we can talk TBI all day, owned one.

white smoke can come from many places
exhaust manifold, leaks of oil can land there
engine can back fire to air cleaner making smoke.
tail end.
steam is much worse. ill not delve in to that yet/.

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