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Missing On Idle, Spraying Liquid Out Exhaust.

that_one

By that_one,
in General Maintenance

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that_one Newbie

that_one

Posted
Posted

Im a newbie when it comes to all the skyline sort of things, well, pretty much cars all together.

Ive run into a problem with my r33, and am definitely in need of help.

It seems to sound like a miss when its on idle and its also spraying some clear liquid out the back which is combined with some sort of dark grey/black residue? I think the word for that is. Anyway, any help on the matter would be much appreciated. Thankyou.

StevenCJR31 Veteran

StevenCJR31

Posted
Posted

The liquid will be condensation/water vapour

NOT unburnt petrol

Its dark coloured because the water is picking up the carbon and ash that is sitting in the exhaust pipe

Sinista32 Grand Master

Sinista32

Posted
Posted (edited)

Agree - more so if parked outside but will happen when air pressure is pushed out and when there is heat applied to cold (Condensation)

May still have a misfiring problem but that has naught to do with the clear fluid with grey/black coming out of the muffler.

Unburnt fuel comes out as fumes

Edited by Sinista32
SkudR33 Proficient

SkudR33

Posted
Posted

You guys can argue the point all you want but my car is currently having this issue... Cylinder one is not firing and therefore on cold start it spills out some unburnt petrol. It gets so bad that it even leaks out of my cat!

It may not be his problem, but I'm just pointing out possibilities. Also take note of the fact that in 30+ degrees temperatures your exhaust condensation is very minimal.

:)

jjman Mentor

jjman

Posted
Posted

To me this reeks of head gasket and iv even had exactly these symptoms in a car I had years ago that did the head gasket.

If you let the car idle long enough to heat up does it still keep putting fluid out the pipe? If so, quite likely HG...

SkudR33 Proficient

SkudR33

Posted
Posted
^^no one is arguing the point here. . In your case id be more concerned about the fuel diluting your oil than it leaking out the cat

:) I totally agree - and if you smell my dipstick it smells like petrol!

  • 4 weeks later...
89CAL Grand Master

89CAL

Posted
Posted

Mine did this on cold start before tuning. Havent really looked since the tune but it was just condensation, clear liquid with carbon bits made it look black. Not coolant so had to be condensation

I'd say if it goes away once it warms up a little then its probably just conensation

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