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Model specific boards => Golf mk4 => Topic started by: annekarob on 07 February 2009, 16:24

Title: Yellow gunk in oil cap???
Post by: annekarob on 07 February 2009, 16:24

I have just been out to check the levels and noticed that in the top of the oil cap is a yellow 'mayo' type substance, im hoping its not signs of a head gasket!!! :shocked: Car only gets run 1.2 miles to and from work every day so any ideas people? Is it a case of the car is not getting chance to heat up and cool down in a normal way as if on a normal length journey.

Car is running fine and is not loosing any water and not much oil (being a 2.slow)!!! :smiley:

Please anybody help, got me stumped. :huh:

Title: Re: Yellow gunk in oil cap???
Post by: boneybradley on 07 February 2009, 16:25

condensation.....drop the oil and flush. and drive it more (to proper temp at least!) as it onlt takes a few short journeys to make mayo!!

Title: Re: Yellow gunk in oil cap???
Post by: annekarob on 07 February 2009, 16:29

Thanks for the quick repsonse, due in the 18th of feb for full service anyway. Gets used more at weekends and covers 200+ miles but its in the week where it doesnt. Too lazy to get the bike out!!! :grin: :grin:

Title: Re: Yellow gunk in oil cap???
Post by: turbomike on 07 February 2009, 16:30

defo change oil n filter and put engine flush thru it. if only goin 1.2miles a day at least start it up 10mins befor u set of. also u checked ur coolant ?????

Title: Re: Yellow gunk in oil cap???
Post by: annekarob on 07 February 2009, 16:33

Yeah coolant level fine. have been starting it up for a good 10-15 mins early in this weather. Thanks again, thought the dreaded head gasket was going! :shocked: Panic over. Nice pics again by the way, somebodys been busy cleaning today. I was too and got some right funnny looks washing car in the snow and hoovering!!! :huh:

Title: Re: Yellow gunk in oil cap???
Post by: turbomike on 07 February 2009, 16:36

LOL well if head gasket gone or on way sumtimes u can get mayo loking stuff in coolant to, hope everything ok, yeah thought i best give it a clean as use it everyday and the roads bin covered in salt so dont want any rust lol

Title: Re: Yellow gunk in oil cap???
Post by: golfgtidan on 07 February 2009, 16:39

as said its most likey due to short distance driving..  :smiley:

Title: Re: Yellow gunk in oil cap???
Post by: rtb51 on 08 February 2009, 18:09

Don't worry, this seems to be a common fault, certainly with 2.0. I've had mine 4 years and it's always done it, but it doesn't use any water at all which is a good sign.
It will be made worse by short journeys.
One thing you should do is to clean out the filler cap and breather pipes as they will block up over time.
Take of the filler cap, then remove the filler neck, it twists and pulls up. Take off the two breather pipes and wash the whole lot out in paraffin. You'll be amazed how much crap comes out.