1. barrie

    barrie Puttering Along

    trabi has been stored for a few years then this last 2 week's I have been driving her just starting to have faith in the trabi then today the old p50 felt like it was running out of fuel jurking and slowing down forced to move down the box and look for a place to stop. I had just under half a tank of petrol in her humm well time to check the plugs both black and wet humm may be 2 much fuel so I toped the tank up and put new plugs running better but not right how ever got me to the lock up to change cars

    tomorrow I will check the battery and brake out the carburetor cleaner then see how things are
  2. A Spooky Ghost

    A Spooky Ghost Loyal Comrade

    Me thinks this could be tied to your not starting when hot issue. Like a coil, and or condenser is breaking down with heat. Both and ignition, or a fuel starvation issue will give the same symptoms as this.

    For peace of mind, the next time you get it running- and it will idle. Put your hand over the carb intake-(it should instantly start to die)- {if it has a removable elbow-take this off, they always leak some when doing the test}. So if it does die, this means at least your seals on the engine are good...

    The other place to look, would be your fuel tank cap. Is the vent hole open, or does it have one?

    What about the fuel tap/ line. Does it have a good steady stream of fuel?

    You don't need to answer all of these( just ponder them to your self!).
    RogerDerSchrauber and barrie like this.
  3. barrie

    barrie Puttering Along

  4. barrie

    barrie Puttering Along

  5. barrie

    barrie Puttering Along

    not good news:( I have tried to upload vid but took of air cleaner and covered air intake car kept running what's next is this a engine out job? all so metal pipe was broken and rubber hose bottom of the block buy fan cracked
    Last edited: Mar 3, 2019
  6. A Spooky Ghost

    A Spooky Ghost Loyal Comrade

    Did you remove the METAL carb elbow? If not, remove the metal elbow from the carb, then put your hand over it again while running. The elbows usually leak!

    As for that cracked pipe, it looks like it is the heat exchange stuff, so it doesn't affect your problems...

    So if after the METAL intake elbow is removed, and it still runs with your hand over it. Then you have air leak somewhere. Could be in the carb mount gasket flange, case flanges, the crank seals, and or the cylinder base gaskets.


    That's about it...
  7. barrie

    barrie Puttering Along

    I did not remove I will check in mooring finger's crossed
  8. kev the builder

    kev the builder Loyal Comrade

    If the plugs are wet and black its most likely the choke on or air filter blocked or an ignition problem
  9. barrie

    barrie Puttering Along

    pop.jpg took the head of today look at top right all black think this is having some think to do with it
  10. A Spooky Ghost

    A Spooky Ghost Loyal Comrade

    I'm sure that didn't help anything. Seems a head gasket let go...

    They can, and do run with leaky head gaskets. If bad enough, this can cause quite a jerking, and slowing of the engine..

    So it is good you found it, but there is probably other ignition/ fuel related things going on.
  11. barrie

    barrie Puttering Along

    are their any gasket to replace on a p50 it look like metal on metal gasket to me

    like all ways I will keep fixing and driving and fixing and driving. some times I do think about getting a new trabant on a 12v system
  12. A Spooky Ghost

    A Spooky Ghost Loyal Comrade

    I can't say for certain if there is a replaceable head gasket on the p50. Though on the later 601s they come stock with a gasket, that sometimes people take off for a squeak more power.
    Since yours is leaking with no gasket,it means the head is warped. I would strongly recommend using a head gasket. Either way, you need to flatten the cylinder heads.

    The best way to flatten the sealing surface would be to use a
    piece of window glass, or mirror glass on a flat surface- with a decent grit wet sand paper on top (150-300 Grit). Sand in a figure 8 motion until the surface looks new.
  13. barrie

    barrie Puttering Along

    I have spare head's from a 601 engine wonder if they will fit o_O
  14. A Spooky Ghost

    A Spooky Ghost Loyal Comrade

    I wouldn't know. No need, if you flatten the old ones like I mentioned. Really easy to do!:cool:
    barrie likes this.
  15. barrie

    barrie Puttering Along

    broke down outside the pub today I was not getting flue in the carb after dismantling the fuel line and taking the top of the cab off it turned out to be the needle valve above the float had stuck closed cleaned it in fuel and of we went is their meant to be a filter in this cap? fuel.jpg
    their was not one in so I might put a inline one of a lawn mower
  16. trondd

    trondd Loyal Comrade

    Yes. The little one on the right here:
    [​IMG]

    There should also be the long one inside the fuel tank but it doesn't filter down as a small.
  17. barrie

    barrie Puttering Along

    I don't have any I will check trabant welt
  18. barrie

    barrie Puttering Along

    is that red tube for the resuve tank?
  19. A Spooky Ghost

    A Spooky Ghost Loyal Comrade

    No, it acts like a higher bottom for the tank. So when the fuel goes below it- then you need the reserve..

    Most 2 cycle mopeds, and older motorcycles have the same system. You could always leave it off, and be running on the full tank all the time. Which is fine, as long as you know how much fuel you have.....

    Also, here is a link to some factory exploded drawings. http://www.trabant-original.de/otdbx/TDokumente_view.php

    Yes your car did have head gaskets when new.
    Last edited: Apr 7, 2019
  20. barrie

    barrie Puttering Along

    I have put 2 head gaskets on her and cleaned fuel tank out car is running grate but now I have a new problem

    the carb has a glass to see how much fuel is in it and it is not filling past the bottom mark so am I right in thinking to needle valve need's replacing or the float I have took the needle valve out and cleaned it thir was shit in it need.png

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