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Help in choosing a compression tester

  • 04-11-2013 11:33am
    #1
    the cats pajamas
    Registered Users Posts: 255 ✭✭


    I am starting my first project (a non running vivacity), and need a reasonably priced compression tester for it.
    I have no idea about the quality of these tools and none are brands I recognize.

    I have a budget of about 30 euros for it and will spend a few quid more for one if it can fit most bikes.

    Can anyone help?


Comments

  • #2
    Interceptor
    Registered Users, Registered Users 2 Posts: 3,180 ✭✭✭Interceptor


    Sealey and Draper make kits with all the adaptors you need for around €30. Your local auto factors probably stocks them or can get them.

    If it is your first project, why do you need a compression tester for a single cylinder engine? You don't say whether it is 2T or 4T but if its a 2T 50cc just whip off the head and fit a set of rings rather than fart around with a compression tester.

    'cpt


  • #3
    the cats pajamas
    Registered Users Posts: 255 ✭✭the cats pajamas


    I picked it up for free, then asked someone where i should start with a none runner I was told make sure it has compression, spark and fuel.
    It has no spark but just going to check compression to see what to do next.


  • #4
    Interceptor
    Registered Users, Registered Users 2 Posts: 3,180 ✭✭✭Interceptor


    Borrow a compression tester or just put your thumb over the spark plug hole while cranking the engine. Fix the missing spark if you can and proceed from there. Is it a 50cc 2T? There are probably cheap piston/ring kits available that would eliminate a lot of issues in one go.


  • #5
    the cats pajamas
    Registered Users Posts: 255 ✭✭the cats pajamas


    OK, ill look into it.
    It is a 2007 pug vivacity, it's a 50cc two stroke.


  • #6
    jimgoose
    Registered Users, Registered Users 2 Posts: 20,180 ✭✭✭✭jimgoose


    Halfords do a very good Gunson one for €30:

    Gunson Hi-Guage, Halfords


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  • #7
    two wheels good
    Registered Users, Registered Users 2 Posts: 1,996 ✭✭✭two wheels good


    Interceptor wrote: »
    Borrow a compression tester or just put your thumb over the spark plug hole while cranking the engine. Fix the missing spark if you can and proceed from there. Is it a 50cc 2T? There are probably cheap piston/ring kits available that would eliminate a lot of issues in one go.

    I agree. This is the first compression test. Don't spend your money just yet.

    I sorted out a friend's scooter recently. The electrical choke wasn't working (seems to be a common problem) and there was a split in the rubber inlet manifold.


  • #8
    the cats pajamas
    Registered Users Posts: 255 ✭✭the cats pajamas


    ok, ill do the thumb tonight :)
    I don't really start into it until next Thursday when i have a bit of holiers.
    You can expect a fair few more threads about this moped over the next while :)
    If anyone knows of a good documentary on how mopeds work start to finish I'd very much appreciate it


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