Question about 1982 Suzuki Gs 550 L

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Wont start I have a 1982 Suzuki GS 550 L that will not start without the use of ether. After it starts I have to choke the air intake with my hand to keep it running even with the enrichers all the way on. Once it warms up it runs just fine except it has a tendancy to stall the engine when you give it full throttle going down the road. If the engine dies or I shut it off even when it is hot, it usually will not start back up until you give it a little ether. Is it possible that the timing is off? How would I check and adjust the timing? Thank you for any assistance you can provide.

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Hi and welcome to FixYa,

Appreciate the direct "Ask Me".

Your described problem based on the bike being a 1982 model could be varied, among them are:

  • weak spark - not necessarily weak battery. Culprits could be loose loose connector to the CDI, low IGN +12 to the + terminal of the coil (check with a voltmeter while just switch on and when cranking/starting), or even a loose ground terminal. Check spark by removing plugs, reconnect the plugwires, let the threaded end touch metal part of engine, crank. Sparks should be strong;
  • corroded/poor contacts in the ignition switch resulting to the above. You can test by running a jumper wire straight from the battery to the + terminals of the ignition coil;
  • too lean air/fuel - plugs should be brownish in color;
  • air or vacuum leak - resulting to the above and high or poor idling;
  • unbalanced carbs - carb check/clean, verify air adjustment screw number of turns,
  • compression low - have a compression check.
Would look forward to your updates. Good luck and thank you for using FixYa.

Posted on Feb 02, 2009

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