Question about 1982 Suzuki Gs 550 L
Hi, Dan some bikes get "Sun Stroke" after running fine in the morning then shut off and parked in the sun for a couple of hours on a hot day. You get back on the bike hit the starter button and nothing happens or the engine turns over but will not fire. Then you put the bike in the shade for 20-30 minutes and it fires up no problem.
The primary reason for this phenomenon is faulty wire connections in the Starter and/or Ignition Circuit. You may have a wire connection/component that makes just enough contact when cool to start and run the bike, but when parked and exposed to direct sunlight heat causes expansion and creates an "OPEN" in the circuit not allowing the bike to start. You move the bike into the shade for a few minutes, the temperature goes down allowing the connection to contract and make better contact and suddenly "it's a miracle" the bike starts. I know what you're thinking that Gremlin could be anywhere, and you would be right in that assumption, you can take your bike to a dealer, spend tons of "DRACHMA" only to receive validated nervous emotions the next time you park in the sun, then 1 week later it doesn't start. Start by doing a ground check:
Check the battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary. Check all common grounds for the same suspects.
The secondary reason your bike may get "Sun Stroke" is vapor lock although this is a rare scenario it does happen.
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Won start in hot weather
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Posted on Aug 10, 2017
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Posted on Jan 02, 2017
I had the same issue with my 1997 Astro and it was the crank position sensor. It would loose power if I were driving and shut down once it slowed down or just shut off if idling or at a light. It would them not fire back up until it cooled off. Hope this is of good help.
Posted on Aug 16, 2009
SOURCE: suzuki gs550l flot height
not sure on the exact specs but flip the carb upside down and look how the floats look to the horizon of the earth. Sounds silly but that is how pretty much all bike mechanics set them, just make them level to the earth. Good luck
Posted on Oct 17, 2009
My guess is there is ingress, via a leak, of un-metered air after the Mass Air Sensor. The air under the hood can get very hot on a sunny day. If there is a leak in the filtered air ducting or one of the vacuum tubes has become detached from the intake manifold/plenum then sucking in hot air will make the fuel mix to the engine to lean to fire up. Check you ducting especially where it joins the throttle for any cracks or loose joints. Check crank case breather pipe connection to duct. Check each vacuum tube, after the throttle, connecting with the manifold for leaks. Check the brake vacuum servo pipe for good connections
Posted on Jul 16, 2010
the mas air flow sensor u need to put it on scanner not to check codes but see whats going on with all the sensors your fav garage if your a good customer it maybe be free if not no more then 20 bucks if u scan it u will b chasing your tail good luck
Posted on Feb 27, 2012
Testimonial: "My mech. thought the same thing but wasn't sure. Thanks."
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