suzuki 1983 GS 450L?

Question

hello there Im looking for some possible answer to this, my bike is an old bike and I want to ride my bike again. last week I clean the carburators piece by piece, I put new gasoline new hoses, the engine crank but it won't start some time make a explosion but nothing else. Do you know what else I can check to make this bike run again. The bike has electronic start.
thanks again.

Answer 1

Hi, doe;s it want to start on full choke? if so sounds like the primary circuits may be plugged, another thing if the idle is set to high it will not start. as for the air-fuel mixture set screws they should be 1&1/2 to 1&3/4 from closed as an inital preset. rule of thumb on the flost leval, the float arm should be parall to the carb. body (part that the float bowl attatches) as it starts to depress the spring tab on the needle.
one more thing is the needle and seat may need replacing.
You should get a shop manuel from suzuki and follow recomended procedures under carb.and fuel section. Anyway good luck and happy riding;)

Answer 2

As me&2kids said, you might get a new set of spark plugs. Gap at about .028" and if you don't have a feeler guage, almost all auto parts stores have those gappers that look like a coin. Not exactly the most accurate, but close enough. Install them, and crank it over and see what happens. Try this several times and if it doesn't start, remove the spark plugs and take a look at them. If they're wet and smell like gasoline, then you're getting fuel to the cylinders and it's probably ignition that's the problem.

Stick a spark plug into one of the plug wires, lay it on top of the engine, making sure it's making metal to metal contact with the engine. Crank it over and watch for a spark. A bright blue spark is normal, but if a puny little orange one or none at all, then there's other ignition things you need to check.

If the plugs are dry, you're not getting fuel, so you need to check the fuel system. You might make sure the fine screen that's inside the tank and is attached to the fuel petcock doesn't have gasoline varnish on it and is preventing fuel from flowing.

If your bike has a vacuum operated fuel petcock, it will say ON, RESERVE and PRIME. Since the carbs were cleaned, make sure you turn the lever to prime so gas can flow to them.

Answer 3

As everyone here has already suggested check the plugs as that's a pretty cheap fix and a likely culprit. However, as an owner of a GS series ('78 gs550) they can have timing and valve adjustment issues. Great bikes and built like tanks but they do need a bit of maint. every now and again.

Mine has a hydraulic timing belt tensioner and it sat for quite some time before I started riding it on a regular basis. It made quite a bit of noise and ran rough for awhile until .... well, I ran the bike hard a few times. Of course that's not helping you with a no start issue but it illustrates my point :)

Either rate bikinkawboy gave you probably the best answer of where to start and how to proceed. I just thought I'd add my little bit as an old GS owner

Answer 4

Before guessing an ignition problem, I would start where you did.
The carburators were completely disassembled, cleaned and put back together. Were all the settings checked when this was done? Float level, etc.
The manual you use for the settings will also contain a basic troubleshooting guide. They all do.

Answer 5

Is it GS or GSX? i think of 1983 must be the DOHC sixteen valve motor with sixteen" front wheel. (GSX in Europe, GS in States)) would not have the comparable collectability as SOHC Honda CB750 yet its a much extra useful motorcycle. ( The DOHC Honda's have been junk in my opinion) surprising motor, on the topic of the comparable dimensions because of the fact the 1100 so its very understressed from time to time had some problems with turbines/regulator/rectifier yet ordinary rather well worth the funds. it rather is going to out survive him by utilising years if it has recurring upkeep.

Answer 6

have you tried new plugs? Make sure you have spark at the wire, and if that fails shoot a little bit of carb cleaner into the carbs to see if it'll fire.