GS450 wont start

[ansonfehr]

Possibly a stupid question I know but more than likely, it will be worth it.
So I have a 1980 GS450 and I have done quite a bit of work on her..
Got her on the road for about two weeks, tried to start her and no success..
Checked my plugs, they are sparking, and ain't fowled..
Any Ideas?

Anson

[mighty13d]

ok so lets start with what you did to it. Can you list what you did because 'quite a bit of work' is rather vague.

So you need compression, spark, fuel, air. are your spark plugs wet when you checked them? There's really a ton of things that could be wrong but i'm sure that with help, you'll be able to figure it out.



and welcome to the forum

[ansonfehr]

No work to the engine.
But re did the wiring harness
straightened the forks
replaced clutch cable
and before I owned it the carbs were overhauled.
Not wet no hmmm

[almarconi]

You should get a service manual and go through each system to make sure it is working properly. Maybe when you "re-did" the wiring harness a connection has become loose or grounded. You could have countless problems. Without a systematic approach your going to be going in circles.

[carlos020465]

Hi, ansonfehr.!
1. starter motor..run???
2. gas flows to the carburettor?
..

[81gs1100]

Possibly a stupid question I know but more than likely, it will be worth it.
So I have a 1980 GS450 and I have done quite a bit of work on her..
Got her on the road for about two weeks, tried to start her and no success..
Checked my plugs, they are sparking, and ain't fowled..
Any Ideas?

Anson

So they are sparking... But are they in the right order/time?

Was it running before you cleaned up some wiring?
Did is run after you cleaned up the wiring?

Simple check would be to take some carb cleaner and spray it into the airbox and see if the bike tries to start. If the bike fires up from the carb cleaner and dies shortly after it would sound to be a fuel problem.

How long did the bike sit from when it was running till you found out it wont start?