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Message started by Storker on 06/11/14 at 06:57:59

Title: bike stalls , backfires
Post by Storker on 06/11/14 at 06:57:59

ls 650 from 1988 with 28800 km. (19.000 mp) on the clock

Bought the bike last year, but did not touch the motor, just did the obvious - brakes cables etc .

Just filled the tank with fresh gasoline, went to the Beach about 15 km away: At the ride home bike started to act up. Would not "take the gas", but stalled & backfired. At idle it died, after a little while, it was able to start after a lot of trying, but only in idle mode and very uneven it was. Trying to rev the bike the engine died.

After 2 mins more waiting. I could start it , so i could hump home.

I wonder if this behaviour is gasoline or air related , or both

What do You gurus think ?

Title: Re: bike stalls , backfires
Post by verslagen1 on 06/11/14 at 07:23:59

Test your petcock 1st

go to the tech section index, scroll down to petcock, 1st title.

Title: Re: bike stalls , backfires
Post by justin_o_guy2 on 06/11/14 at 09:12:57

And if you dont know the cam chain has been serviced, either a Versy installed or chain replaced, you need to look in there RIGHT NOW... cuz the miles on it are well into the range where the tensioner spits its guts out & destroys the engine,, & by destroys I mean ruins it. It will cost more to repair than buying a used one, paying freight & swapping cost,.

I would listen closely to that engine & if I had even the slightest doubt, Id open it up.. Snot hard,, time consuming, but not demanding of mechanical ability to any real degree, UNless it needs a chain, then it gets a little challenging, but theres enough people here who know how to talk a rank amateur thru it,, & the cost of tools to do it is nothing compared to the cost of paying to have it done,

Title: Re: bike stalls , backfires
Post by shorty on 06/12/14 at 07:19:54

also please let me add:
if the petcock test passes OK, you've got a clogged jet. The idle jet is real small, doesn't take much to clog it..
will it run with the richening knob pulled out?