Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


GS500 cutting out/loss of power

Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

crazySnublz
L Plate Warrior



Joined: 14 Dec 2012
Karma :

PostPosted: 12:01 - 08 Sep 2018    Post subject: GS500 cutting out/loss of power Reply with quote

Well firstly itís been a while since Iíve been on here, since then Iíve passed my A2 license back in Feb and got myself a gs500e N reg a few months beforehand.
Initially all was great, apart from the cam cap bolt threads had been stripped but that was nothing for me. Then about 2 months back it has developed itís cutting out issues. It becomes almost un rideable after about 5 minutes but itís kind of intermittent and if I wait between 5-45 minutes I can ride it again for a little bit. But it can idle indefinitely (Iím not sure how long as I always have other things to do and donít want to leave it run without supervision)
What Iíve checked so far is:
ēthe diaphragms in the carbs
ēIíve blown out the tank vent in the cap
ēfor testing Iíve riden it with the tank open
ēchecked the floats
ēchanged the petcock for my spare one
ēchanged the coils
ēchecked the best I can of the fuel tap
ēchecked for any air leaks
ēchecked the battery and charging
Iíve done some research online/in the manual before reactivating on here, and none seem to say for definite if what they did worked. What Iím thinking though is that the crank sensor is breaking down when warm and once it has cooled down for about 10-30 minutes it starts again. As stated before itís quite intermittent as it will be fine for a week then start messing about again. At the moment itís my only means of transport as my car has no tax and I canít afford it till next month. Any help would be appreciated as Iím away next week in Cambridge but Iím passing by a Suzuki dealer who has a few parts for it in stock anyway and I could possibly pick a part up on my way back.
I should mention Iím a car mechanic by trade but I know my way around a bike, have a friend who is slightly more knowledgeable with bikes.
 Back to top
View user's profile Send private message You must be logged in to rate posts

jaffa90
World Chat Champion



Joined: 06 Apr 2016
Karma :

PostPosted: 18:13 - 08 Sep 2018    Post subject: Reply with quote

Carry a plug spanner with you and when it starts to cut out give it full throttle / choke.
Also smell the end of the exhaust for fuel.
 Back to top
View user's profile Send private message You must be logged in to rate posts

crazySnublz
L Plate Warrior



Joined: 14 Dec 2012
Karma :

PostPosted: 10:35 - 09 Sep 2018    Post subject: Reply with quote

jaffa90 wrote:
Carry a plug spanner with you and when it starts to cut out give it full throttle / choke.
Also smell the end of the exhaust for fuel.


Please elaborate on why I should carry a plug spanner??
Iím not entirely sure on whether Iím being thick or if itís just too early to understand what you are on about.

I get why I should give full throttle and smell the exhaust, just not the plug spanner bit.
 Back to top
View user's profile Send private message You must be logged in to rate posts

jaffa90
World Chat Champion



Joined: 06 Apr 2016
Karma :

PostPosted: 01:24 - 10 Sep 2018    Post subject: Reply with quote

If the spark plugs are wet with fuel after giving it full throttle / choke and smelling the exhaust then you have an electrical problem.
 Back to top
View user's profile Send private message You must be logged in to rate posts

crazySnublz
L Plate Warrior



Joined: 14 Dec 2012
Karma :

PostPosted: 07:49 - 15 Sep 2018    Post subject: Reply with quote

Firstly, cheers for clarifying it was too early for my mind to be working with the added stress the bike has given me the past couple months.

Thought Iíd give an update as to whatís gone on.

Before I left, it refused to start altogether regardless of how long I left the fuel tap open and tank open too. Eventually started after a hour or so of messing around but seemed to be running on 1 and half cylinders.

So it got put on charge and still refused to start once I had returned. I was tempted to sell it and get another gs, set it on fire or leave it and walk to work for the next few weeks. But come Thursday I decided to do more stripping.

So I took the carbs off again, checked the O/S one as that was the side that seemed to be running like crap. I decided to swap the float with one from my spare one, removed both of the inline filters, cut the carb fuel supply pipe down a touch and change the same banks ignition coil.

Started up pretty much first flick after the chambers filled up with no choke and even went okay on a quick test drive (got further than it did when it was playing up). Took it for a blast after work yesterday giving it the beans and it seemed to behave. So I think it may be ok now without actually knowing what was exactly wrong which doesnít help others who may say this post with the same issue.
Only problem I have now is I have a small leak from that float chamber and all the screws/bolts have rounded so thatís another thing to sort whilst it gets some paint and re making the entire loom over the winter.

Iíll keep it updated as to whether the problem still occurs but all is good at this present time.

On a side note, the only problem with being a curious mechanic is that when an engine goes bang for an unknown reason you want to take it apart. So I also have a 125 engine to be stripping but the engine will be taken apart in the comfort of my living room over the coming months too.
 Back to top
View user's profile Send private message You must be logged in to rate posts

jaffa90
World Chat Champion



Joined: 06 Apr 2016
Karma :

PostPosted: 10:22 - 15 Sep 2018    Post subject: Reply with quote

""""Only problem I have now is I have a small leak from that float chamber""""
Sounds like the float chamber is overfilling if weeping from the top.
 Back to top
View user's profile Send private message You must be logged in to rate posts

crazySnublz
L Plate Warrior



Joined: 14 Dec 2012
Karma :

PostPosted: 14:07 - 15 Sep 2018    Post subject: Reply with quote

I reused the rubber gasket for the float chamber which is why itís leaking, as itís only on that one rather than the both of them. It was only meant to be temporary though,to see if it had worked or not and I didnít have any gasket sealer at home.
 Back to top
View user's profile Send private message You must be logged in to rate posts

jaffa90
World Chat Champion



Joined: 06 Apr 2016
Karma :

PostPosted: 14:43 - 15 Sep 2018    Post subject: Reply with quote

"""""I reused the rubber gasket for the float chamber which is why itís leaking,""""
Remember that the float chamber does not fill up with fuel.
 Back to top
View user's profile Send private message You must be logged in to rate posts
Display posts from previous:   

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT + 1 Hour
Page 1 of 1

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 

Debug Mode: ON - Server: discovery (www) - Page Generation Time: 0.13 Sec - Server Load: 1.42 - MySQL Queries: 16 - CDN Objects: 25 - Page Size: 57.86 Kb