Author Topic: Suzuki gt250b hard to start  (Read 1395 times)

0 Members and 1 Guest are viewing this topic.

Offline Terryb

  • Club Member
  • Newcomer
  • Posts: 33
Suzuki gt250b hard to start
« on: March 17, 2018, 08:06:37 PM »
The bike will start after 15 to 20 kicks and then seems to run and ride ok
Bike has had complete make over with crank seals carbs cleaned
Bike has only been set up by myself with Haynes help
The thing is it will start 3rd 4th kick but couple of twists on the throttle and she seems to run out of fuel and stop.This happens several times and eventually I can get it to run.
Any ideas or is it simply a correct set up needed timing advance retard?
Just to say carbs are as built and very clean with the manual settings and points set correctly

Regards terryb Silver RD350B owner

Offline Motty

  • Richard
  • Club Member
  • Port Hacker
  • Posts: 3905
  • Location: England
Re: Suzuki gt250b hard to start
« Reply #1 on: March 17, 2018, 10:27:41 PM »
Was the timing set with a dial gauge? Is the choke functioning?
“...inside every old person is a young person wondering what the f*@k happened.”
Terry Pratchett

Offline Terryb

  • Club Member
  • Newcomer
  • Posts: 33
Re: Suzuki gt250b hard to start
« Reply #2 on: March 17, 2018, 10:51:52 PM »
It’s more like a fluffy start stop

Ok I’ll look at choke but when it’s not down it won’t start at all
Timing set with a dti and the points almost open to the marks on the tell tale windows!

Offline 350lc

  • Club Member
  • Port Hacker
  • Posts: 824
  • Age: 60
Re: Suzuki gt250b hard to start
« Reply #3 on: March 17, 2018, 11:43:03 PM »
What about the float heights are they set right or sticking.is fuel tap supplying enough petrol.
rd 200dx. rd 250e
 tdr 250
RD 350 LC 1981
KR1 250
gt 125 1975
gsx 750 1981

Offline Terryb

  • Club Member
  • Newcomer
  • Posts: 33
Re: Suzuki gt250b hard to start
« Reply #4 on: March 18, 2018, 08:50:25 AM »
Thanks guys for tips I will look at these and let you know
Unfortunately it will a couple of weeks has away for work  :-[

Offline Micron

  • Club Member
  • Back Lane Scratcher
  • Posts: 151
  • Age: 53
  • Location: Benfleet, Essex
Re: Suzuki gt250b hard to start
« Reply #5 on: March 18, 2018, 12:10:04 PM »
Terry,
A mate of mine is having the sane problem, we have stripped and rebuilt the engine twice, different people.
Done lots of stuff with the carbs, oil ways etc.

We now think that it might be one of the carbs, so gave a replacement and we are going to look at another electronic ignition

Offline tractorman

  • Club Member
  • Port Hacker
  • Posts: 1285
  • Location: Andover, Hants
Re: Suzuki gt250b hard to start
« Reply #6 on: March 18, 2018, 05:20:22 PM »
Looks like the GT uses the same choke system as the RD. (not actually a choke, more an enricher) Make sure you have the float bowls on the correct carbs because one bowl will have a starter jet.

Offline Terryb

  • Club Member
  • Newcomer
  • Posts: 33
Re: Suzuki gt250b hard to start
« Reply #7 on: March 18, 2018, 10:26:24 PM »
That’s interesting about the correct bowels
I had them sonic cleaned and rebuilt them taking care all was correct apart from not knowing that
Let’s hope that’s it :)

Offline 350lc

  • Club Member
  • Port Hacker
  • Posts: 824
  • Age: 60
Re: Suzuki gt250b hard to start
« Reply #8 on: March 18, 2018, 10:49:27 PM »
is it a vacumm feed petrol tap if so maybe the vacumm not working. see if it runs ok with the tap on prime. Dont leave it on prime as thats a constant petrol flow and it will flood the bike as i am sure you know.
rd 200dx. rd 250e
 tdr 250
RD 350 LC 1981
KR1 250
gt 125 1975
gsx 750 1981

Offline 5port

  • Club Member
  • Port Hacker
  • Posts: 6943
Re: Suzuki gt250b hard to start
« Reply #9 on: March 25, 2018, 02:28:00 PM »
Looks like the GT uses the same choke system as the RD. (not actually a choke, more an enricher) Make sure you have the float bowls on the correct carbs because one bowl will have a starter jet.

The float bowls thing for the "choke" fuel feed sounds very likely. Make sure that the bowl that goes on the left carb has a clear hole at the bottom of the choke pick-up drilling and, that the tube/drilling up to the "choke" plunger is clear when the choke lever is "on".  Cheers

5port
5port

Offline gary b

  • Forum member
  • Back Lane Scratcher
  • Posts: 135
  • Location: Chesterfield
Re: Suzuki gt250b hard to start
« Reply #10 on: March 30, 2018, 11:20:38 AM »
is it a vacumm feed petrol tap if so maybe the vacumm not working. see if it runs ok with the tap on prime. Dont leave it on prime as thats a constant petrol flow and it will flood the bike as i am sure you know.

My guess would be the vacuum tap as well.
gary b

Offline Terryb

  • Club Member
  • Newcomer
  • Posts: 33
Re: Suzuki gt250b hard to start not now
« Reply #11 on: April 13, 2018, 01:36:29 PM »
 :)  :) Thanks every body for replying to my ex hard starting gt250
The problem was simple that I had the wrong bowel on the carbs,justed swap round to the correct carb and Wow :o starts 3rd kick


Offline Motty

  • Richard
  • Club Member
  • Port Hacker
  • Posts: 3905
  • Location: England
Re: Suzuki gt250b hard to start
« Reply #12 on: April 13, 2018, 03:51:32 PM »
A nice easy fix :)
“...inside every old person is a young person wondering what the f*@k happened.”
Terry Pratchett

Offline tractorman

  • Club Member
  • Port Hacker
  • Posts: 1285
  • Location: Andover, Hants
Re: Suzuki gt250b hard to start
« Reply #13 on: April 13, 2018, 07:00:53 PM »
Glad you sorted it. Its a very easy mistake to make.

Offline 5port

  • Club Member
  • Port Hacker
  • Posts: 6943
Re: Suzuki gt250b hard to start
« Reply #14 on: April 14, 2018, 08:34:09 AM »
A nice easy fix :)

Yep!  Good job. :)

5port 
5port