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Tiger Time => Steamers (1993-1998 Tigers) => Topic started by: Fulingbusen on November 22, 2012, 10:01:50 PM

Title: Only runs in idle
Post by: Fulingbusen on November 22, 2012, 10:01:50 PM
I'm new to motorcycles and I'm not sure where to start trouble-shooting.  My -95 tiger starts and runs fine when choking but as soon as I touch the throttle it dies until I release the throttle again. 

Revs around 4000rpms on idle with choke

Is there a basic way of tuning the carbs?  Acc to a receipt, they were cleaned and tuned last year and hasn't been running since. When I bought it a coil was broken and is now replaced.
Title: Re: Only runs in idle
Post by: rf9rider on November 22, 2012, 10:40:41 PM
Most common problem is blocked pilot circuit in the carbs.
First place to start is to give them a thorough clean out, then take it out and give it a good thrashing, usually clears it after 30/40 miles.
Can of decent carb cleaner in the tank does no harm.
Title: Only runs in idle
Post by: Fulingbusen on November 23, 2012, 04:39:53 AM
Thank you for the answer!

so a thorough clean out could be just adding carb cleaner in the tank or should I disassemble and clean them by hand?
Title: Re: Only runs in idle
Post by: rybes on November 23, 2012, 11:30:23 AM
if it was mine and i didnt know the history of the carbs, id pull em apart and give em a good cleanin with carb cleaner and a compressor. just make sure you get a new set of float bowl gaskets or youll be takin em off again in a few weeks to stop a petrol leak.
Title: Only runs in idle
Post by: Fulingbusen on November 23, 2012, 01:01:46 PM
Ok, thanks!

I also have a very nasty noise when i'm running the starter and the local shop said I have to rip the engine apart to fasten a shaft inside the engine...
Title: Re: Only runs in idle
Post by: Mustang on November 23, 2012, 02:17:16 PM
Quote from: Fulingbusen on November 23, 2012, 01:01:46 PM
Ok, thanks!

I also have a very nasty noise when i'm running the starter and the local shop said I have to rip the engine apart to fasten a shaft inside the engine...
the carbs are the least of your worrys then .....................
sounds like you need to fix the sprag clutch first , I'm bettin you wasted it tryin to start it with :
a. weak battery
b. dirty carbs
or c. all of the above
Title: Only runs in idle
Post by: Fulingbusen on November 23, 2012, 06:01:03 PM
Prob alt c, but to my defense it was like that when I received it.

Is this starter problem common?
Title: Only runs in idle
Post by: Fulingbusen on November 23, 2012, 09:10:04 PM
Is there a guide available that shows how to fasten this "sprag clutch"? The workshop told me that I should sit the engine on the workbench and separate the engine.  They said that some screw probably is broken that holds a shaft of some sort.

I pulled out the carbs today.  Here's is a pic to enhance the thread:
Title: Re: Only runs in idle
Post by: rybes on November 23, 2012, 09:54:51 PM
if ya do a search on here for sprag you should find plenty on it or DAR. whats that in the background and where in the world are ya ?
Title: Only runs in idle
Post by: Fulingbusen on November 23, 2012, 10:07:25 PM
Great, I will try to search for tips then. 
Its a disassembled Corvette C6 in the background.  I'm located in Sweden, the country with a short summer and a long garage-season.

Title: Re: Only runs in idle
Post by: rybes on November 23, 2012, 10:22:34 PM
nice toy you have there. thought ya might be up that way somewhere. im just down the road, in Denmark  :wave
Title: Only runs in idle
Post by: Fulingbusen on November 24, 2012, 05:37:36 AM
Howdy neighbor!  :wave
Title: Only runs in idle
Post by: Fulingbusen on November 24, 2012, 06:51:50 AM
After searching around for sprag threads I found many good threads but I'm not sure that the sprag is my problem.  My starter engages and disengages perfectly, it is just the awful banging noise while starter is turning that I need to fix.  The DAR sounds like it could my problem.  Thanks!  I will continue to disassemble = fun times!
Title: Re: Only runs in idle
Post by: Mustang on November 24, 2012, 07:35:29 PM
yep that god awful banging when cranking the starter motor is the sprag clutch going tits up ,usually . not sayin it is but If I were a bettin' man ........

pull the clutch cover off and watch what the clutch does when the banging is going on .
Title: Only runs in idle
Post by: Fulingbusen on November 24, 2012, 08:11:56 PM
Will do! 
Title: Only runs in idle
Post by: Fulingbusen on November 25, 2012, 09:33:19 PM
Here's the video


https://www.dropbox.com/s/cjqlasz9rhf0uq3/IMG_2363.MOV

I removed the alt and starter and found nothing that looks wrong. The starter gear can be moved 2-3mm in and out, top right in the pic below
Title: Only runs in idle
Post by: Fulingbusen on November 25, 2012, 10:23:28 PM
Pic
Title: Only runs in idle
Post by: Fulingbusen on April 05, 2018, 09:24:09 AM
Decided to finally try to get this bike running.  It's been sitting in the garage for a couple of years.  A new sprag clutch is fitted and I'm trying to remember how it all comes together
Title: Re: Only runs in idle
Post by: threepot on April 06, 2018, 05:30:29 PM
Only done a sprag on the early engine with the inspection plate above. But I remember aligning the clutch shaft and helical gear was tricky!
Title: Only runs in idle
Post by: Fulingbusen on April 13, 2018, 02:59:38 PM
Ok, it's been so long so I don't remember if that was tricky on this engine. 

It's been started and seems to run ok mechanically.  Now I need to sync the carbs and find out where everything goes.

My coolant hose running down in between the carbs are running against the throttle linkage. 

Does anyone know how to run the wire to the oil temp?

(https://uploads.tapatalk-cdn.com/20180413/8bc14ada6cd117f9c025456facebcf1b.jpg)
Title: Re: Only runs in idle
Post by: threepot on April 16, 2018, 04:45:24 PM
Oil pressure switch? Just had a look at mine. Runs down alongside the engine block coolant pipe,then behind the water pump .

Just been down to 're set idle mix screws. Can just about get a small screwdriver bit under the carbs. Last time I tried was with a 'hot' engine! Not recommended! Middle carb was a whole turn out compared to outer carbs!
Title: Re: Only runs in idle
Post by: London_Phil on April 16, 2018, 04:55:17 PM
Don't forget, if were talking oil pressure switch, and  depending on age of engine, it can be on top case at rear  of right hand pot, on the newest, and underneath at rear on older engines.
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