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Starter motor clunking when the air is cold.

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Post  Ross. Sat 15 Sep 2012, 12:35 pm

This is a strange one to me.

When it is cold. Like 5am in the morning or 10pm at night my starter motor makes a clunking sound as it engages.

It does not do this if the engine is warm. Or of the air temp is warmish and it is day light.

The battery is fully charged.

Any ideas? Besides that my starter motor is on the way out maybe?

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Post  gus Sat 15 Sep 2012, 3:47 pm

2wa might know .Full charged battery though does not mean "good ".How old is it 3 years or more ?
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Post  Ross. Sat 15 Sep 2012, 4:52 pm

gus wrote:2wa might know .Full charged battery though does not mean "good ".How old is it 3 years or more ?

No idea how old the batt is mate. Came with the bike. Even though i have fullservice hsitory this does not record details.

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Post  paul Sat 15 Sep 2012, 5:19 pm

Probably stating the obvious , but I suppose you've checked all the connections & side stand / clutch switch ...........otherwise as Gus said may be the battery .............hopefully not the starter

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Post  2wheelsagain Sat 15 Sep 2012, 5:28 pm

Ross. wrote:This is a strange one to me.

When it is cold. Like 5am in the morning or 10pm at night my starter motor makes a clunking sound as it engages.

It does not do this if the engine is warm. Or of the air temp is warmish and it is day light.

The battery is fully charged.

Any ideas? Besides that my starter motor is on the way out maybe?

Mine was worse at cold and it put more load on the starter. I can't remember if you have a 1250 or not but it sounds familiar Rolling Eyes

Do a search for "starter clunk" (search won't work on my tablet)

If you have a 1200 I'm not sure if its the same issue as the starter internals are different. But if its a 1250 its got about 500 starts left. Trust me Evil or Very Mad

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Post  gus Sat 15 Sep 2012, 5:48 pm

Have the battery load tested .Mine read fully charged but failed the load test .New battery fixed the problem i was having .
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Post  Ross. Sat 15 Sep 2012, 8:10 pm

I have found this https://nswbandits.forumotion.net/t1600-starter-clunk?highlight=starter+clunk

It only clunks when the start button is depressed and it is one clunk. It does not do this when i release the button.

I will get the battery load tested first.

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Post  kewwig Sat 15 Sep 2012, 8:36 pm

There have been issues with magnets coming unglued from the interior and buggering things up. Worth checking as they are expensive to replace
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Post  paul Sat 15 Sep 2012, 8:41 pm

kewwig wrote:There have been issues with magnets coming unglued from the interior and buggering things up. Worth checking as they are expensive to replace






not sure , but are they the same starter motor in the 1200 as the 1250.........I seem to remember someone saying they were a different part number when 2WA was having trouble Question

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Post  2wheelsagain Sat 15 Sep 2012, 9:16 pm

paul wrote:
kewwig wrote:There have been issues with magnets coming unglued from the interior and buggering things up. Worth checking as they are expensive to replace






not sure , but are they the same starter motor in the 1200 as the 1250.........I seem to remember someone saying they were a different part number when 2WA was having trouble Question

Very different Paul. The 1250 is not interchangeable with anything else and very cheaply made inside compared to the 1200 starter.

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Post  paul Sat 15 Sep 2012, 11:14 pm

2wheelsagain wrote:
paul wrote:
kewwig wrote:There have been issues with magnets coming unglued from the interior and buggering things up. Worth checking as they are expensive to replace






not sure , but are they the same starter motor in the 1200 as the 1250.........I seem to remember someone saying they were a different part number when 2WA was having trouble Question

Very different Paul. The 1250 is not interchangeable with anything else and very cheaply made inside compared to the 1200 starter.






Great .............. Rolling Eyes

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Post  Ross. Tue 25 Sep 2012, 10:40 am

How about a loose negative battery terminal? I thought I would check the charge in the battery with a different battery charger I have. Putting the clip on the negative terminal and the bolt was loose.

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Post  Ross. Mon 15 Oct 2012, 10:45 pm

I have found the problem. Its the choke. If I have the choke on FULL when cold starting it is causing the "lock up" of the starter motor. If I go to FULL and then back it off just a touch. The Bike will then start with no problems.

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Post  Kaupy1962 Mon 15 Oct 2012, 11:15 pm

Sounds like your timing could be slightly advanced and it firing to early before TDC
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Post  Ross. Tue 16 Oct 2012, 7:50 am

Kaupy1962 wrote:Sounds like your timing could be slightly advanced and it firing to early before TDC



I did fit a holeshot 5 degree advancer and then this problem started.

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Post  paul Tue 16 Oct 2012, 9:21 pm

Ross. wrote:
Kaupy1962 wrote:Sounds like your timing could be slightly advanced and it firing to early before TDC



I did fit a holeshot 5 degree advancer and then this problem started.





Should be easy enough to check then Very Happy

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Post  Kaupy1962 Tue 16 Oct 2012, 11:08 pm

That'll be it. Fires too early and sounds like it fighting itself. Turf it and buy a TRE
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Post  Ross. Wed 17 Oct 2012, 10:13 am

Kaupy1962 wrote:That'll be it. Fires too early and sounds like it fighting itself. Turf it and buy a TRE



What is a "TRE"?

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Post  paul Wed 17 Oct 2012, 7:05 pm

Ross. wrote:
Kaupy1962 wrote:That'll be it. Fires too early and sounds like it fighting itself. Turf it and buy a TRE



What is a "TRE"?





Timing retard eliminator...........I presume they work on the 1200 same as the 1250 ????


Last edited by paul on Wed 17 Oct 2012, 7:08 pm; edited 1 time in total

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Post  Ross. Wed 17 Oct 2012, 7:07 pm

paul wrote:
Ross. wrote:
Kaupy1962 wrote:That'll be it. Fires too early and sounds like it fighting itself. Turf it and buy a TRE



What is a "TRE"?





Timing retard eliminator



o.....k... Never heard of one of these before. Please explain.

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Post  paul Wed 17 Oct 2012, 7:13 pm

http://www.twowheelforum.com/showthread.php?t=3141



Not positive if it works on the 1200 motor though ????

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Post  Ross. Wed 17 Oct 2012, 7:17 pm

paul wrote:http://www.twowheelforum.com/showthread.php?t=3141



Not positive if it works on the 1200 motor though ????

Ok. Maybe.

I have asked Dale who made the 5 degree thingie I have fitted and he says it might be my starter clucth on the way out.

If I back the choke off just a tiny tad when cold it starts fine. I think I might try a tune up first.

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Post  Kaupy1962 Wed 17 Oct 2012, 11:10 pm

Sorry Ross I forgot you had a 1200. The gsx750, 1000, Hayabusa. 1250 and I'm guessing 1200 Bandits all have the timing retarded in 1st to 5th gear. A TRE fixes the problem. I don't see how the 1200 would be any different.
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