cooluncle
Oviraptor
If after the 3rd hand of cards you don't know who the mug is it's probably you..
Posts: 7
Reg: May 5, 2013 8:02:05 GMT
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Post by cooluncle on Jun 27, 2015 12:32:33 GMT
My 1981 GSX 750ET starts fine when cold, but when trying to start it while hot the starter will hardly turn over.. Go back later when the bikes cold and bang starts again.. Any ideas.. ??
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Post by zooma on Jun 27, 2015 12:41:05 GMT
My 1981 GSX 750ET starts fine when cold, but when trying to start it while hot the starter will hardly turn over.. Go back later when the bikes cold and bang starts again.. Any ideas.. ?? Usually a symptom of running rich EDIT.. my apologies, missed the bit about how yer starter motor isn't turnin' over when hot smiley-rolleyes008
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Post by zooma on Jun 27, 2015 12:55:19 GMT
Seem to remember havin' a similar problem on a bike years ago... replaced everything only to find it was a bad battery earth
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grebo
Velociraptor
Posts: 32
Reg: Nov 27, 2013 21:56:43 GMT
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Post by grebo on Jun 27, 2015 22:23:51 GMT
I'd say your problem is the starter motor.
Strip it and have a look at the brushes. Compression increases as the engine gets hot and will show up a failing starter motor .That's why it starts again when cooled down.
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Post by yoshi on Jun 27, 2015 23:58:04 GMT
your starter motor might just need a good clean out and a light going over with wet and dry ,if you bushes are worn out check with you local motor factors I got some bushes for a 1100 et starter motor (few years ago now) but they were out of a mini cost about 3 quid I had to file them down a few mil as they were longer than the Suzuki ones but are still doing their job ,yoshi
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Post by zooma on Jun 27, 2015 23:58:24 GMT
It could be the starter motor but as always with this kinda problem... start with the simple stuff like bad connections before takin' things apart Check the connections on the battery, the starter motor and solenoid... then make sure yer solenoid is working correctly.. sometimes a light tap with a hammer can free a sticking unit. If all these appear ok, starter motor out and thorough check as per haynes (or genuine) manual. Some good vids on the tube showin' starter motor overhauls starter motor
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cooluncle
Oviraptor
If after the 3rd hand of cards you don't know who the mug is it's probably you..
Posts: 7
Reg: May 5, 2013 8:02:05 GMT
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Post by cooluncle on Jun 28, 2015 6:16:04 GMT
Cheers for the quick replies..
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beesar
Oviraptor
cant be optimstic with a misty optic
Posts: 6
Bikes: xr69 rob north triples yamaha fj12
Reg: Jun 22, 2015 7:34:32 GMT
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Post by beesar on Jun 28, 2015 23:11:12 GMT
Battery, and or connections to, is/are the first things i would check.
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Post by katana on Jun 29, 2015 8:03:21 GMT
Worth a check but unlikely if it starts ok cold, when amps draw is highest. Electrical resistance tends to go up with heat so I'd pop for the starter being tired?
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Post by gixanator on Jun 29, 2015 11:55:27 GMT
if you do rebuild the starter don't forget to check the commutator to make sure it isn't "wiped". a narrow angle V needle file between each segment works wonders! sorry if I'm teaching you to suck eggs.
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Post by kokolis on Jun 29, 2015 18:18:29 GMT
Years ago I had the same with cb1100f a known bike for its weak starter motor/starter clutch. After new battery and brushes wasnt what it should be, after thoroughly inspection, I found that the armor was not magnetic to the core any more, after a new second hand starter motor was the problem disappeared.
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Post by captain chaos on Jun 29, 2015 19:28:18 GMT
cb1100f a known bike for its weak starter motor/starter clutch. and weak charging system. And weak camshafts. And weak camchain and tensioner. They are just crap.
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Post by kokolis on Jun 29, 2015 20:27:16 GMT
cb1100f a known bike for its weak starter motor/starter clutch. and weak charging system. And weak camshafts. And weak camchain and tensioner. They are just crap. Really? Weak tensioner ok, but boy oh boy, wheel spins with 200 and power wheelies on 2.
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Post by arnout on Jun 30, 2015 21:19:06 GMT
This is getting a bit off topic, but.. and weak charging system. And weak camshafts. And weak camchain and tensioner. They are just crap. Really? Weak tensioner ok, but boy oh boy, wheel spins with 200 and power wheelies on 2. kokolis, I think you're on the wrong website to start raving about "boulders".. I remember as a teenager working in a bike shop for a short period and being put to the job of salvaging a Vetter fairing from a CB900 with a seized engine (They all did that, I later learned).. I guess the shop owners reckoned the bike was totalled.. Having said that, these CB boulders are the prettiest looking bikes H*nda ever made.. Swapping the engine for a GSX-R1100 one is a well known recipe to produce a better package..Back on topic.. The electric starter page on Dan's Motorcycle Repair website is well worth reading.. Apart from the useful pointers already mentioned, the starter clutch might be the culprit.. Especially on the 1100 and bikes that have struggled with poorly charged batteries the starter clutch will have had a hard life.. On my own EFE the starter clutch must have endured quite a few kick backs as the clutch housing was missing bits, and the surface on the starter gear was heavily indented with roller imprints.. The thing that made hot starts difficult was however the warped steel plate covering the starter clutch.. This was rubbing on the starter gear (apparently heat makes it expand) effectively putting a brake on the engine.. Taking the clutch apart and hammering the warped plate flat was a quick cure.. Fitting a better rec/reg-unit and an ignition system that had less advance in the very low rpm-range now took away the origin of the problem too..
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Post by kokolis on Jun 30, 2015 22:40:28 GMT
As I ve owned 3 900 and 2 1100, I know that the 900 had problems but not all were seized, on the other hand the 1100F had a bulletprof engine, it was the 1100R that had rod problems. Is because this is a suzuki forum, means that all the other brands / models are shit?.....Oblivius?
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