occasionaly hard to start?

[salty21]

just a quicky, 9 times out of 10 my bike starts straight away but then out of the blue it will just crank over with the occasional burble for about 20 seconds before starting, this usually happens when setting off from work in the evening and always starts fine in a morning no matter how cold/damp it is.

the bikes done just over 20.000 miles and as far as i know is still on the origional cam chain tensioner, could this be the bike telling me it wants a new one or could it be something else?

oh and i have just done the valve clearances which were all within tolerances, number 4 ex valve's were a touch on the tight side but still within spec.
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[muffy]

what bike is it m8 and is electric or kick start you are having trouble with

[salty21]

cbr600rr3 electric start
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[iooi]

Sounds like a normal bike to me...

I would start to worry, when it does not want to start more than when it does.

Could be some muppet is playing with the throttle while you are working and pumping some petrol into the cylinder.
____________________
Just because my bike was A DIVVY, does not mean i am......

[Wafer_Thin_Ham]

[salty21]

did the oil change on saturday when i checked valves, made no difference apart from the usual smooth as silk feel you get with new oil , im only concerned as it has gradually occured over the last 5000 miles or so and used to start like clockwork before that. maybe its just getting on a bit is all
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[yen_powell]

Have you replaced or cleaned the sparkplugs lately or are they still the original from new? 20,000 miles isn't even run in properly let alone past it on one of those.
____________________
Blackmail is a nasty word........but not as nasty as phlegm!
XT1200Z and a DR350 in bits

[salty21]

yep new plugs recently, cleaned and gapped on saturday with all the other bits n bobs.

how many miles should i expect from her then?, i always though they were only good for 40-50,000 before major internals needed replacing
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[yen_powell]

[salty21]

[TUG]

[salty21]

got new plugs and air filter about 5 months ago, i just checked them to make sure the gap was still right as i have done around 5000 miles since then.

didnt want to start again today, fine in the morning then a bugger after work, i noticed that if i nip to the shop at dinner on it then its fine at home time and if i dont it's not, but like i say, its always spot on in the mornings
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[Hutchysrs50]

[Ingah]

[salty21]

yes i see the logic there, but new plugs are £60, quite a lot of money for an off chance, how often do you get faulty plugs?
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[chillpill]

[chillpill]

https://cgi.ebay.co.uk/4-X-NGK-IRIDIUM-SPARK-PLUGS-BR9EIX-PK4-MOTOCROSS-3981_W0QQitemZ200292741969QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item2ea260b351&_trksid=p3286.c0.m14&_trkparms=72:1683|66:2|65:12|39:1|240:1318|301:1|293:1|294:50

35 quid for 4 there

i dunno what plug rating is standard for the cbr rr i just used 9 as an example

[salty21]

yes thats what i thought but they are quite a rare plug apparently(IMR9C9HES), which seems a bit silly in such a common bike got quoted 70-80 quid at all the local bike shops, managed to find some on the net for about £50 i think, then add postage your looking at £55.

only 2 results on ebay and both are showing 13-14 quid each lol


https://shop.ebay.co.uk/IMR9C9HES%20?_from=R40&_trksid=m38&_nkw=IMR9C9HES+&_naf=1
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04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[TUG]

[TUG]

[salty21]

i do fit them myself the quotes from the bike shops were for plugs only lol, they were asking £20 each plug
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[TUG]