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Post by wsn03 on May 12, 2015 7:51:33 GMT
When you check/ clean the carbs 2 things to look at:
1. Mine was stuttering once and it was a tiny hole in the diaphram on top of the carb - standard ones seem quite thin - it was very annoying, only went away when fully open accelerating. Constant stutter everywhere I went, low speed, high speed cruising etc.
2. The other problem I had - Remote tank, connect it to carbs, if fuel starts coming out after 20 mins or so you have knackered needle float valves - in my experience nothing but OEM replacement is worth considering. Would explain the smell of fuel (and stuttering as its flooding)
I fit an inline filter between tank and carbs, my days of shit in the carbs are long gone. Fuel stabiliser in winter and only Super Unleaded from BP (reduced or zero ethanol).
One suggestion I had during very poor running - change the plugs; I thought it was lame as the plugs hadn't done that many miles - made all the difference, bike ran like new again. I'm still confused about that.
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Post by buggerlugs on May 12, 2015 19:33:56 GMT
Thanks for all the suggestions, I have plenty to look at now. I won't be able to do anything till the weekend now as I have lot's on at work. Had to order a new plug spanner from ebay as well, gawd knows where mine has gone
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Post by rusty on May 12, 2015 20:30:55 GMT
You'll find it once the new one turns up;-)
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Post by buggerlugs on May 12, 2015 21:06:17 GMT
You'll find it once the new one turns up;-) Guaranteed
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Post by slingy1052 on May 13, 2015 8:35:08 GMT
When you check/ clean the carbs 2 things to look at: 1. Mine was stuttering once and it was a tiny hole in the diaphram on top of the carb - standard ones seem quite thin - it was very annoying, only went away when fully open accelerating. Constant stutter everywhere I went, low speed, high speed cruising etc. 2. The other problem I had - Remote tank, connect it to carbs, if fuel starts coming out after 20 mins or so you have knackered needle float valves - in my experience nothing but OEM replacement is worth considering. Would explain the smell of fuel (and stuttering as its flooding) I fit an inline filter between tank and carbs, my days of shit in the carbs are long gone. Fuel stabiliser in winter and only Super Unleaded from BP (reduced or zero ethanol). One suggestion I had during very poor running - change the plugs; I thought it was lame as the plugs hadn't done that many miles - made all the difference, bike ran like new again. I'm still confused about that. In my experience, NGK's are VERY sensitive to excess fuel. Once wetted a couple of times, or even once, that's enough for them to die. No cure but replace. Don't ask me why, I have yet to fathem why a plug, designed to ignite fuel in a harsh environment can't survive being wetted by fuel. Tried taking them out and hitting with blow torch etc, makes no difference. So I would say ANY problem with fuel and once you are sure the carbs are A ok and not going to flood again, change the plugs. Makes a huge difference but bloody annoying.
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Post by wsn03 on May 13, 2015 9:16:00 GMT
When you check/ clean the carbs 2 things to look at: 1. Mine was stuttering once and it was a tiny hole in the diaphram on top of the carb - standard ones seem quite thin - it was very annoying, only went away when fully open accelerating. Constant stutter everywhere I went, low speed, high speed cruising etc. 2. The other problem I had - Remote tank, connect it to carbs, if fuel starts coming out after 20 mins or so you have knackered needle float valves - in my experience nothing but OEM replacement is worth considering. Would explain the smell of fuel (and stuttering as its flooding) I fit an inline filter between tank and carbs, my days of shit in the carbs are long gone. Fuel stabiliser in winter and only Super Unleaded from BP (reduced or zero ethanol). One suggestion I had during very poor running - change the plugs; I thought it was lame as the plugs hadn't done that many miles - made all the difference, bike ran like new again. I'm still confused about that. In my experience, NGK's are VERY sensitive to excess fuel. Once wetted a couple of times, or even once, that's enough for them to die. No cure but replace. Don't ask me why, I have yet to fathem why a plug, designed to ignite fuel in a harsh environment can't survive being wetted by fuel. Tried taking them out and hitting with blow torch etc, makes no difference. So I would say ANY problem with fuel and once you are sure the carbs are A ok and not going to flood again, change the plugs. Makes a huge difference but bloody annoying. That is very strange, and interesting. I've not had the problem since, but that said my carbs these days are spot on, back then there had been all sorts of poor set up experimenting by someone who didn't really know what they were doing.
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Post by Kristjan on May 13, 2015 10:18:02 GMT
slingy1052 is absolutely right, nothing but fucked ngk's when you have too rich mixture or flooded engine. I've tried both and Densos seemed to survive better.
Shit in my carbs is past when I decided not to use the reserve position of the fuel tap. And overfilling the carbs was not only shit in needle valves, but shit in fuel tap too, which made the vacuum valve unable to go shut. Now I've ridden 1000 km, never switched to reserve, and it's fine.
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Post by buggerlugs on May 16, 2015 18:52:21 GMT
I had chance for a little fiddle today, was a bit pushed for time, been to the MCN show today, which wasn't planned, but anyway... Took the plugs out, 3 were a nice sandy colour, and one was a nice sooty black !! I drained the float bowls out, but nothing untoward came out. I stuck the plugs back in and fired it up, just to see if anything different happened, it didn't So tomorrow, when the GP is finished I'm gonna take the tank off and get the hammers out. gsexr is sending me a set of dyna coils, and I've just ordered some new NGK plugs. I'm gonna have the float bowls off and check the main jets, see if anything dodgy turns up there.
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Post by jaydee on May 16, 2015 19:14:45 GMT
Taking off the bowls and cleaning from the inside is the way to go. Gave up using drain screws as I find the rusty sediment sitting in the drain well acts as a filter and ironically only clean fuel comes out. The more shit in the bowl, the cleaner the fuel after it filters through. Ib still think your problem is float needle related. At least you can narrow it down to a particular carb that feeds the sooty plug.
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Post by bigkenx on May 16, 2015 19:17:01 GMT
Give the pilots a blast with carb cleaner
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Post by buggerlugs on May 16, 2015 19:35:42 GMT
I hope to have it sorted tomorrow, hoping to be sending my van to be 'camperised' very soon, so need the bike for work
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Post by bigkenx on May 16, 2015 22:55:14 GMT
Are you having it sprayed pink and a black leather interior to have it camp er rised
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Post by buggerlugs on May 17, 2015 7:08:20 GMT
Are you having it sprayed pink and a black leather interior to have it camp er rised Purple ! the bedding will be pink...
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Post by rusty on May 17, 2015 8:28:16 GMT
Give the pilots a blast with carb cleaner I took all mine out and soaked them overnight in carb cleaner
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Post by buggerlugs on May 17, 2015 15:06:21 GMT
Had the float bowls off and checked the jets, nothing obvious to see. No snagged pipes or wires. It ticks over lovely, as soon as you Rev it it goes all rough and lumpy. Gonna book it in with Bsd and have it on the dyno to see what's happening. Fed up now
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