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				petrol in the crank case breather
				Posted: Wed Aug 06, 2008 9:54 pm
				by steve87
				i have taken the crank case breather pipe off the air box on my h1, and i have found that there is a really strong smell of fuel, and a little bit of fuel dribbeling out? 
do i need to service my carbs and needle, as the rubbers are knackered, and fuelling too much?
any ideas would be brilliant
			 
			
					
				Re: petrol in the crank case breather
				Posted: Thu Aug 07, 2008 12:15 am
				by zimm
				its probably the float valve's or the o-rings round the float valve seats (brass bit) ... 
strip carbs time im afraid, it'll get worse relatively quickly once it's started, and the excess fuel can cause premature piston/cylinder wear as it washes all the oil off them.
i've had this twice, and its been the o-rings both times, which is a lot cheaper than worn float valve things.
			 
			
					
				Re: petrol in the crank case breather
				Posted: Thu Aug 07, 2008 11:10 am
				by steve87
				through wemoto i have found a carb gasket and  float kit, is this what i will need?
would this lead to hot start problems as too much fuel is going down?
steve
			 
			
					
				Re: petrol in the crank case breather
				Posted: Thu Aug 07, 2008 11:19 am
				by steve87
				
			 
			
					
				Re: petrol in the crank case breather
				Posted: Thu Aug 07, 2008 11:48 am
				by zimm
				that'd do it 
doesnt say if its a full set or just one carb though .. and at £15 a carb thats expensive.. i'd just order the o-rings from cradley, be a few quid at most i'd have thought.
 
			 
			
					
				Re: petrol in the crank case breather
				Posted: Mon Aug 11, 2008 7:30 pm
				by steve87
				i have replaced the o-rings on the metal cylinder that the needle goes inside. this seems to have made the bike much much better. are there any other things like this you would avise checking as the bike is 20 years old, and i have had torelace most rubbers.
also
the choke cable doesnt pull the choke very far out, and the choke seems to be slightly out all the time , but if it is in, the cable wont pull the choke on?
anyideas
			 
			
					
				Re: petrol in the crank case breather
				Posted: Mon Aug 11, 2008 8:00 pm
				by zimm
				lube up the runner for the choke, and make sure there is slack in the cable when the choke is off (there's an adjuster on it), wouldnt worry too much about not getting FULL choke, you shouldnt ever need it anyway, but if the choke is sticking on the bike wont be running quite right.
as long as the little "hooks" on the arm arent holding the choke plungers open its fine.
			 
			
					
				Re: petrol in the crank case breather
				Posted: Tue Aug 12, 2008 11:42 am
				by steve87
				cheers mate. i think i have too much tension in the cable. will sort that out today. apart from that its been running great and has stopped it overheating...... and hot start problems.
would it be wro to say i love you.
plus did a track day on the bike. which was wicked
			 
			
					
				Re: petrol in the crank case breather
				Posted: Tue Aug 12, 2008 1:45 pm
				by zimm
				if you havent got the right cable and switch gear (there's a few variants and they all look the same) then its impossible to get any slack.. i get round this by "modifying" the bracket that holds the cable to the carbs with some hefty pliers 
what track did you get out on ? we want pics !
 
			 
			
					
				Re: petrol in the crank case breather
				Posted: Tue Aug 12, 2008 8:57 pm
				by steve87
				how do you up load. it was donington and wow it was amazing. the best thing ever. I DID A BRAND NEW GSXR &%) through the esses. it was brilliant, down the straight, he hit the brakes, thenI passed a nc30 and him, on the brakes, and tucked it round. i love my bike 

  show me how to up load and ill put them all on 

 
			 
			
					
				Re: petrol in the crank case breather
				Posted: Tue Aug 12, 2008 8:58 pm
				by steve87
				thats a gsxr 750 lol
			 
			
					
				Re: petrol in the crank case breather
				Posted: Tue Aug 12, 2008 9:05 pm
				by steve87
				
			 
			
					
				Re: petrol in the crank case breather
				Posted: Tue Aug 12, 2008 9:16 pm
				by zimm
				looks like you had fun mate .. that Jason T off 400gb on the nc30 ?
nice RC8 in the background too 

 
			 
			
					
				Re: petrol in the crank case breather
				Posted: Wed Aug 13, 2008 9:56 am
				by steve87
				yeah it is jason, im his best man at his wedding, hence the track day. panned his ass lol!!! and the rc8 was ok, not a zxr though!!
			 
			
					
				Re: petrol in the crank case breather
				Posted: Wed Aug 13, 2008 1:32 pm
				by zimm
				hehe, another NC battered by a zxr .. 
RC8's make me go a bit wibbly tbh .. not many modern bike's will do that, maybe the new R6... now if they made a small-bore 4 cylinder version of the RC.......