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There's 3 bar of fuel pressure. I am under the impression that intake boot is leaking / not sealing right, could that also be a cause if he fuel atomising properly? I know when we have leaks on the quads intakes it's an absolute biatch to start

Hi guys I am on the race team at my college and we are using a 1 cylinder SOHC 450 exc engine off a KTM endure. We have converted this one to fuel injection and it has run before, but at the moment it won't start. I know this is a forum for quads but I was hoping some of the gurus might have...

Loads of possibilities: rings is usually likely but you could have bad valve seating, warped head, busted gasket...this all depends on what lead to it getting bad compression ie did it happen fast or over a period of time If you haven't tested compression for yourself it might be worth getting...

Get a piece of ally tube against the teeth and give it a tap in the right direction with a small ish hammer to unstick it (make sure you use ally or you'll trash the teeth. Mine did this when I took the bike apart and cleaned it, didn't re oil it so it was stuck when I put the engine back together

I never used a specific tool. One time I used 2 lengths of wood bolted together and opened them like scissors but this need the jug off to get access.hmmm Still, loosening bolts could relieve a bit of stress

i mean the crankcase bolts thought they were called main bolts

take time and invest in a decent set of feeler gauges for when you set the piston ring gaps. its not too hard to replace piston and rings, personally i wouldnt wanna pay a shop to do it for me

if youre still tryig to get the jug off and you think its seized to the base maybe get the motor out and then back out the main bolts a little way to relieve some of the stress clamping on the jug?

Thanks for the tip man, I'll keep it in mind:tup:

CJ, think i will get something similar to keep track of hours but i really wanted a rev counter with a needle cos i think they look awesome!! Hobbyguy, yeah i understand that the 4th and 5th wire are for a back light which you can wire to headlight switch so it lights up in the dark

Cool might have a go and make video or tutorial and post on here if it works so anyone who fancies doing it can have a go Thanks guys

Ibjamm, I thought the same but I am just unsure what the 3rd wire does? Does it fix to the coil and then count the times the current is sent to the spark plug?

Yeah that would be helpful thanks dude. Do you think one of this kind of tachos would work on an atv?

Hi guys I was thinking of sticking a rev counter on my bike for a bit of a project and a laugh Something like seen here: http://www.amazon.co.uk/Universal-Scooter-Tachometer-13000RPM-Motorcycle/dp/B00EC7HBPY Before anyone says anything I'm not interested in getting ripped off with one...

Hi guys, Took the carb down and main jet was full of dirt. On another note, I went to a wiseco std 10.25 piston and cone filter and it seems to run pretty lean on main jet. It's got a 120 in it now so could someone recommend a new size who have a similar set up? Cheers Tom

Ok thanks guys :tup:

Dude I'd love to but they don't exist in UK and cost like £70 after shipping. Do you think that's the problem though?

hi guys, I rebuilt my motor over summer with a hone and a wiseco std piston and i worked first time but needed a tune. i haven got round to this ill this weekend since ive been at college. Its been coughing farting all weekend and i decided i had a vacuum leak in the crappy boot so i...

Venom. Yeah the BB is alright, pretty fast now I've worked the motor over but it's never gonna beat a raptor/warrior

All of the above^ Also check oil levels and check for leaks. Once it's warmed through, drive it like you stole it to seat the rings to the bore