Recent content by Houghton

Well, I changed the head 0 rings and the compression remained the same, so I have tried a different gauge and it reads 115psi whereas the trials bike now reads 140psi (which is what it should be). I have pulled the barrel to have a better look and check the ring gap, the crosshatching is still...

Well, the compression tester arrived this morning. I have done three consecutive tests and it read 95psi each time. I wasn't sure if it was a faulty gauge so I tried it on my trials bike and that was 125psi. I took the exhaust off to see the piston, it still looks new and there is no carbon...

I'm using ipone fully synthetic at 50-1, I have also tried elf. The airfilter is new and the airbox is clear. I made use all the electrical connections around the coil were good when I changed that but I haven't checked everything else. I'm going to spend tomorrow afternoon messing with it so...

I don't think so. I have been right through the range of pilot jets all in the same day and there was no difference (to the specific misfire).I was pretty convinced it was a carb/jetting issue for a while, to the point I bought another carb, rebuilt it and went through all the jets again.

I have actually changed the coil, as it was way cheaper than the stator I started with it on that side of things. To be honest it's no worse when hot. It's strange, it starts 1st or 2nd kick hot or cold, idles fine, makes good power on top but just runs crap everywhere else. Compression tester...

I Have just ordered a compression tester to confirm its ok but I'm pretty confident it is. I have a new plug cap on there and I tried a hotter plug yesterday, that also made no difference. I'm gunning 98 octane fuel, avgas is 100 I think so might be worth a try if I can get any. I am now...

Piston and rings are less than 10hrs and the bore is in good shape. The misfire was there before I changed the piston, at the time I thought it could be the cause.

Well, I'm at a loss now. I have tried the leaner needles and it was clearly running lean but I still had the same symptoms that made me believe it was rich. In the meantime I have swapped the carb, reeds and coil, none of which made any difference to the misfire. The power valve is operating...

Thanks for the reply. The n3eg needle im using is pretty new , I wasn't sure at first if my carb it's self was worn so I bought a good condition secondhand one and changed the seals etc but it didn't change anything. The biggest affect I see is changing the clip position but I'm now on the...

Hello all, I have an 04 300 ec that is rich at the bottom half of the rev range. I'm running 38 pilot, 175 main, N3EG on the leanest clip and the air screw 2.5 out. I don't really want to go down to a 35 pilot and as I'm on the leanest setting for the needle I thought that would be the best...

That's great. exactly what I was hoping to here! Will report back when they arrive and are fitted.

OK thanks. I think the float height is correct, with the carb up side down and the bowl removed the distance from the gasket face and the bottom of the float is 16-17mm. I have ordered a N3EG and some jets to play about with so will give it a go as soon as they arrive. The way the bike's set up...

Hi everyone, I'm new to the forum and just getting back into biking after a 10 year break. I have just bought a 2003 300 ec. The bike has an annoying misfire in the mid range that it struggles to pull through. I have changed the plug, re packed the can and the power valve looks to be operating...