Recent content by IronJim

Re: CB400F Jetting issues and running rich Update So I finally got her fired up and running. Did a vacuume sync today and will be giving her a run over the weekend. Thanks for all the help and advise you have given me it has taught me so much.https://vimeo.com/172025084 If you've never...

Re: CB400F Jetting issues and running rich I cant verify that for sure !! lol

Re: CB400F Jetting issues and running rich The screws are new, they came with the rebuild kit (probably the only thing used i used were the screws and the seals)

Re: CB400F Jetting issues and running rich Thanks Bruno Really appreciate the pictures and directions, I'm taking the carbs home with me this weekend so i get to work on them all weekend, Ill update you of my progress when i,m back. Thanks for all the advice guys i really appreciate every...

Holy crap !!! Im looking for a CB400F 1975 tank.... Got anything hanging around ?

Re: CB400F Jetting issues and running rich No the coils are set up properly 1,4 2,3 Managed to get the bike idling nicely now and can even throttle all they way through without any hiccups, Cylinder 1,4 seem to kick in once the bike has warmed up. I cleaned the carbs thoroughly and replaced...

Re: CB400F Jetting issues and running rich The coils operate as follows 1,4 - 2,3. Iv currently got 2,3 running perfect but 1,4 are my issues currently, Took them both off to see if they have a spark and they DO have a spark so no issues with firing. my next idea is to have a look at...

Re: CB400F Jetting issues and running rich So i managed to get the bike idling really nicely, got her all warmed up and put some new plugs in. Started her back up and ran the bike for 10 mins (with fan in front) pulled the plugs and here is the results. Weirdly cylinder 1 and 4 took a while...

Re: CB400F Jetting issues and running rich UPDATE ! Seemed to have turned a slight corner today. After cleaning the carbs again taking them apart completely and going over everything with a fine tooth comb (copper wires actually) put them back together new plugs, i also benched synced them a...

Re: CB400F Jetting issues and running rich UPDATE ! Seemed to have turned a slight corner today. After cleaning the carbs again taking them apart completely and going over everything with a fine tooth comb (copper wires actually) put them back together new plugs, i also benched synced them a...

Re: CB400F Jetting issues and running rich Video is now un privatised. So the needle is fully down inside the carb. So the shim position is at the top of the needle (furthest away from the needle tip)

Re: CB400F Jetting issues and running rich Update So went back through the carbs stripped them again put all OEM parts back in the bike along with original jets, float heights set to 22mm, Bench synced and vacuum synced, the only thing iv changed is the needle height which is on setting 5...

Re: CB400F Jetting issues and running rich Solid advise that i will take in to consideration tonight when working on the bike. I currently have #40 pilot installed but i also have a #38 which i will have a play around with as well. Last time i used the #38 the bike did run a little better...

Re: CB400F Jetting issues and running rich Thanks for the quick reply. So the answer is yes trying to get it to idol properly (currently struggles without a little throttle). Mixing screws are 2 turns out although i have had them out further to see if it makes any difference but the bike...

Evening gents Been having some issues with my CB400F. Currently trying to tune for pods but its a total nightmare, iv tried all sorts of combinations from smaller jets to larger jets changing the float heights and even moving the needle, Lots of combinations iv tried but just cant find the...