splutters wen i open throttel fzr400 1wg

[querxy2270]

got bike last week rode it bak in rain from hell it seemed to run ok but i didnt realy open it up as weather was real bad,got it started again and if i just give it a bit ov throttle it goes ok try opening it splutters like hell plz help

[Evilchicken0]

Clean your carbs it's sounds like the main jets might be a bit dirty.

More than this we'd need to know which model bike you have - you have twin round headlights, do you have air intakes ? are these above or below the headlights ?

Yes above = 3EN1

Yes below = 3en2

No = genesis or 2TK (2tk has a single seat)

[querxy2270]

thanks for speedy reply,yes twin head lights .inlets above the lights,i was told its an 88 1wg genesis on a g plate,it a import aswell.its great to be in touch wiv peeps who no so much,i was going to put it on ebay cus not that clued up on bikes and get another but i want to learn so since finding this site im keeping it as im sure wiv your help i will get it runing ok.its no air filter in ive found out tday,also got diff end can on it,i will put sum pics on wen i sus out how to,

[Evilchicken0]

Well, when you find the people who know so much, let us know where they are

Right then
You have a 1988, FZR400R 3EN1 EXUP

Put an air filter it in !!! you can use a standard one (they're the same as an FZR600 3HE) or use a K+N. The K+N may cost more, it wount give you any more power but it's washable so over time you save some money. Because the air filter is missing the carbs will need cleaning.
So what kind of tools do you have and is there anybody who can help you if you get stuck ? It's not a difficult job though and the bike runs to begin with ... I mean what can possibly go wrong

[Evilchicken0]

From your other thread -

those 3 things are the jets. get a big sheet of white paper to work on (so you can see anything you drop). Work on one carb at a time. Take the top off the carb (theres a spring under it) and get some carb cleaner spray in there, get all the crap out, if you see a little hole spray down it.
Carefully take one jet out at a time - with a screw driver that fits and look through it, thenspray through it and then spray again.
Bosh it together move to the next

[querxy2270]

hi i read sum were on hear about checking the exup on bike ive looked at my egsawst cant speel it tho lol.and there is nothing on it to operate any valve,so im not sure if its an exup or not or weather over the years its had diff bits put on it to make you think its the 3en1, how can i find out for sure wot model bike ive got.thanks

[Evilchicken0]

Look at the CDI, it's in the tail somewhere it should be marked 3en1.
Or you have 285mm dia disks with 4 pot calipers, 38mm dia forks, your clip-ons are above the top yoke, the swingarm is braced, the tail plastics finish under the riders seat ..... or look here http://www.madsi.co.uk/models.aspx

When you turn on the ignition do you hear a weeep, weeep noise ?

[querxy2270]

you was right,3en1 exup but sumone has changed the can on it,will this matter or can they run ok wiv out the exup working.
i will check to sea if its got that plate on were the cables cum out.

[kawasakiinit]

fetch it round here i can do it with my eyes shut now

get some carb cleaner with a straw to blast it through the small holes which are everywhere as well as air line if you can , bench sync the fuel heights (this is ultra important as i found out recently ) inspect diaphragms very closely for small pin holes . take out the floats and needle valve seats also and blast the fuel routes out with air line as well as cleaner . finally my pilots are 3 and a quarter turns out each and the main needles have been dropped 1 notch due to it having an open can and it was running way to rich when at full chat ...

standard pilots should be 3 and a half turns out +or- half a turn ..

might be a good idea to check the valve clearance while you having a day of it.

dave

[Evilchicken0]

The can will make very little difference. At low revs (up to 8000) the exup regulates the exhaust size to run at optimum for the engine. Above that the exup is the pinch point in the exhaust so all the can does is make it louder, which is nice enough as long as it's MOT-able.

I think your bike is running lean, from not having an air filter, then a little bit more lean due to the can. After that the carbs are probably dirty from no air filter, so basically the mixture's all to cock. Put a filter in and clean the carbs and you'll probably find it comes back to something a bit more usable. After that the carbs should be balanced.

I'd recomend you service the bike with a change of oil and coolant, oil and fuel filters, and put a new set of spark plugs in.