balancing carbs

[ian rycroft]

hi what do i need and do to balance the carbs on my 93L it has cv carbs that have been dynojeted,when i rev the bike it comes down to 2,000rpm and then takes about 5sec to come back to tick over,thanks.Ian

[Glitchard]

Mine dose the same.ZXR400 L 94. Is that what it is the carbs need balancing?????????? When you lean the bike to the Left the revs go up and then lean the bike to the right they go down again. Strange a.........



Cheers for the replys. I will try that on the weekend.

[parby81]

leaning the bike to the left (as though its on its side stand alters the way the fuel is sitting in the float bowls and can cause them to act as though the float is too high. As for the hanging revs, it is either a leak at the inlet rubbers, or the carbs are running a bit lean at idle. turn the screws out a quarter of a turn and see how it goes. you can do this whilst you are balancing the carbs.

[extonyg]

the revs used to hang on for a few seconds on my L1 was all down to a air leak around the airbox where is bolts to the carbs and inlet rubbers leaking.a good way to test your inlet rubbers is with the bike running spray the inlet rubbers with wd40 or something and if the revs go up or change at all it means they are leaking, and ye also the mixture screws can cause this sort of problem as well.

[ian rycroft]

i forgot to say mine has an AMS ram airbox,ian

[extonyg]

i dont think ram air box will make a difference with balancing them as you have to have the airbox off to balance them up anyways. the needles and jetting will have to be altered for the ram air box so you might have to have a look into that.

[ian rycroft]

got it narrowed down to a air leak damed if i know where,when i rev it it comes down to ,2,000rpm and if i flick the choke it comes straight back to tick over which means its weak, so when i flick the chock it richens it, the inlet rubbers are the first to be changed, so where do i buy new ones?

[extonyg]

ye inlet rubbers are common, with the bike running if you spray the inlets see if the revs change that will tell you if there leaking.if not just take them off and have a look at them its mainly the underpart that bolts down to the head the perishes and cracks.i ordered mine through a local garage that i no.someone on here will tell you where to order them from though.i think people get there parts from cradley or somthing im not quite sure your have to check.

[RedexRobB]

yes, Cradley are always good