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1996 yz 400


dsb2014
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If its valve clearance , it will be hot start that be the prob,. that pilot jet is blocked, as soon as choke is off , pilot jets does first 1/8 throttle

then venture speed brings in the neddle jet, then main when on Wide open throttle,,

By all means check the clearance tho ,,it all helps the running,,

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Hi black hat appreciated muchly. Wen I had the carb off I can see right throuhgt the jets and I've notice the needle sticks out a lot I might check the clearince today and go over the carb again. Does the needle cause any of the problems stated

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I've just read some where that once she starts from cold QOUTE since this model is equiped with a accelerator pump if the engine is raced (the throttle fully opened and closed ) the air fuel mix will be to rich and engine may stall. Also unlike a 2 stroke engine this model can idle UNQOUTE. Wen I've started her I have let it run for a min and began riding not hard just steady I'm thinking after reading this that this is reason behind the stall because um not allowing 2 3 mins to warm up. What does any 1 think ???????

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Sounds a bit odd to me, you can't ride it till it warms up and you have to race? the engine, not how most bikes are built but I suppose that if that's what it says in the manual then that's what you have to do.

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Early Kawasaki"s were like that, used to rev theyre nuts of when on choke,[ great way to fk the cams, oil slow to reach them ] I think your too lean , [ mixture] :eusa_think:

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I've tried again to start her but nothing agaun. Valve clearences are in spec carbs been cleaned again. I've checked the spark again it's not a massive wow blue 1 it'd more yelloe. I bought a iridium one some 1 said they never go wrong so was gonna try testing the generator and coil

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So I've unplug the generator wires today got the old multi meter out. I've checked all the phases and no reading came from it I crossed andvcheckrd differentconnections nothing. So i vr gone deeper and taken the fly wheel off and checking the coils. I have put the black wire from my Meter on the the pick up senser and touched the red wire on each coil all of them read 56.2 I don't know if this is spec or not because I've search every where to no avail. Can any 1 shed any light on this as there's a spark not a massive 1 but there's defo 1 there. I've also put a new plug in. Thanks guys in advance

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Are you measuring Ohm"s ?

Pulser coil- Wire Red = 7.5 ohms - + 10%

Wire green- 5.0 " " - + 10%

Charge coil - br-b - 305 ohms- + 10%

br-r - 50 ohms -

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I've tried every wire and nothing. Yeah measuring in ohms I've now taken the stator off still no readings from the connecter. If I put the black lead on the pick up and touch a coil I get a reading 56.2 and nothing else.

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