Kawasaki GT750 Air screws

Well my Kawasaki book of lies tells me to screw the air screws in and count
the turns - this is great however they are:

1 1-3/4
2 2-3/4
3 3-1/4
4 1-1/2

So my guess is something is wrong here! Can anyone confirm what they should
be, or a good starting point? (I am on 2 turns out at present)

Cheers

/d

 

Ovenpaa says...

Haven't a clue, but when you find out shout me and I'll drop the vacuum
gauges over for you to set the bloody things up properly. I know what
road, just need the number.

 

Haven't a clue, but when you find out shout me and I'll drop the vacuum

I spent the morning checking every single electrical connection, and the
afternoon setting the carbs with gauges, and checking the timing - they are
both spot on, I have even checked the float heights, and it still runs like
a sack of shite above 4000 rpm, however you are welcome to come over and
take it around the block - I have run out of ideas now so I will consider
anything including napalm.

No 21

/d

 

Ovenpaa says...

Sounds like the main jets and/or emulsion tubes could do with a serious
clean out.

 

Ovenpaa says...

OK.

Now this may seem like a stupid question, but you haven't managed to
block the inlet to the airbox in some way, have you? Pair of waterproofs
casually bunged under the seat, or something similar that I have never
done myself, oh no, not me.

 

According to the Haynes BoL, 2 screws is correct.

 

Sounds like duff coils to me.....

 

Or plug leads?

Ron Robinson

 

One plug lead - possible. Two or more - unlikely. Coil is more likely.
Exactly the same thing happened to my GT. All the symptoms were of fuel
starvation. Except it was a coil breaking down.

 

Ovenpaa let forth with a mighty belch and uttered :

It can but save your pennies for now.

Get a multimeter on the coils before replacing them. Try and borrow a strobe
lamp just to make sure the ignition is advancing. Do you have access to a
colour-tune?, they can be useful.

Going to a Kawasaki dealership is a good plan. Take the ignitor and coils
with you and get them to test them.

Before you do, smear vaseline over the inlet rubbers. It'll fill in any
small cracks ( well, until the engine gets hot anyways ). Check the plugs
for rich/weak mixture. Have you dismantled the crank end of the ignition
system?, had the cams out to replace shims and put a cam back one tooth
out?. On to the carbs. Are all the diaphrams OK and did you remantle the
carbs correctly. Each slide should rise under light finger pressure and
fall back as if gently damped.

HTH

 

That's exactly what I told one of my sons some years ago when his Kawasaki
came up with the same symptoms. But a new set of plug leads cured it....

Ron Robinson

 

Hm. This does sound fuel-related. Very like pilto jet problems.

Beats me, I'm afraid.

Just one thing - have you checked that the diaphragms are OK?

 

Sean let forth with a mighty belch and uttered :

Addendum. Have you checked the fuel flow rate at the carb end of the feed
pipe and does it behave the same if the tap is on prime and the filler cap
is open.

Finally, when it gets dark, run it up just on the fuel in the bowls. Any
tracking from the plug leads?.

 

Heh. It's worth trying then, and the plug leads are detachable on the
GT, not sealed into the coils.