Motorbike Forums


Reply
Thread Tools Display Modes

Kawasaki GT750 Air screws

 
 
Ovenpaa
Guest
Posts: n/a
 
      05-29-2004, 05:20 PM
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


 
Reply With Quote
 
 
 
 
Lozzo
Guest
Posts: n/a
 
      05-29-2004, 07:02 PM
Ovenpaa says...
> 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)


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.

--
Lozzo:
If it ain't broke, Timo ain't seen it.
 
Reply With Quote
 
Ovenpaa
Guest
Posts: n/a
 
      05-29-2004, 07:12 PM
> 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.
>


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


 
Reply With Quote
 
Lozzo
Guest
Posts: n/a
 
      05-29-2004, 07:19 PM
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.
> >

>
> 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,


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


--
Lozzo:
If it ain't broke, Timo ain't seen it.
 
Reply With Quote
 
Lozzo
Guest
Posts: n/a
 
      05-29-2004, 07:55 PM
Ovenpaa says...
>
> > Sounds like the main jets and/or emulsion tubes could do with a serious
> > clean out.
> >

>
> They spent a couple of hours in bits in an ultrasonic cleaner in a 50/50 mix
> of petrol and thinners earlier this week, they are as clean as it gets now.


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.


--
Lozzo:
If it ain't broke, Timo ain't seen it.
 
Reply With Quote
 
Statto
Guest
Posts: n/a
 
      05-29-2004, 08:19 PM
On Sat, 29 May 2004 18:20:47 +0100, "Ovenpaa"
<tagmignu*FOS*@tiscali.co.uk> wrote:

>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)
>


According to the Haynes BoL, 2 screws is correct.

--
Statto
ZRX1200S GT750 VFR750
 
Reply With Quote
 
The Older Gentleman
Guest
Posts: n/a
 
      05-29-2004, 11:16 PM
Ovenpaa <tagmignu*FOS*@tiscali.co.uk> wrote:

> > 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.
> >

>
> 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.
>

Sounds like duff coils to me.....



--
Trophy 1200 750SS CB400F CD200 Z200 x2 ST70 DT50MX YTC#3
GAGARPHOF#30 GHPOTHUF#1 IHABWTJ#1 BOTAFOT#60 ANORAK#06
BOF#30 WUSS#5 http://www.chateau.murray.dsl.pipex.com/
 
Reply With Quote
 
R.N. Robinson
Guest
Posts: n/a
 
      05-30-2004, 05:20 PM

"The Older Gentleman" <(E-Mail Removed)> wrote in
message news:1gekohr.1qy0m0fjsab1aN%chateauSPAMKILL.murray @dsl.pipex.com...
> Ovenpaa <tagmignu*FOS*@tiscali.co.uk> wrote:
>
> > > 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.
> > >

> >
> > 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.
> >

> Sounds like duff coils to me.....
>
>
>

Or plug leads?

Ron Robinson


 
Reply With Quote
 
The Older Gentleman
Guest
Posts: n/a
 
      05-31-2004, 10:44 AM
R.N. Robinson <(E-Mail Removed)> wrote:

> "The Older Gentleman" <(E-Mail Removed)> wrote in
> message news:1gekohr.1qy0m0fjsab1aN%chateauSPAMKILL.murray @dsl.pipex.com...
> > Ovenpaa <tagmignu*FOS*@tiscali.co.uk> wrote:
> >
> > > > 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.
> > > >
> > >
> > > 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.
> > >

> > Sounds like duff coils to me.....
> >
> >
> >

> Or plug leads?
>

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.


--
Trophy 1200 750SS CB400F CD200 Z200 x2 ST70 DT50MX YTC#3
GAGARPHOF#30 GHPOTHUF#1 IHABWTJ#1 BOTAFOT#60 ANORAK#06
BOF#30 WUSS#5 http://www.chateau.murray.dsl.pipex.com/
 
Reply With Quote
 
Sean
Guest
Posts: n/a
 
      05-31-2004, 03:41 PM
Ovenpaa let forth with a mighty belch and uttered :

>
>> > > Sounds like duff coils to me.....
>> > >
>> > >
>> > >
>> > Or plug leads?
>> >

>> 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.
>>

> I checked the carb breather routing, stripped the fuel tap and swapped the
> coils over today and no difference, however if it was the coil then I
> guess I would not see a change. Interestingly No2 seems fine, but then so
> did the other 3, they all got hand hot in about the same time.
>
> I have noticed that it starts without choke, and fluffs then stalls when
> you pull the choke out at low revs, and still refuses to rev much past 6k
> but if you get above 6k then pull the choke out it revs (albeit badly)
> through to 10k, however this is off load, when ridden it is a lot worse.
>
> This has to be carbs,everything else seems spot on, unless a dodgy ignitor
> can lead to such a strange scenario.


It can but save your pennies for now.


>
> I guess the next plan of attack is replace the coils, then if that fails
> strip the carbs and check one last time.
>


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.


> I have never been beaten by a bike like this before.
>
> Final stage is down to the shop I fear..................
>
> /d


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


--

GTR1000, the big black bugger. GSX600f, the small black bugger. GSX400ez,
the SOB. XJ650, the 'project'

 
Reply With Quote
 
 
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
GT750 Front End Tud Motorbike Technical Discussion 15 08-01-2008 01:49 PM
Screws Andras Nolsøe Motorbike Technical Discussion 5 01-03-2006 04:31 PM
US source for 6BA screws? Ctenos Motorbike Technical Discussion 2 08-30-2003 12:02 AM
Gt750 Chrome points cover Erasmus Dim Quebec Classic Motorbikes 2 07-29-2003 07:51 PM


All times are GMT. The time now is 11:25 AM.

1 2 3 4 5 6 7 8 9