Urgent help (I know title sucks but its really urgent)

velja
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Joined: Sat Dec 10, 2011 7:49 pm
What Bike or Bikes Do You Own?: XTZ 660 1993.
Previously Owned Bikes: Honda CB 500 1998, Sachs X-ROAD,
Location: Serbia

Re: Urgent help (I know title sucks but its really urgent)

Post by velja »

Like 99.5 problem resolved with pilot screw. I don't know what it had with choking in mid range but it resolved it.

I was screwing it out 1/4 turn and trying / driving. It is 4.75 turns out now. No firing from exhaust, no tjuf, tjuf sound, no mid range crisis.

Only thing left is that it hesitates a little on first millimeter of throttle. It is not noticeable in ride.

I will have to review things little more.

My friends just got back from Romania. Only thing that kept me home was few screw turns :|
xtzrick
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Posts: 1051
Joined: Sun Apr 17, 2011 3:41 pm
What Bike or Bikes Do You Own?: '97 Yamaha XTZ660 Tenere, '79 Suzuki GS750
Previously Owned Bikes: Yamaha RS125, Suzuki GT125, Suzuki GT185, Honda CB250 G5,Kawasaki Z1000J, Kawasaki KL250, Yamaha TZR125, Yamaha XT600E
Location: Socialist Republic of S.Yorks.

Re: Urgent help (I know title sucks but its really urgent)

Post by xtzrick »

velja wrote:Like 99.5 problem resolved with pilot screw. I don't know what it had with choking in mid range but it resolved it.

I was screwing it out 1/4 turn and trying / driving. It is 4.75 turns out now. No firing from exhaust, no tjuf, tjuf sound, no mid range crisis.

Only thing left is that it hesitates a little on first millimeter of throttle. It is not noticeable in ride.

I will have to review things little more.

My friends just got back from Romania. Only thing that kept me home was few screw turns :|
You need a bigger pilot jet Velja (Have you already put a bigger 1 in :scratch: )

Anyway it needs to be bigger, 4.75 turns out is too many & you risk the screw dropping put.

Image

The above photo shows why the pilot fuel circuit affects mid range, as the throttle slide rises the fuel diverts to the hole above the jet & is not governed by the mixture screw.

Get a bigger jet & re-adjust the mixture screw :thumb:

Rick
xtzrick
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King of Posting
Posts: 1051
Joined: Sun Apr 17, 2011 3:41 pm
What Bike or Bikes Do You Own?: '97 Yamaha XTZ660 Tenere, '79 Suzuki GS750
Previously Owned Bikes: Yamaha RS125, Suzuki GT125, Suzuki GT185, Honda CB250 G5,Kawasaki Z1000J, Kawasaki KL250, Yamaha TZR125, Yamaha XT600E
Location: Socialist Republic of S.Yorks.

Re: Urgent help (I know title sucks but its really urgent)

Post by xtzrick »

I've changed my mind

Free options 1st smile:

Lift the left hand carb needle 1 groove, re-adjust your miture screw & see what effect that has.

Rick
velja
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Posts: 42
Joined: Sat Dec 10, 2011 7:49 pm
What Bike or Bikes Do You Own?: XTZ 660 1993.
Previously Owned Bikes: Honda CB 500 1998, Sachs X-ROAD,
Location: Serbia

Re: Urgent help (I know title sucks but its really urgent)

Post by velja »

I am driving it with this setup until winter comes. It is acceptable. I will surely try your suggestion.

I am too much enjoying my daily rides to pull it apart again. :)
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