Where is the idle jet on a 30 Pict carb?
Or even better a .pdf exploded view.
My bus is refusing to idle!🙁
59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
Where is: The Idle Jet on a 30 Pict Carb?
vwguru Commited Dubber
62 posts · joined May 2003 ·
its on the right hand side of the carby near the generater. it is a pain in the butt to get to but a long flat head screwdriver normally does the trick.....
Grey 57 Old Grey Cruiser
2,937 posts · joined Aug 2002 ·
Check that the shut off soleniod is working properly. If the wire has fallen off or broken or the thing is faulty it wont idle.
You should hear it go click clack when you turn the ignition on and off.
You should hear it go click clack when you turn the ignition on and off.
Bizarre Moderator The artist formerly known as blue74l
12,789 posts · joined Aug 2002 ·
I am stealing Aussiebug's thunder (sorry Rob) but have a good read here and see if it helps
http://www.geocities.com/aussiebug1970/30PICT2.html
http://www.geocities.com/aussiebug1970/30PICT2.html
Futue te ipsum!!!
59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
I don't have a cut off valve, must be an early 30 pict. I might strip and clean tonight.
aussiebug Officially Full-On Dubber
246 posts · joined Sep 2002 ·
As far as I know ALL the 30 pict series carbs have an idle cutoff solenoid - in the right side - it screws into the back of the brass idle jet. It' might have been removed by a PO and a plain idle jet from a 34 screwed in there (does the engine tend to "run on" when you switch off on a hot day?)
I think even the 28PICT/1 has it (1964 up) but the earlier 28PICT and 28PCIs don't.
The very last 30 - the 30PICT/3 used in the USA in 1970, moved the solenoid from the right to the left (that's partly why it's a /3 version), and then in 1971 the first 34PICT/3s had them on the left side too.
The modern replacement for the 28s and 30s - the Brosol H30/31, has the cut off solenoid in the left side - same as the larger 34s (that's because it's an almost exact copy of the 1970 30PICT/3 used on US beetles) .
[Edited on 28-5-2003 by aussiebug]
I think even the 28PICT/1 has it (1964 up) but the earlier 28PICT and 28PCIs don't.
The very last 30 - the 30PICT/3 used in the USA in 1970, moved the solenoid from the right to the left (that's partly why it's a /3 version), and then in 1971 the first 34PICT/3s had them on the left side too.
The modern replacement for the 28s and 30s - the Brosol H30/31, has the cut off solenoid in the left side - same as the larger 34s (that's because it's an almost exact copy of the 1970 30PICT/3 used on US beetles) .
[Edited on 28-5-2003 by aussiebug]
Rob
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
silver Dangerous when poked
2,169 posts · joined Dec 2002 ·
Simply put it's the one with the spring!
Keeping it real !
59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
Here's a pic It's a 30 pict 2 with no cut off valve
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59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
Where's that cut off valve got to?
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aussiebug Officially Full-On Dubber
246 posts · joined Sep 2002 ·
You see the fitting with the three screws facing the rear of the car (under the choke canister). That's the vacuum chamber which opens the choke a little if you floor the engine when the choke is closed.
Anyway, just under the lower right screw (in that pic), and slightly "behind" is is a brass nut looking thing (you can only see the lower half of the "nut" in this pic) projecting out of the carb towards the right side.
THAT's the idle jet. On the 30PICT/2s it should have a solenoid screwed into it - sticking out further to the right, and it normally has a wire connection which joins up with the choke wire (visible in the pic attached to the choke canister).
On larger/later carbs (31PICT, 34PICT and H30/31), it's a plain "bolt" with a plugged hole in the middle, since the solenoid has been moved to the left side on these later models.
There's a good chance that the later style idle jet (most of which have the same sized hole in them so they WILL work on the 30 carbs) has been used to replace the solenoid equiped jet.
That would make your engine more liable to run-on after you switch off, especially on a hot day (more likihood of hot spots in the cylinders to keep igniting fuel).
[Edited on 31-5-2003 by aussiebug]
Anyway, just under the lower right screw (in that pic), and slightly "behind" is is a brass nut looking thing (you can only see the lower half of the "nut" in this pic) projecting out of the carb towards the right side.
THAT's the idle jet. On the 30PICT/2s it should have a solenoid screwed into it - sticking out further to the right, and it normally has a wire connection which joins up with the choke wire (visible in the pic attached to the choke canister).
On larger/later carbs (31PICT, 34PICT and H30/31), it's a plain "bolt" with a plugged hole in the middle, since the solenoid has been moved to the left side on these later models.
There's a good chance that the later style idle jet (most of which have the same sized hole in them so they WILL work on the 30 carbs) has been used to replace the solenoid equiped jet.
That would make your engine more liable to run-on after you switch off, especially on a hot day (more likihood of hot spots in the cylinders to keep igniting fuel).
[Edited on 31-5-2003 by aussiebug]
Rob
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
aussiebug Officially Full-On Dubber
246 posts · joined Sep 2002 ·
There's no spring on the idle jet, but there is a spring on the Volume screw in the left side - used to adjust the idle mixture - I think you've confused the two.silver wrote:Simply put it's the one with the spring!
Rob
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
helbus Administrator Mad fabricator, paint and body
7,386 posts · joined Sep 2002 ·
Our 1970 1300 has a PICT 30 like in the picture, and it has the cut out solenoid.
Just today I took it off as the motor wouldn't idle.
I simply took the top off, took the float out, swished the carby in tub of thinners, blew it dry with compressed air, reassembeld, refitted and it runs like a dream again.
Such a simple little unit. I love it.
Just today I took it off as the motor wouldn't idle.
I simply took the top off, took the float out, swished the carby in tub of thinners, blew it dry with compressed air, reassembeld, refitted and it runs like a dream again.
Such a simple little unit. I love it.