59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
Any common causes for a carb to not want to idle? It's a 30 pict.
No idle?
Bizarre Moderator The artist formerly known as blue74l
12,789 posts · joined Aug 2002 ·
Ooops - posted this on the other question
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
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
Futue te ipsum!!!
aussiebug Officially Full-On Dubber
246 posts · joined Sep 2002 ·
Don't feel sorry for "stealing my thunder" Blue - I'm happy to have my articles posted if it helps another VW owner.
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
59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
Well i've just spent the afternoon rebuilding my carby. And it still wont idle!
I have pressure tested the manifold, set the timing (static 0°) and set the idle to high. It seems to have a slight miss every now and then, above 2000 rpm.
As soon as you take your foot off the gas, it dies like turning the key off.
Any ideas?
I have pressure tested the manifold, set the timing (static 0°) and set the idle to high. It seems to have a slight miss every now and then, above 2000 rpm.
As soon as you take your foot off the gas, it dies like turning the key off.
Any ideas?
Bizarre Moderator The artist formerly known as blue74l
12,789 posts · joined Aug 2002 ·
sorry - why 0 degrees (how did you do the degrees symbol?)
what motor is it ? a 1641 yes?
and a 009?
why not 7.5 ?
What about spark?
leads?
cap and rotor?
Has this only happened since you took the duals off?
did this carb ever work?
what motor is it ? a 1641 yes?
and a 009?
why not 7.5 ?
What about spark?
leads?
cap and rotor?
Has this only happened since you took the duals off?
did this carb ever work?
Futue te ipsum!!!
59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
I normally set it to 0° as a starting point and tweek from there, also I know that it runs at that setting.
I get a good spark, from what I can see through the clear dizzy cap, and runs well and smooth at high revs, apart from a very slight miss which I can hear every now and then.
This carb is what was on before I tried the duel carb set up and worked fine.
To get the ° symbol hold down the Alt key any enter 0176 on your keypad, this method gives you access to the extended ASCII keyset, just try it with different numbers. ±²³´µ¶·¸:thumb
I get a good spark, from what I can see through the clear dizzy cap, and runs well and smooth at high revs, apart from a very slight miss which I can hear every now and then.
This carb is what was on before I tried the duel carb set up and worked fine.
To get the ° symbol hold down the Alt key any enter 0176 on your keypad, this method gives you access to the extended ASCII keyset, just try it with different numbers. ±²³´µ¶·¸:thumb
70AutoStik Insano Dub Head
730 posts · joined Aug 2002 ·
Athough you've rebuilt your carb, it's possible a passage is still blocked. The best way to check this if you have the gear is to visit your local wrecker and pick up an EGO sensor, then tap your exhaust and fit it. I'm not sure if Dick Smith still sell them, but Jaycar and Altronics still have a kit to read the mixture reading from this; if not, many auto stores now sell a ready-made unit to do it.
Another thing to consider is your clear dizzy cap - they are notorious for leakage. Just fit an old stock one to prove this isn't the fault. A leaky dizzy cap usually causes problems at low to mid revs, but it can be anywhere really.
Another thing to consider is your clear dizzy cap - they are notorious for leakage. Just fit an old stock one to prove this isn't the fault. A leaky dizzy cap usually causes problems at low to mid revs, but it can be anywhere really.
fish Wolfsburg Wizard
584 posts · joined Apr 2003 ·
aha!! so after abusing the carby all this time i find i have a crack in my dizzy cap. Bugger bugger bugger:bounce:bounce
Drink and drive your a bloody idiot!!! make it home you'r a legend !!!!
aussiebug Officially Full-On Dubber
246 posts · joined Sep 2002 ·
It doesn't even need to be cracked - the clear caps seem to have a problem with cross firing - maybe the plastic they use?
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
70AutoStik Insano Dub Head
730 posts · joined Aug 2002 ·
Yes, it's the plastic they use, it forms invisible carbon tracks rather quickly. The good-old bakelite caps from Bosch may not look as pretty, but they work a lot better, a lot longer.
59 BUS Seriously Crusin Dubber
170 posts · joined Mar 2003 ·
I tried another Carb, that didn't work at all. so I rebuilt my 30 pict (fully). Set the timing (+30° max at 3500rpm) yes a 009.
Set idle at 850rpm, idle air screw at 2.25 turns out. cleaned clear 009 Cap. Now I have an idle BUT every now and then it will almost stall then idle up again? Maybe I'll change the condenser?
Set idle at 850rpm, idle air screw at 2.25 turns out. cleaned clear 009 Cap. Now I have an idle BUT every now and then it will almost stall then idle up again? Maybe I'll change the condenser?
70AutoStik Insano Dub Head
730 posts · joined Aug 2002 ·
First, borrow a stock Dizzy cap - cleaning won't fix it. The condensor usually won't allow the engine to start (or produces misfiring at higher revs first,) but it's worth looking at down the track.