[T3] Mysterious squareback condition.... need suggestions.

James Lingenfelter jimmyandcher at yahoo.com
Wed Jan 26 22:08:22 PST 2011


Correct.... no chokes. Tell me what you guys think of this: I  
mentioned this problem today to a guy who works on aircooled vw's,  
and he asked about the coil on the car. I told him that it was a  
scummy looking very old black coil. He cursed black coils and said  
that was likely the source of the problem, and instructed me to get a  
Bosch blue coil right away. Does this sound like good advice?

On Jan 26, 2011, at 6:25 AM, Jim Adney wrote:

> On 26 Jan 2011 at 13:42, Dave Hall wrote:
>
>> Check both carbs have the choke heater wires connected firmly -  
>> they can
>> fray with engine vibrations over time - and operate correctly.  If  
>> one is
>> fully closed and the other opening properly, you will get very uneven
>> running.  (Assumes you still have the autochokes functioning, not  
>> disabled
>> and set permanently open).
>>
>> Another twin carb problem is if one of the balance pipe  
>> connections is loose
>> and causing an air leak.  That will cause a similar fault.
>
> He's got Weber 34ICTs. Probably no chokes or balance pipes.
>
> -- 
> Jim Adney
> jadney at vwtype3.org
> Madison, WI USA
>
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