[T3] Intermittently running on two cylinders

[Jim Adney]

On 1 Dec 2012 at 14:54, Daniel Nohejl wrote:

> My wife and I are currently battling this very issue on our '69 SB
> with stock FI. We're not running Pertronix though. 

On '68-9 FI only, the injector grounds connect to a screw into the 
head. The connection between the head and the screw tends to become 
intermittent after the head has heat cycled a few times, so injector 
grounding problems are common on 68-9 cars.

The solution I've come up with is to put a special Belleville 
(dished) washer under the head of the ground screw. This allows for 
the thermal expansion/contraction that happens each time the engine 
is run. There are other solutions, but none quite so easy or so 
inconspicuous.

On later cars the injector grounds come to the center of the case. 
The case doesn't get nearly as hot as the heads, so this problem does 
no occur in the later years.

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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