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Re: [T3] T3 engine problems

On 2 Dec 2002 at 16:07, The Shackelford Family wrote:

> I have a '72 T3 automatic fuel injected squareback.  Starting about a month
> ago the vehicle starting dieing whenever I stopped and let the engine idle.
> The problem then progressed to dieing while I was still moving.  Now the
> vehicle will not start.
> A couple of knowns are that if I change out the spark plugs I can get the
> car to start, but that fix is lasting shorter and shorter distances.  I
> would like to solve this problem.  The engine is in good condition and this
> problem has me totally perplexed.  Is it the fuel pressure regulator, the
> fuel injectors, ...?  Any responses would be greatly appreciated.

What do the spark plugs look like when you take them out? If they are dark and 
sooty, then the FI is running rich. The most likely cause of this is the 
voltage regulator running low. If the system voltage is low the FI will run 

Measure the system voltage with the engine warmed up and at medium RPM. Measure 
it at the battery after a drive to warm it up. It should be 14.1-14.4V. If it 
is less than 13.5V replace the VR with a genuine Bosch. The part # is 30-019.

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

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