'91 100q 5 injectors replaced - now car wont start

[Steve B]

I have heard tell that there is a way for the hydraulic lifters to get pumped up in a way that the valves never close ... 

Steve Buchholz

... and I second the comment that if a mechanic tells you they need to pull the head to figure this one out that you should shop for a new mechanic!



Huw Powell <audi at humanspeakers.com> wrote:

>> The mechanic told me that the engine is definitely shot but is
>> unable to diagnose it unless he takes the head off.
>
>Whoever mentioned that the "mechanic" should find a new line of work was
>on the right track.
>
>> I'm betting that the key sheared and the pulley no longer reads zero
>>  with #1 at TDC.
>
>Or the pulley shifted on the harmonic damper, either way, this is so
>easy to check.
>
>> If that's the case, there is a slim chance that  the valves escaped
>> damage
>
>Not really a problem.  This is not an interference engine.
>
>The only way to lose compression on all cylinders from one "event" is 
>for the valve timing to be off (ignoring the washdown theory, which has 
>been tested in this case).
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