Thanks for you're comments and advices Denis....

I have been there before and will go there again....

Regards, Ben

Dennis Haynes wrote:

>Valve adjustment is fine. The whole idea of hydraulic lifters is to take
>out critical adjustment. If lifters keep clacking, you have a valve
>sticking in the guide or a bad lifter or they are not getting oil flow.
>As for the temp 2 sensor, they rarely go bad but the connection at the
>plug, the ground connections, including the one in the FI harness is
>frequently an issue. As for the NGK O2 sensor, I find they are often
>weak or slow to respond and the Vanagon does not like it. Even Bosch, I
>find 1 or 2 out of 4 are no good. Also, the NGK is the wrong diameter to
>accept the clip on deflector shield. The shield keeps air from cooling
>the sensor off and road spray from fouling it.
>
>Dennis
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