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

-----Original Message-----
From: Benoit [mailto:huotb@videotron.ca]
Sent: Monday, April 25, 2005 9:44 PM
To: Dennis Haynes
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: Tooooooooooooo ritch a startup...com on guys!!!!!

Well..... New heads are at 1 3/4 turn IN wile those lifter calm down and

the new valves seat well...now back to 1 turn...but they are NEW
heads...
Temp2 is new like everything else....but a bad ground wire or a bad
Temp2 sender connection is possible...even a faulty temp2 sender is a
possible cause.

About the fuel smoke, at start up ONLY, gone after 2 minutes...that is
one problem, the second problem is some stange behavior at normal speed,

like lost of power, surge...bucking....but when the O2 is unplug,
everything is back to normal!!!!

The O2 is nor OEM and his a cheaper one.... i think it's made by NGK....

I agree, the O2 is not responsible for the fuel surge at start up...but
it's a Vanagon, you never know.

I will have the van back tomorrow and...find the problem...like i always

do, i will keep you up to date.
It is quite normal to to have a few glitch when you put engine in pieces

like i do.

Thanks for you're comments, i do appreciate....
Regards, Ben
http://www.benplace.com/vanagon_engine6.htm

Dennis Haynes wrote:

>Temp 2 sensor, ignition or valve problem? O2 sensor does not affect
>start up. Now are you talking during warm up or shortly after? A ground
>problem can cause a run away rich condition. So will a bad )2 sensor.
>The ground problem is suspected if disconnecting the O2 sensor does not
>help. Remember, after disconnect to re-start the engine to reset the
ECU
>to base line.
>
>
>Dennis
>
>