Problem solved!! Spark plugs were causing my bucking problem at 3200-3400 rpm. I changed the plugs and install new ones from Bus Depot - Bosch Super Plus spark plugs # 7998 WR7/CC+. (Thanks Ron) No more bucking or hiccuping. Plugs I took out had only 22k on them. What a journey. Thanks for all the suggestions which lead me to get at the plugs.

Dennis J

At a complete loss now what to do for the  hiccup engine problem.
I did notice today that when I went to start the engine for a test that the starter barely turned over. This the first time this happened Tried 3 times any finally got the usual power to it and it started as usual. New ignition switch, a replacement GOWESTY starter with about 5 k on both. 

Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont 

> On Sep 4, 2017, at 2:27 PM, OlRivrRat <OlRivrRat@COMCAST.NET> wrote:
> 
>       Pretty Much Sole Purpose of Dielectric Grease is to Keep Moisture Out ~
> 
>                                                       ORR ~ DeanB
> 
>> On 4 Sep , 2017, at 11:59 AM, Neil N wrote:
>> 
>> I also have to wonder that if too much grease was applied, would it
>> help harbour moisture? This might depend heavily on the location and
>> design of connectors, but if water got in, the grease might prevent it
>> from evaporating off in a timely manner which might hasten contact
>> corrosion? BTDT. (pretty sure anyways)
>> 
>> Neil.
>> 
>>> On 8/30/17, Dennis Haynes <d23haynes57@hotmail.com> wrote:
>>> 
>>> While dielectric grease sounds like a good idea and it is good to slow down
>>> and prevent corrosion it can often cause more grief than good. One of the
>>> problems with the connectors on some of the fuel injection sensors is that
>>> the actual connectors do not have sufficient spring pressure wipe off any
>>> debris or corrosion and maintain a good electrical connection during
>>> temperature changes and vibrating conditions. Adding grease under the
>>> contacts can just add another insulating factor and with the low voltage
>>> that these sensors operate at can make things a lot worse. If a bad
>>> connection is thought than the fix is to repair the harnesses with new crimp
>>> terminals for the female contacts.
>>> 
>>> Dennis
>> 
>> 
>> --
>> Neil n
>> 
>> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>> 
>> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>> 
>> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>
>> 
>> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>