I missed the in "N" part. Of your question so far I tried 2,3,&4 miss fires at 3300-3800 rpm. I'll try it in  neutral later. 

Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont 

> On Aug 30, 2017, at 11:43 AM, OlRivrRat <OlRivrRat@comcast.net> wrote:
> 
>    Possibly You have an "Iffy" Connection in the Eng' Control Circuitry that gets 
> 
> jostled by a Vibration that happens only @ 33-34k RPM ~
> 
>    In Your 1st post You said > 
> 
> "engine started to hiccup only at 3300-3400 rpm in 3rd and 4 th gear"
> 
>    So does this Not happen in 1st, 2nd or N ~
> 
> 
>> On 30 Aug , 2017, at 3:40 AM, Dennis Jowell wrote:
>> 
>> That's what I was  thinking
>> 
>> Dennis Jowell
>> Scotch Hollow Farm
>> Newbury, Vermont 
>> 
>> 
>>>> On Aug 29, 2017, at 11:45 PM, OlRivrRat <OlRivrRat@comcast.net> wrote:
>>>> 
>>>> On 29 Aug , 2017, at 4:37 PM, Dennis Jowell wrote:
>>>> 
>>>> light tan in color
>>> 
>>>  In My experience that means DangNearPerfect ~
>>> 
>>>                  ORR ~ DeanB
>