A question for you CIS(or and FI) gurus out there. Replaced the injector and it did not help

[doubt at inwave.com (Nate Mellom)]

John,
What results did you get when you did your DPR check?
I had the same stumbling problems you have, finally cured mine this 
spring.  I'll let you know what I did when I have time to write a short 
novel.
:)

Nate


John C. Worden wrote:
> Ok, I replaced the #4 injector and there is no difference.  Afterwards I 
> also rechecked the DPR,
> replaced the dist. cap and rotor and rechecked/adjusted the timing.  The 
> thing still isn't right.
> To answer some of the responses:
> Michael- I didn't know it was a fuel problem, but ignition/spark is 
> right on, so that was my next
> area to look at(I should have included part of my email from a day or 
> two ago that told of the
> problem and what I had checked)
> Tberk-I have looked for vacuum leaks and have not found any.  Doesn't 
> mean I haven't missed one,
> but I have looked thoroughly.
> And for everyone that mentioned the airflow plate, it's bearings and the 
> dist.  I can pretty much rule
> that out because the plate responds very smoothly, and fuel increases as 
> the plate is lifted.
> Well I will take another look at the ignition section of Bentley 
> tomorrow, it's possible I've missed something.
> 
> John
> 
> At 09:13 PM 5/20/07, John C. Worden wrote:
>> I am trying to diagnose my 16V's acceleration problem that I can best 
>> describe as a stutter.
>> I have been through the Bentley's troubleshooting list and am down to 
>> the injectors, fuel distributor,
>> main pump and airflow plate.
>> The plate looks good and moves smoothly.
>> I pulled the injectors out and aimed them into four clear beer 
>> bottles, each bottle weighed the same.
>> I ran the pump and lifted the plate for full throttle for thirty 
>> seconds and then weighed the fuel.
>> Cylinders #1 through #3 put out 1.5oz of fuel with a nice pattern.  #4 
>> put out about 1.7oz with a
>> half conical pattern.  Would the pattern not being a nice cone shape 
>> and it putting out the extra
>> fuel cause this?  I know it's not right, and am replacing the injector 
>> after work, but is that off enough
>> to cause a running problem?
>> Any thoughts?
>>
>>
>>
>> John C. Worden
>> Bucksport, Maine
>>
>> ''98 Dakota 4x4-
>> '88 Scirocco 16V-
>> '86 Scirocco 8V-Now a 16V!
>> '78 Scirocco Brazil Brown Metallic, 4 speed.- In the Rotisserie and 
>> under restoration
>> '89 Polaris Indy Deluxe
>>
>>
>>
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