[Vwdiesel] NA injection pump runs rough when

[ken1]

First I want to thank all of the board members that replied to my request. I will double-check every one of the suggestions and report back with the results. I will have a couple of weeks to do that, as my friend is having a melanoma removed from his heel and will not be able to get around for a while. So I will check and verify and hopefully get it solved. Thanks again everyone. ken 
----- Original Message -----
From: ken1 <ktzkarz at embarqmail.com>
To: 'diesel' <vwdiesel at vwfans.com>
Sent: Tue, 16 Feb 2016 20:54:16 -0500 (EST)
Subject: [Vwdiesel] NA injection pump runs rough when

I have a request from a neighbor who has a 1981 1.6L NA diesel caddy. He has a pump that was rebuilt for him about 40k to 50k miles ago. He said his pump has always started, but the idle was rough and low and , he has to give it more pedal to keep it running until it warms up; then the pump and engine runs and responds fine. After the initial cold start, the  engine starts, idles and responds fine. I told him I know nothing about pumps; but perhaps the cold start was not adjusted correctly. What else could cause the cold start problem? Thanks.   

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1982 caddy 1.6L NA running
1967 convertible bug running
1980 caddy project 
1991 2 door Jetta TD restoration in progress
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-- 
1982 caddy 1.6L NA running
1967 convertible bug running
1980 caddy project 
1991 2 door Jetta TD restoration in progress