[Vwdiesel] Rebuilt IP / Engine Won't Start

[William Longyard]

Brian,
I timed the pump at 1.15 initially, though I've tried back and forth a bit, 
with no results.

The issue is definitely IP:

I just went down and tried adjusting the fuel screw, again, in and out.  If 
I back it out, the engine won't run at all.  I completely removed the screw, 
took out the washer in front of it, and then screwed it all the way in, 
about 1/8" beyond original setting.  The engine reved much higher, and for 
the first time I could move the throttle without killing the engine. 
HOWEVER, when I moved the throttle the engine slowed down.

What could be wrong inside so that moving the throttle CUTS off fuel supply? 
This seems to be the issue?

Bill L.

I DO APPRECIATE EVERYONE'S HELP ON THIS!!




----- Original Message ----- 
From: <decker at toledotel.com>
To: <vwdiesel at vwfans.com>
Sent: Sunday, September 21, 2008 4:40 PM
Subject: Re: [Vwdiesel] Rebuilt IP / Engine Won't Start


> Question number one about your new injection pump. What did you time it 
> at?
> I haven't read about your pump timing setting which should be somewhere
> between .82 and the high.90's for an N/A. If your pump timing is on then
> there are only three adjustments on the pump. on the top nearest to the
> engine is the idle adjustment screw which should be set to give you an 
> idle
> of 850 to 950 rpm, With the engine not running I guess that would be hard
> but on my Dasher which runs great I show 10 threads in front of the 
> aluminum
> boss across the top of the pump and  the max throttle screw shows 5 
> threads.
> The only other adjustment screw on the pump is the fuel screw by the
> solenoid. This is usualy best left alone but if you turn it a little one 
> way
> you have no power and if you turn it a little the other way you get lots 
> of
> power(fuel) and lots of black smoke. If one fools with that adjustment go
> easy and remember where you came from. An eighth of a turn makes a big
> difference usualy. One wouldn't think so but I found when trying to get a
> turbo setup going that the idle adjustment screw messes big time with fuel
> delivery and I belive if it is very far off the engine might not run.
> Brian Decker
> Western Washington
> ----- Original Message ----- 
> From: "William Longyard" <longyard at ix.netcom.com>
> To: "Shawn Wright" <vwdiesels at gmail.com>; <vwdiesel at vwfans.com>
> Sent: Sunday, September 21, 2008 11:09 AM
> Subject: Re: [Vwdiesel] Rebuilt IP / Engine Won't Start
>
>
>> Thanks Shawn,
>> The timing is spot on.  After a couple of hundred revolutions the pump,
>> crank, and cam still are perfectly aligned.
>>
>> I actually had the engine running well after I installed new pistons, but
>> then the pump leaked.  The hard start/rough idle, NO acceleration issue
> only
>> happened after the new IP pump.
>>
>> Again: I can get it to idle with the idle screw all the way out, but ANY
>> throttle kills the engine.
>>
>> Bill L.
>>
>>
>> ----- Original Message ----- 
>> From: "Shawn Wright" <vwdiesels at gmail.com>
>> To: <vwdiesel at vwfans.com>
>> Sent: Sunday, September 21, 2008 1:44 PM
>> Subject: Re: [Vwdiesel] Rebuilt IP / Engine Won't Start
>>
>>
>> > On 20 Sep 2008 at 23:09, William  Longyard <longyard at ix.netcom.com>
> wrote:
>> >
>> >> I've got a rebuilt IP pump that I just put on my rebuilt engine.  I'm
>> >> having
>> >> trouble starting it.
>> >>
>> >> I used new turbo piston in my 1600NA engine, and I ridge-reamed and
> honed
>> >> before installing them.  Ring gaps are to specs.
>> >>
>> >> My compression from 1-4 is: 380, 385, 380, 375psi.
>> >
>> > Those numbers sound ok for a cold engine with new rings.
>> >
>> >> I believe this compression is low, but know that the rings haven't
> seated
>> >> yet, and those are figures for a stone cold engine.
>> >>
>> >> When I crank over the engine for a long time it ALMOST wants to run,
> and
>> >> a
>> >> couple of times I have been able to get it to run for a few seconds. 
>> >> I
>> >> found
>> >> that by backing the idle screw all the way OUT, it seems to want to 
>> >> run
> a
>> >> little
>> >> bit more.
>> >>
>> >> However, if I step on the throttle it dies immediately.  Is the
> governor
>> >> set
>> >> wrong?  How do I set the governor?
>> >
>> > When it runs, does it sound like the timing is off? Could be you've
>> > skipped a tooth, or the cam
>> > sprocket has slipped. I'd double check timing, and watch for air in the
>> > fuel line. I've only done
>> > one full rebuild with new rings, and it fired up right away... but the
> IP
>> > wasn't rebuilt, and I
>> > primed the fuel system first.
>> > Shawn Wright
>> > http://members.shaw.ca/vwdiesels
>> > '88 Westy 1.6TD 5 speed
>> > '85 Jetta Diesel 1.6NA
>> >
>> > _______________________________________________
>> > Vwdiesel mailing list
>> > Vwdiesel at vwfans.com
>> > http://www.audifans.com/mailman/listinfo/vwdiesel
>>
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