[Vwdiesel] Rebuilt IP / Engine Won't Start

[William Longyard]

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
>
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