[Vwdiesel] Rebuilt IP / Engine Won't Start

[Shawn Wright]

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