[urq] Starting and running after hot start

[urq]

Agree.  There is so much information to be gained by reading the fuel system
pressures ... 

One other thing to check on a MAC-02 is functionality of the OXS Freq Valve
.... I found my car's Jekyll/Hyde nature was due to an intermittent drive
signal to the OXS Freq Valve ... the valve buzzing should be easily heard
when it is running.  From my BTDT it seems that the function or lack of
function is far more critical in warm start conditions.  

Steve Buchholz

-----Original Message-----

Not to nit-pick - but I would consider that a "warm" start problem.  Back
when I had CIS (6 yrs!!) - my car had a warm start problem. It would start
right up no problem after sitting for a few minutes (hot start) but give it
a half hour and it would start hard, idle rough.

My memory is fuzzy but here are my thoughts:  

Check your fuel pressures - might need to rebuild the plunger/o-ring set in
the fuel distributor.
Fuel check valve (can't remember if this is in the accumulator or pump)
Fuel accumulator
Leaky injectors?
Injector fan working? - does it have the hole cut out to send air to the
fuel lines?

Don't forget to pressure test for vacuum/boost leaks.  #1 cause of problems
IMO. 

Brandon
'84 ur

-----Original Message-----

Hi everyone.  

My 83 URQ has developed a "hot startint" problem lately.  Cold starts are
fine.  However, when I get to my destination, park the car for an hour or
two, come out start it, it starts, but it will not run (idle).  I can keep
it going (heal and toe type thing). But the other day I stalled at an
intersection, so I had to wait for about 15 to 20 minutes before it would
star again.  I managed to get it home, but before I turned off, I checked to
see if it would idle.  It did as it normally does.  I thinking perhaps a
couple of leaking injectors??  Would appreciate any input from anyone. 
Thanks in advance.

Tony:  88 Audi Q 90, 1983 URQ, 2008 A3 S-line.