Posted to Technical Discussion Forum on 6/13/2012
Re: Astro morning no-start?
Thank you for all of your kind help. Tom and several others
were quite correct; the original poppet-style spider legs
have a strong tendency to malfunction below 56 psi, and my
friend admitted that it was below that at least half the
The twist to this story; he found a spec. in AllData that
clearly said 55-62 psi KOEO, and that's just couple of psi
higher than what he was seeing ... what a huge difference a
couple of psi can make!
I found TSB 01-06-04-057, which updates the official GM
No-Start trouble tree with the new values 60-66 psi, but it
hadn't filtered through to the "Tune-Up and Performance
Checks" Section of AllData.
The lesson to be learned ... always check TSBs before pretty
much anything else!!
Thank you all!
Quick Stop Smog & More
Sacramento, California, USA