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Re: 95 Astro No Start
with a new fuel pump - that generates SOME- but not enough pressure- I assume you have a leak- since you had little or no fuel pressure before- and very little now- I would say you missed in your original diagnosis- and you need to check for a leak under the intake plenum- both pumps are trying to feed the spider assembly- but it can't work until it sees 60+ psi pressure- which it never sees because of a severe leak- most likely under the plenum at the plastic feeder pipes- last one I did- I removed the upper plenum- and saw the fuel puddles- and then turn the key on to energize the fuel pump for 2 seconds-- and it squirted fuel in my face!! so be careful.
If you had a severe restriction in your fuel lines- there would be pressure- but not much flow-- so the engine would start and run bad when accelerating- so I go with the leak scenario...have fun.......the pipes are sold separately- the spider assembly is the big bucks.....
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Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
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