04 Blazer fuel pressure confusion
If there is anything wrong with the old one (regulator, poppet leaking, etc) I would not spend any money repairing the old one. That said, the upgrade spider can be pretty pricey. You will notice no difference in performance if your old spider is working properly. If you decide to go with a new MPFI spider, we typically recommend the AC Delco one. If the fuel pump check valve is not the cause of your pressure decay (as shown by testing with fuel pump sticky), you might want to consider just throwing on a new spider since the cause would then have to lie somewhere in that assembly.
Last edited by LesMyer; May 12, 2017 at 10:27 AM.
If there is anything wrong with the old one (regulator, poppet leaking, etc) I would not spend any money repairing the old one. That said, the upgrade spider can be pretty pricey. You will notice no difference in performance if your old spider is working properly. If you decide to go with a new MPFI spider, we typically recommend the AC Delco one. If the fuel pump check valve is not the cause of your pressure decay (as shown by testing with fuel pump sticky), you might want to consider just throwing on a new spider since the cause would then have to lie somewhere in that assembly.
As far as replacing the spider, can't I remove the intake and reconnect just the fuel lines amd turn the key to accessory. Wouldn't that show a leak anywhere in the spider asnd regulator assembly?
p.s I'm out of town for my son's wedding this weekend - leaving tomorrow morning.
Last edited by LesMyer; May 12, 2017 at 08:05 PM.
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