tape

new to this.my 94 is running rough had intake gasket changed . My mechanic told me the fuel pressure regulator was leaking , worked worst started flooding . So changed regulator still doing the same thing. Need advice

s10blazerman4x4

have you done a search for cpi nut kit etc

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1991 Chevy S-10 Blazer 5.7 V8 RIP
1999 Chevy Blazer 2dr 4.3--> If GM engineered something to fail on this beast it has or will. Repairs include w/in first 30 days of owning it: P1870, left front wheel bearing, gas cap, rad cap, idler tensioner, seat handles, and the list goes on.

http://www.automotiveforums.com/vbul...d.php?t=890449

Chime in ^ with any suggestions.

tape

no took intake back off looked like one injector was wetter than others

blazer94

This is a known issue with the CPI unit and nut kit leaking into the plenum. If you search this fourm you will find a lot of threads on this issue.
This link http://forums.s-series.org/viewtopic.php?t=2278
is a very detailed explanation what to look for
this link http://s-series.org/Sections-article27-p1.html
is a detailed explanation of how to change the injector assembly and nut kit. It is not hard, just be patient, you'll feel great after saving a ton of money.

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Trailblazer 2005.
2WD LS
Brand new, No Mods Yet!