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  1. muddslut

    Need help with 85 Sierra running rough

    @Bextreme04 if I ease into it it will rev up until about to where it’s WOT and it starts to cut out. If I gas it really quick at an idle it will cut out then backfire out of the carb and either struggles to catch up with itself or it dies. If I go down the road it runs good for about a block or...
  2. muddslut

    Need help with 85 Sierra running rough

    @Bextreme04 Okay, so I took a a little plastic test and tube tank and wire tied it up to the hood and ran it straight down into the carb. It started and idle good like it was but still the same results as before when trying to rev it up. I hooked the mechanical pump up and had the same results...
  3. muddslut

    Need help with 85 Sierra running rough

    I’m gonna try to get up there in the am and try that! I’ll keep everyone posted. I appreciate all the help so far!
  4. muddslut

    Need help with 85 Sierra running rough

    @Bextreme04 Ill try that first as soon as I get up to Indianapolis to the truck. If I did hook the mechanical pump back up, would I be okay to run some 3/8ths hose from where it’s cut off on the metal line near the alternator up to the carb? I’m not exactly sure what it’s suppose to look like...
  5. muddslut

    Need help with 85 Sierra running rough

    @Bextreme04 The truck also has a new fuel tank, but if they left the old strainer and stuff in there, maybe it could possibly be clogged up enough it can’t pull enough fuel out when put under a load? Or is that hoping for the best? Lol
  6. muddslut

    Need help with 85 Sierra running rough

    @WFO Ive been looking to a Holley but I put this edelbrock on on my buddies camaro with a 355 and it ran perfect, no revving issues, backfires, nothing, granted the car has no trans so we couldn’t really put a load on it, but it revved out a 100x better than on my truck. The truck has what looks...
  7. muddslut

    Need help with 85 Sierra running rough

    @Snoots No go on the mr gasket stuff? The only reason I got it was because I read that edelbrock carbs wanted 4-6 fuel psi ran to them and the edelbrock fuel pump it had on it to start with was only 2-3.5 psi so I went with that mr gasket 4-7 psi. @Shorty81 Thanks mate
  8. muddslut

    Need help with 85 Sierra running rough

    @ali_c20 - thanks for the response! I’ll have to try mounting it inside the frame rail closer to the tank and see what that does. As far as the fuel pressure test, shouldn’t I have gotten a reading? Or could that have been a result of the pump location? Another thing, how would I go about...
  9. muddslut

    Need help with 85 Sierra running rough

    I should’ve also said I tried to do a fuel pressure test. The fuel pump is mounted on the passenger fender well. I spliced the line between the fuel pump and the carb and put the pressure tester there. I fired the truck up and got no reading at an idle or while revving it up there was no change...
  10. muddslut

    Need help with 85 Sierra running rough

    Having some trouble with a truck I came across last week. I’m gonna try to make it short and sweet with what I know so far. So, the trucks a ‘85 Sierra w/ the 350 paired with the 4 speed manual. It has an edelbrock 600 carb manual choke. And a micro electric fuel pump pushing 4-7 psi. (I have...

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