I am getting alot of backfire and ruff starts. I have tried adjusting screws on carb but not having specs, for carb(edlebrock) I can't tell if it is set right. When I am stopped at a light it surges forward, I have to really press on the brake or put it in neutral to hold it. Could that be from the mixture being to rich? I also think I have a bad pump on the carb notice gas leaking when parked backwards on a incline. Im looking to possible change out the edlebrock with a holley would this be a good swap? any suggestions will be appeciated.
Sounds like you got junk in your fuel eldlebrocks hate little pieces of stuff in the fuel like rust very common on our cars. And VERY VERY rarely is a backfire cause by a good carb even if the idle settings are way out to lunch. Either way heres how to ajust them very simple on edlebrocks simply there are two screws in the frount when your car is running turn the them in untill the car starts to stumble then back them out half to a full turn do one at a time both sides. thats not the only way but is the easy'st PS get a holley and toss that edlebrock in the trash just my 2 cents about edlebrocks/carters
I just had a too-doo with an Edelbrock 1406 on my Mopar. The car ran like crap and idled like a worn out clothes dryer on spin cycle. I tried everything and nothing helped. Sounds like it either needs rebuilt or scrapped. I replaced it with a Holley 600 cfm. The car runs like night and day now. If you do the Holley swap, the bolt pattern is different and you'll need an adapter plate. Also, if you have a similar model Edelbrock, many of the Holley carbs are vacuum secondary while the Edelbrock is mechanical. You'll have to run some new vacuum lines. The instructions that come with the Holley are very well printed and tell you exactly what lines go to where, a no brainer.
carb swap Thanks for the info. I will most likely do the swap which brings up another question. Will the holley carb be o.k. with an edlebrock 289 performer or rpm air gap intake manifold?The 289 is what I have on now.
YES you put a holley on anything it will be better "well within reason" just dont over carb your motor holleys are monsters on gas if you run something on a mild 302 a 650 doublepumper should be good. Holley are a little harder to tune because you have to ajust the float a good investment is the fuel bowls with little clear sight in them so you dont have gas pouring out when you ajust them. I remeber the day i had an edlebrock i tune it to the best it could be i thought it ran good untill the day my friend swore to me my car would run 10X better with his holley we slap it on did NO tuning and i swear it felt like i doubled my torque. The next day i went a bought a holley and well the edlebrock went to the swap meet. Ps the holley should be a direct bolt mine bolted right onto a edlebrock intake.
