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I have a 85 blazer with a 350 it has a edelbrock performer carb .it starts up just fine and idles fine but when i give it throttle it starts to missor it feels like its choking out

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Have you checked the timing? and is it over jetted you may need to reduce the size of the main jets it can be flooding out, you have to make sure the secondary ignition system (plugs wires cap and rotor ) and all good I always recomment Factory AC Delco stuff they have Igh Performance Stuff Too.
if you find this information helpful please give me a good rating and please contact me if you need further help

Posted on Aug 10, 2008


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Idle rpm adjustment set correctly, when put it in drive car dies. when I adjust so car wont die in gear, as soon as I put it in park the idle goes real high. whats wrong?

There is throttle plate adjustment and idle air mixture adjustment x2 so 3 items to adjust.If the carb is clean and you have NO vacuum leaks the engine should run fine.One trick for a better idle is to run full vacuum at idle speed on the dist vac advance if you have a vac advance rather than a ported vacuum which applies vac only at open throttle.

Apr 14, 2018 | Cars & Trucks

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Hi I just want to how much easier is it to tune an edelbrock carb then a quadrajet carb

Edelbrock cars are square bore and Quadrajets are spreadbore make sure you have either an adaptor plate if running stock manifold or you'll have vacuum leaks, as far as tuning Edelbrocks are EZ. 2 air/fuels screws that only effect idle, turn in till runs rough then back out 1/4 to 1/2 turn on both, that will set it for economy, for performance engines, turn out or counter clockwise till runs rough then turn back in clockwise 1/2 to full turn, set idle ***** and your good to go, the two vacuum ports in front are distributor advance, the right side closest to manifold is full time vacuum hook there for performance or left side for economy.. if you buy a new edelbrock carb it will run great right out of the box, also has a set/up DVD, for novice Mechanics, ez to change metering rods too, hope this helps, and in my opinion Quadrapuke carbs are junk.

Apr 09, 2016 | Cars & Trucks

1 Answer

I,have a 85 f250 7.5l. Put a edelbrock carb on it. I can get it to start and idle but when I give it gas it dies. What can I do to make it drivable again?

1st thing to check is the fuel pressure , most carbs have to have a constant 12 psi supply in order to work , they'll idle on lower but will starve out when more throttle is added (pumps and filters)

second thing what model carb did u use ? reason I ask is some models require two fuel inlet connections , the former carb might have only had one that would lead u to believe new one only needs one as well , this may not be true

last but not least : out of the box carbs are set to basic settings as far as jetting goes , some fine tuning is expected to do by installer for perfect calibration of A/F ratio in all throttle settings

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Tring to determine the best recommended carb for my 85 chevy silverado as in gas milage and power

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How do i tune a edelbrock 650 carb on a 350

have a shop check the tension on the choke settings in the morning before car is started,and reset fast idle on choke settings,then when car is run and heated up it will trip off the choke settings and fast idle and return back to normal settings

Nov 22, 2009 | Chevrolet Nova Cars & Trucks

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Im going to buy a '77 chevy silverado. i dnt no much bout cars let alone one older than me. i no it has a 350 edelbrock engine n carb. n a new auto-trans. less than 500 miles on each. well the guy said it...

The cable he is talking about is a Throttle Valve or Kick down cable. What it does is it increases pressure to the clutches on hard acceleration and tells the trans when to downshift.

It could be that your idle is set too low, try giving it a little gas and easing it into gear. If it still kills then you will need to start looking at possible engine / Trans problems.

I assume it's a TH350 trans?

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try a smaller more factory carb.and see if it helps

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Choke Light rough idle

adjust your carb, the 2 screws on each side of the carb adjust so you can get the car to idle correctly, also check your distributor

May 26, 2009 | 1985 Chevrolet Chevy

1 Answer

Engine bogs down

I would adjust the carb, then I would check the float and the needle and seat on your carb. make sure your air filter is clean. check the timing.

Mar 05, 2009 | 1985 Chevrolet Chevy

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