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> Weber problem
stock93
post Apr 5 2004, 08:17 PM
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I have a 2.0 type IV engine with 44idfs on it. I was going to sync the carbs today and noticed that even when not pumping the throttle the accelerator pump drips a stream of gas down into the throat of the carb enough that its pooling up a bit on the throttle plate. I'm getting popping back through the carbs. Timing is spot on and the valves are correctly adjusted. I take it this is a problem and they arent supposted to do this? It also smells like its still running to rich. I have 135 mains, 200 airs, 55 idles, 36mm vents, and no velocity stacks currently. Mixture screws are set 1.5 turns out. Its also hesitating from idle to around 3K rpm if I step on it hard like its flooding out. Time to put kits in the carbs? Does the jetting for the accelerator pump need to be changed or adjusted?

John
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Brad Roberts
post Apr 13 2004, 09:42 PM
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Anything over Idle on that hole would be lean if anything was blocking the main jet.

Brett,

I tried 55's in it and it would foul the plugs in no time flat. I'm down to 50's right now and it idles fine and starts perfect. Revs crisp with NO load and still stumbles on accel.

I checked compression yesterday: 120-125 on every hole. Not great.. but not bad enough to cause any real issues.

Next step is to check the valves. It sounds fine, but I realized it would not run correctly if they where tight. I'm getting a lot of reversion out of the velo stacks when I blip to wide open.

Help.


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