 Dual 40 IDF'S really weird . . . ., defective Spanish casting???? |
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| ghettojet |
 May 14 2023, 08:44 PM
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Newbie  Group: Members Posts: 6 Joined: 20-March 22 From: queens new york Member No.: 26,409 Region Association: North East States  |
1.8 engine rebuilt by me.New Weber IDF's from CB Performance.
Engine is being bench run Fuel pressure 3.0lb,even tried a little less at one point. Good strong spark all around Timing is on. No gas in idle circuit cylinders #1 & 4 Mixture screws on this carb have no effect took apart carb,blew air through idle jet passages double checked float height. all good. Compression good engine has a few hours on it Finally I swapped carbs Problem follows the carb Now #2 & 3 not "participating" air correction 2.00 emulsion tubeF-11 Main 1.15 Idle .50 Venturi 28mm Only thing I can think here is that the actual casting is defective internally? Seems far fetched Am I missing something? not sure what I can do except return carb to CB Performance Would rather not do this Please advise |
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Posts in this topic
ghettojet Dual 40 IDF'S really weird . . . . May 14 2023, 08:44 PM
Superhawk996 This is a confusing post to me . . . But maybe I�... May 14 2023, 09:50 PM r_towle “engine has a few hours on it”
How is that po... May 14 2023, 10:20 PM
Front yard mechanic Take them apart again and make sure to check float... May 15 2023, 05:48 AM  |
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