Okay, help with my motor, was: "carb dial in help? (webber IDF 44)" |
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Okay, help with my motor, was: "carb dial in help? (webber IDF 44)" |
VaccaRabite |
Jul 5 2008, 12:31 PM
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#1
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
*edit* Note, cylinder bank 3/4 is not firing. Plugs are oil fouled. All four cylinders have decent compression, considering that the rings probably are not set yet. Carbs are fresh rebuilt, I have yet to check spark.*/edit*
I have set my idle at 1K rpm. Idle adjustment screws for the 3/4 bank is almost all the way out. Idle adjustment screw for 1/2 bank several turns in. Both carbs are idling at 5 kg/h according to my flow meter. Mix screws for all 4 carbs are 2.5 turns open. When I open the throttle to ~3K rpm, the 3/4 bank only sucks slightly more air. The 1/2 bank jumps up to about 15 kg/h. So, where am I off. I have my weber tech manual too, but thought I would ask here to see if I got a faster "ah-ha" type answer (like usual). |
Jake Raby |
Jul 5 2008, 07:31 PM
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#2
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Why are they oil fouled? Carbs won't cause that.
Do a,leakdown and compression check. It sounds mechanical to me. Swapping carbs will tell if there is an issue with a carb, if the problem follows the carb, thats what it is.. If it maintains the issue on the 3-4 bank its something else. Process of elimination. |
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