 Fuel spray from carb. Haha (sigh*), Any experts in MD? |
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| jaredmcginness |
 Sep 14 2021, 05:57 PM
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#1
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...  Group: Members Posts: 502 Joined: 12-June 19 From: Baltimore Member No.: 23,209 Region Association: MidAtlantic Region 
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Trying to get my 914 1911cc dual dells timed today. Been down for a while.
While setting ignition timing fuel started spraying from the bubbling guy circled here. This is the main air corrector right? (IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23209-1631663874.1.jpg) Any idea on cause? It might be time for me to throw in the towel on setting dual carbs, I know it will never be perfect with hex linkage. But man, it’s frustrating. (Especially when it was functioning previously - albeit poorly) Unless we have a pro here in Maryland, that I can trade a case of beer to help set me straight, it might be time to look for a reputable aircooled shop to get this thing timed and running well so I can DRIVE it this fall. |
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| anderssj |
Sep 14 2021, 08:29 PM
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#2
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Dog is my copilot... Group: Members Posts: 1,652 Joined: 28-January 03 From: VA Member No.: 207 Region Association: MidAtlantic Region
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Hi Jared,
IIRC, mine did that when the entire stack (main jet, emulsion tube, and air correction jet) had loosened up--i.e., come slightly unscrewed. You may also want to take out your idle jet and make sure the little o-ring is in good shape. Sorry, that's all I can think of right now. I'm about 1500 miles from the car and my Dell books (IMG:style_emoticons/default/headbang.gif) Hope this helps! Steve A- |
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| r_towle |
Sep 14 2021, 08:48 PM
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#3
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Custom Member Group: Members Posts: 24,563 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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This behavior indicates to me there is too much fuel pressure inside the carb. Might check the float, needle valve etc to make sure it closes properly. If the car sits too long with today’s fuel it is entirely possible that the needle valve seat can get clogged up.
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| VaccaRabite |
Sep 15 2021, 11:54 AM
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#4
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En Garde! Group: Admin Posts: 13,423 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I am guessing that the stack has simply come a bit loose in its bore. The good news is that its easy to check.
If its tight in its bore, then probably the o-ring needs to be replaced or as Rich said the carb is getting too much fuel. I once had a float jam and had fuel start pouring over the top through my velocity stacks! |
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| Tdskip |
Sep 16 2021, 06:13 AM
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#5
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Advanced Member Group: Members Posts: 3,684 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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@jaredmcginness let us know if making sure that circled bit is fully tightened fixes it.
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| jaredmcginness |
Sep 16 2021, 10:00 AM
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#6
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... Group: Members Posts: 502 Joined: 12-June 19 From: Baltimore Member No.: 23,209 Region Association: MidAtlantic Region
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I will check this afternoon fellas, I am pretty certain it is tight, and the O rings were replaced when the carbs were rebuilt. (less than 120 miles) so this sounds like a float issue.
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| yeahmag |
Sep 16 2021, 11:05 AM
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#7
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Advanced Member Group: Members Posts: 2,421 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California
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Those look like the wrong air correction jets for a Dellorto DRLA on a VW motor. Never seen anything like those. Typically the air correction jets stand proud of the base of the carb by a good 2".
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| GregAmy |
Sep 16 2021, 11:19 AM
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#8
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Advanced Member Group: Members Posts: 2,267 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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QUOTE(yeahmag @ Sep 16 2021, 01:05 PM)  Those look like the wrong air correction jets for a Dellorto DRLA on a VW motor. Never seen anything like those. Typically the air correction jets stand proud of the base of the carb by a good 2". (IMG:style_emoticons/default/agree.gif) Mine certainly do...see item #7 in the below diagram. - GA Attached image(s) 
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