 Rough Running w/ Dual Carbs, And now low fuel pressure too. |
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| Craigers17 |
 Jun 8 2024, 01:19 PM
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#1
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Senior Member  Group: Members Posts: 814 Joined: 5-August 17 From: Rome, GA Member No.: 21,317 Region Association: South East States 
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So I've been trying to track down a rough running issue with my 2056 w/ dual 40IDF's. It has not been running well for several months, and has had spells of sitting for a while. When these issues started, probably 9 months ago now, I changed out the old fuel filter and relocated the pump and filter to the front and upgraded both to the type that Tangerine sells. I also took that opportunity to install a stainless steel line and all new rubber lines. (the problem existed BEFORE I did all of this)
Recently, in the last week or so, I replaced both manifold and carb gaskets. I haven't actually opened up the carbs yet, but have cleaned all the jets. After this work, I had it running great for about a quarter mile, and then started backfiring and bogging down. I have a fuel gauge and also noticed that it is now only reading about 1.25 to 1.5. It normallly sits around 3 consistently. I suspected maybe I had a fuel line that was kinked under the tank, so I pulled it and they are fine with no leaks. I am thinking that the fuel filter may be clogged after having sat dormant for so long, OR, I might have some clogging going on in either my fuel "T" splitting the carbs or in the "T" that contains the gauge. My only other guess is that something is going on with the floats. I know this post is a lot, but if anyone has any ideas, please feel free to chime in. Thanks! |
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| Jack Standz |
Jun 10 2024, 11:16 PM
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#2
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Member Group: Members Posts: 433 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None
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QUOTE(technicalninja @ Jun 9 2024, 05:47 AM)  The little cheap ass round "tuner" gauges are notoriously inaccurate! (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/smile.gif) |
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| 930cabman |
Jun 11 2024, 04:59 AM
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#3
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Advanced Member Group: Members Posts: 3,834 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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QUOTE(Jack Standz @ Jun 10 2024, 11:16 PM) QUOTE(technicalninja @ Jun 9 2024, 05:47 AM) The little cheap ass round "tuner" gauges are notoriously inaccurate! (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/smile.gif) Agreed, where is a good source for us CSOB's? |
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| Craigers17 |
Jun 11 2024, 05:22 AM
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#4
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Senior Member Group: Members Posts: 814 Joined: 5-August 17 From: Rome, GA Member No.: 21,317 Region Association: South East States
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QUOTE(930cabman @ Jun 11 2024, 04:59 AM) QUOTE(Jack Standz @ Jun 10 2024, 11:16 PM) QUOTE(technicalninja @ Jun 9 2024, 05:47 AM) The little cheap ass round "tuner" gauges are notoriously inaccurate! (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/smile.gif) Agreed, where is a good source for us CSOB's? I'm not sure what you all consider cheap, but here's a link similar to the one I bought. It is made by Aeromotive and has a release valve built in. It has been very reliable up until now, and I'm not sure it's malfunctioning....I suspect the pump. More testing info to come. https://www.googleadservices.com/pagead/acl...CEF0&adurl= |
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Posts in this topic
Craigers17 Rough Running w/ Dual Carbs Jun 8 2024, 01:19 PM
Shivers Once I had my carbs set, jetted and timed with the... Jun 8 2024, 02:06 PM
Craigers17
Once I had my carbs set, jetted and timed with th... Jun 8 2024, 05:51 PM Superhawk996
Once I had my carbs set, jetted and timed with t... Jun 9 2024, 11:03 AM Osnabruck914 As far as fuel pressure goes, I do remember that w... Jun 8 2024, 04:32 PM Craigers17
As far as fuel pressure goes, I do remember that ... Jun 8 2024, 05:55 PM technicalninja #1 dead head fuel supply into gauge. If still 1.5 ... Jun 8 2024, 04:47 PM Craigers17
#1 dead head fuel supply into gauge. If still 1.5... Jun 8 2024, 05:58 PM technicalninja I've rebuilt hundreds of carbs, mostly America... Jun 8 2024, 06:09 PM mate914
I've rebuilt hundreds of carbs, mostly Americ... Jun 8 2024, 06:54 PM BENBRO02 Mine was running poorly with dual carbs (backfirin... Jun 8 2024, 09:10 PM Craigers17
Mine was running poorly with dual carbs (backfiri... Jun 9 2024, 03:30 AM technicalninja
[quote name='Craigers17' post='3149860' date='Jun... Jun 9 2024, 11:21 AM 930cabman Have you checked the fuel flow? Disconnect the fue... Jun 9 2024, 05:21 PM Craigers17 So last time I posted, I had a suspicion that my f... Jun 10 2024, 06:03 PM technicalninja You did have some nastiness.
Looks like a goober ... Jun 10 2024, 08:46 PM Jack Standz Just set the float level on IDF carbs. 12mm was t... Jun 10 2024, 11:09 PM Jack Standz
As far as fuel pressure goes, I do remember that ... Jun 10 2024, 11:13 PM Craigers17 Thanks everyone for the additional input. The flo... Jun 11 2024, 05:24 AM 930cabman
Thanks everyone for the additional input. The fl... Jun 11 2024, 05:28 AM Craigers17 So I wanted to post an update on this just because... Aug 10 2024, 10:43 AM Superhawk996 There is no magic that accounts for the change in ... Aug 10 2024, 02:02 PM Craigers17
There is no magic that accounts for the change in... Aug 10 2024, 05:23 PM Superhawk996 I’m with ya’, that filter media looks fine. N... Aug 10 2024, 05:32 PM 930cabman
I’m with ya’, that filter media looks fine. ... Aug 12 2024, 04:57 AM |
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