Fuel starve, or something |
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Fuel starve, or something |
arsprod |
Jul 26 2024, 02:56 PM
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#1
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Member Group: Members Posts: 210 Joined: 14-March 15 From: Indianapolis Member No.: 18,519 Region Association: Upper MidWest |
Teeners,
I swapped out the single carb that came with my 74 2.0 for new to me dual Weber 40's. It took a bit to get them jetted and adjusted but it's at least very close. The car runs great - and then it doesn't. With no consistency, it will start to stumble, cough, and backfire. Most of the time it works itself out though seems to be getting worse. I'm befuddled. (IMG:style_emoticons/default/confused24.gif) Here's what I know: - carbs are jetted main 145, air 200, idle 65, venturi 28 - plugs look ok, if anything rich - I don't seem to have any vacuum leaks - steady 3psi fuel pressure - timing and valves adjusted - new plugs Help! thanks Aaron |
technicalninja |
Aug 2 2024, 08:36 PM
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#2
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Senior Member Group: Members Posts: 1,825 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
Points and condenser should always be changed together IMO.
There's been a problem with modern aftermarket points not having decent plastic actuators/rubbing blocks and wearing stupid fast. Like adjust points and 3 hours of use later the blocks had worn enough, and the points need further adjustment. I use a dwell meter to adjust points. Here's an interesting shop prank use of condensers. You can charge them UP with a model train controller/transformer. Once it's charged if you touch both the lead and the housing at the same time it will SHOCK you badly. The bigger the condenser the bigger the shock! You charge it up, toss it to a work mate saying, "Check this out" and human nature takes over. We just can't resist touching the wire... A workmate had a BIG one off of a Model A Ford. He's gotten everyone in the shop with it at one point or the other. He could CLEAR all the mechanics out of the break room by tossing it on the table. A little electronic hand grenade! |
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