Whats wrong with my Carbs?, wants to stall leaving the traffic light. |
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Whats wrong with my Carbs?, wants to stall leaving the traffic light. |
HansJan |
Mar 25 2017, 09:12 PM
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#1
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Member Group: Members Posts: 394 Joined: 5-April 16 From: Sugar Land TX Member No.: 19,860 Region Association: Southwest Region |
Hello,
Not having much luck with the Search function. The car: 1972, with 103mm cylinders (2.3l), aftermarket cam and larger valves with double springs. Fuel supply: Dual EMPI HPMX 44 Carburetors, Jets: .55 Idle, 1.55 main, Air 1.75. History: After car-fire engine was out, heads taken off and some studs and springs replaced. Changed to quieter exhaust. Had trouble with dialing in the carburetors and changed the jets to the recommendations from EMPI (see above). It runs a lot better now. Remaining complaint; The car runs pretty good (especially above 2,800) RPM. However; It takes me a while to leave after each stop (stop signs traffic lights etc) because the car want to stall. When I push the accelerator to quickly the RPM dips down, and car will die. Only when I ease on the paddle very gently, it will increase in RPM, and I can lift clutch at above 1,500 RPM. Anyone here understands this issue? |
rhodyguy |
Apr 5 2017, 07:19 AM
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#2
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,054 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Or use 1 idle speed adj screw to raise the idle. The other carb will follow suit and that carb's isac will be off the stop. When you now measure side to side flow you avoid an artificially balanced state that's dependent on the idle speed screws. One goes out of play once it's off the stop and the balanced state is dependent solely on the linkage. If it's out of wack the carbs will be too. If there is a bunch of side to side slop with the cross bar and worn heim joints, you will be struggling. Continuously.
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