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#1
05-06-2024, 05:33 PM
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center carb flooding
First of all please read carefully. I have a center carb that floods over on the FIRST start up after the car has been sitting for a few days. After that the carb is fine until the car is parked and left again. Once the problem has corrected itself it will not happen again no matter how many times the car is started. This set up has been on several engines over the 30+ years that I have had it with no problems. It sat for several years before I put it on this basically stock 389 a year ago so before installing it I replaced the needles/seats and accelerator pumps and cleaned everything. Last year it ran fine. I thought maybe the float drop was too much and when the gas dried up in the bowl the needle valve would stick down so I limited the drop a little. I also lowered the float level a tiny bit. No help. This only happens on the FIRST start after being parked. There is NO gas in the float. The car has a stock replacement fuel pump from AMES and no back up electric pump. Thanks for any help.
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#2
05-06-2024, 06:14 PM
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Well it’s 100% has to be something with the float or the needle hanging up now for some reason since it did not have this issue last year and your other two carbs are fine even though they are not passing any fuel at idle, there just sitting there with full fuel bowls.
Why don’t you swap the needle and around from the center carb into one of the end ones and see what takes place.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#3
05-06-2024, 07:21 PM
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And swap the float also.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#4
05-06-2024, 11:24 PM
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Worth a try.
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#5
05-07-2024, 04:49 AM
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What year of center carb?
1965 center uses a smaller float than in the end carbs, also all end carbs uses .086" inlet valves w/o pull clip. 1965 center uses a .101" inlet valve and 1966 center uses a .120" inlet valve. With original style brass floats the needle pull clip needs to be correctly mounted in float arm to avoid binding of needle. I always use the correct size and original style inlet valves to avoid problems in the fuel inlet system. |
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#6
05-07-2024, 10:40 AM
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1965 carb. I ordered the correct n/s and assumed it was correct.
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