T-Lezzz
Active Member
My 225 /6 in my dart sport is running rich around town, when i get on the highway it either straightens out or i don't notice the smell anymore. it's got a holley one barrel on it. anyne know what may be causing it?
My /6 is running rich
- Thread starter T-Lezzz
- Start date
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float set too high.
But you should also tell us the year the make and the model of the car. There is a world of difference between a 76 valiant with california emission and a 61 lancer with no emissions and they are both 1bbls.
But you should also tell us the year the make and the model of the car. There is a world of difference between a 76 valiant with california emission and a 61 lancer with no emissions and they are both 1bbls.
BillGrissom
Well-Known Member
For sure. I know of 3 different 1 bbl carbs used, and those varied considerably from 1962 to 1976. Post photos. If running rich, your mileage will be bad. Besides the carb, it could be a non-functioning cylinder (no spark or no compression) passing raw fuel. If so, the spark plug will look real clean. Could also be running lean at idle so it is mis-firing, which also passes raw gas.
T-Lezzz
Active Member
75' dart sport, 225 slant 6 georgia car (no cats on the exhaust) 1 bbl carb.
T-Lezzz
Active Member
not sure of the exact model of the carb just that it's a holley 1bbl
2 Darts
A-body Addicted
The 75 should be running a Holley 1945. There are 7 variants that cover 49-state manual & automatics, CA manual & automatic, and CDN manual & automatics. Settings are different for each one.
To identify your carburetor clean off the sides and look for the data. IIRC the info should be on the side over the idle mixture adjustment screw. It should read something like 1945-R7018A . This example is for a 1975 225 w/automatic, 49-state emissions calibrations.
To identify your carburetor clean off the sides and look for the data. IIRC the info should be on the side over the idle mixture adjustment screw. It should read something like 1945-R7018A . This example is for a 1975 225 w/automatic, 49-state emissions calibrations.
BillGrissom
Well-Known Member
Some diagnostics in increasing cost:
a) check carb float level, clamp timing light pickup over each spark lead and insure each gives a spark
b) compression check all cylinders and note spark plug conditions
c) add O2 sensor to exhaust and lean/rich indicator.
a) is most likely problem (as others mentioned), without c) you will always be "flying blind".
a) check carb float level, clamp timing light pickup over each spark lead and insure each gives a spark
b) compression check all cylinders and note spark plug conditions
c) add O2 sensor to exhaust and lean/rich indicator.
a) is most likely problem (as others mentioned), without c) you will always be "flying blind".
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