Carb parts
Posted: Thu Apr 16, 2020 6:01 pm
I have a 1966 Minor with a 1275 engine from a '68 Midget.
A fuel leak recently developed from the pipe seal at the bottom of the float bowl. With that sorted, I now have another leak that seems to be coming from a deteriorated pipe to the jet, presumably on its last legs before I disturbed it. On taking the carb apart I also appear to have a slightly bent needle. The car ran very well at any engine temperature, and ambient temperature, but has always smelt slightly rich from the exhaust. That said, the plugs are a reasonable colour, it has never failed a (visual) emissions test and fuel consumption is about what you'd expect.
Obviously, I need to replace the jet. Unless I can just replace the pipe? I also need to replace the needle.
- carb is an SU HS4 1.5" (FZX1146 on the float bowl lid) part originally from a Mini
- jet is stamped with AUD4795, and is a waxstat/capstat and seems to have a black "identication sleeve" around the pipe, though it is very perished and may have just lost its actual colour
- needle is an ADE
I don't seem to be able to find a like-for-like replacement jet. Does anyone have a suggestion of which jet, plus needle, would be suitable as a replacement?
I'm slightly embarrassed to admit I haven't done much more than clean the float bowl out on on the carb on this car. It's always run perfectly. I've removed the engine to change the clutch, done the head gasket, changed the diff plus suspension all round but the carb is a mystery to me.
Many thanks for any help.
A fuel leak recently developed from the pipe seal at the bottom of the float bowl. With that sorted, I now have another leak that seems to be coming from a deteriorated pipe to the jet, presumably on its last legs before I disturbed it. On taking the carb apart I also appear to have a slightly bent needle. The car ran very well at any engine temperature, and ambient temperature, but has always smelt slightly rich from the exhaust. That said, the plugs are a reasonable colour, it has never failed a (visual) emissions test and fuel consumption is about what you'd expect.
Obviously, I need to replace the jet. Unless I can just replace the pipe? I also need to replace the needle.
- carb is an SU HS4 1.5" (FZX1146 on the float bowl lid) part originally from a Mini
- jet is stamped with AUD4795, and is a waxstat/capstat and seems to have a black "identication sleeve" around the pipe, though it is very perished and may have just lost its actual colour
- needle is an ADE
I don't seem to be able to find a like-for-like replacement jet. Does anyone have a suggestion of which jet, plus needle, would be suitable as a replacement?
I'm slightly embarrassed to admit I haven't done much more than clean the float bowl out on on the carb on this car. It's always run perfectly. I've removed the engine to change the clutch, done the head gasket, changed the diff plus suspension all round but the carb is a mystery to me.
Many thanks for any help.
