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Car Forum / MINI / November 2004help with carb
I'm a novice with cars and I had to change the head gasket on my 78 austin mini with an HS4 carb. which meant that I had to take the carb off. in the process of taking it off the hose with the spring on the jet came out of the float chamber without the nut being unscrewed. my problem is that I can't get the hose to stay back in. does that mean I broke it, or is there some trick to get it to stay? thanks in advance. >I'm a novice with cars and I had to change the head gasket on my 78 austin >mini with an HS4 carb. which meant that I had to take the carb off. in the >process of taking it off the hose with the spring on the jet came out of the >float chamber without the nut being unscrewed. my problem is that I can't >get the hose to stay back in. does that mean I broke it, or is there some >trick to get it to stay? thanks in advance. The fuel feed from the float chamber to jet is held in at the bottom of the float chamber by a rubber compression gland/washer. As you tighten up the brass union, it compresses the washer which should seal the pipe in. Unscrew the brass union nut and check the condition of the rubber sealing gland.  SignatureChris Morriss So if the pipe came out of the nut, does that mean I need to get another jet assembly? I think I can see the washer seated in the float chamber. Not really sure though. I could take a picture of it if that would help you help me. >>I'm a novice with cars and I had to change the head gasket on my 78 austin >>mini with an HS4 carb. which meant that I had to take the carb off. in [quoted text clipped - 11 lines] > Unscrew the brass union nut and check the condition of the rubber sealing > gland. >So if the pipe came out of the nut, does that mean I need to get another jet >assembly? I think I can see the washer seated in the float chamber. Not >really sure though. I could take a picture of it if that would help you >help me. No, it should be possible to re-fit the pipe. It's a long time since I used an HS-series carb (I have HIF series on the cars now, which uses a completely different float chamber). If the carb is off the car, unscrew the brass nut and carefully prise out the rubber seal. It should be obvious how it all goes together. There is usually a brass washer between the gland nut and the rubber seal so that the seal doesn't get twisted as you tighten up the nut. SignatureChris Morriss Got some exploded diagrams of the su carbs if you need one, there in PDF format, Steve. > >So if the pipe came out of the nut, does that mean I need to get another jet > >assembly? I think I can see the washer seated in the float chamber. Not [quoted text clipped - 10 lines] > There is usually a brass washer between the gland nut and the rubber > seal so that the seal doesn't get twisted as you tighten up the nut. Yes, please. Anything that will help, I'd appreciate it. Thanks. > Got some exploded diagrams of the su carbs if you need one, there in PDF > format, [quoted text clipped - 17 lines] >> There is usually a brass washer between the gland nut and the rubber >> seal so that the seal doesn't get twisted as you tighten up the nut. And Elvis was sitting next to patrice in the spaceship, which I thought was kinda weird, but then they turned to me and said: > I'm a novice with cars and I had to change the head gasket on my 78 austin > mini with an HS4 carb. which meant that I had to take the carb off. in the > process of taking it off the hose with the spring on the jet came out of the > float chamber without the nut being unscrewed. my problem is that I can't > get the hose to stay back in. does that mean I broke it, or is there some > trick to get it to stay? thanks in advance. Have you lost the short length of metal tube that is pushed into the end of the plastic pipe? If that's missing, the gland won't grip the pipe properly. > And Elvis was sitting next to patrice in the spaceship, which I thought > was kinda weird, but then they turned to me and said: [quoted text clipped - 10 lines] > > If that's missing, the gland won't grip the pipe properly. Hard brittle broken off in there. |
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