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Volvo P1800 Carburetor Fuel Leak Repair

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My car’s carburetor was leaking petrol, noticed that few days ago. Minor petrol leak, but still not safe to drive.

Obverved the leak and monitor it for few days, I suspect the leak was from the edge between the cap and the cup, so it might be the gasket issue. There could be other problems inside but I decided to first change the gasket to try out.

Ordering the gasket from oversea costs around USD6, but have to wait for few weeks. I am quite impatient so I decided to order the gasket roll paper locally and custom cut the gasket myself. There are two thickness available: 4mm and 8mm. I decided to get the 8mm type.

Ordered the rolled gasket paper 3 days ago and received it today. Cost of the “CRANFLEX Gasket Paper 0.8mm Made In England Petrol Oil Fuel Resistance Kertas Gasket – Quality Product – 0.8MM X 3FT X 1FT” is just RM10 + RM4.50 shipping.

Reached home after work at 6pm and immediately I went to dissemble the fuel float cup from the carburetor and started the repair work. Dissembling is quite easy, just remove 3 screws on top. I noticed that one of the screw is NOT original (using philips thread instead of flat line thread as per the other two screws).

I am glad that the original gasket is still there in good shape and I can use it as a template for my new custom cut gasket.

Not a perfect cut, a bit oversize. I have to trim the internal part a bit further to make it fit into the cap neatly. Outer part is oversize but that’s fine.

Put the cover back onto the cup and tighten the 3 screws firmly.

Started the car and observed the cover for a few minutes. No more petrol leak. The gasket seems to be working fine. Problem solved. 😅