With problems in fuel lines, the main problem is just in the banjo fittings. It seems to be able to collect all kind of impurities flowing in the stream. This problem will appear mostly in old MTZ-tractors, specially, which has been not used for years. Problem is caused by corrosion in tanks. Rost is very capable of block these fittings, but donīt worry, cleaning fittings and regular driving will finish this problem.
Full exit with this problem is reached with plastic tanks, spare part numbers 1221-1101510 or ЯВАГ1221-1101510 with tractors with "hoist" witf one tank. 80-1101510 and 80-1101520 with two tanks.