有些汽车,如NJ136型、BJ130和212型汽车,所使用的汽油泵,由于出油管接头直对气缸体,与气缸体之间的间隙只有33mm左右.更换化油器至该接头的油管很不方便。在接油管时.必须将油管一头弯成一个很小的钩,折成90°。若是铜质汕管.很容易将油管折裂.造成油管漏油或供油不畅:若是橡胶油管.也容易在此处开裂、漏油.而且因紧靠气缸体.温度高.容易 Some cars, such as the NJ136, BJ130 and 212 cars, use a gasoline pump that has a clearance of only about 33 mm from the cylinder block due to the straight connection of the delivery pipe to the cylinder block. Convenience. When connecting the tubing, the tubing must be bent one at a time into a small hook, folded 90 °. If the copper tube, it is easy to fracture the tubing, resulting in tubing leakage or poor oil supply: If the rubber tubing, but also easy to crack here, oil leakage. And because close to the cylinder body.