CharlieWhiskey

i copied it off from the service manual. (Printed service manual from Nissan Motor Company, Tokyo, Japan.) I wished to send photo but will need to figure out how to do so.

my bad, I mistaken it was L20. here is the spec. DAF328 L16 main jet #115 ( both Primary and Secondary ) Main Primary air bleed #240, Secondary #120 Slow jet Primary #48 Secondary #180 Slow air bleed Primary #180, Secondary #100 Slow Economizer Primary 1.8mm ( 0.0709") Economizer bleed Primary 1.8mm (0.0709")

The filter is made of metal. When changing the filter, the bolts must be torqued down. There is a lot of ATF behind the filter, and if you apply a little air pressure to it, it will come down due to the release of "surface tension."

confirming to have sufficient intake manifold vacuum. If the vacuum is not enough to lift the plunger rod up from the power value, or if the vacuum is lower than specified, the plunger under the air horn will press down on the power valve to release more fuel. Make sure the power valve, which is in the bottom of the carburetor body, is tight and secure as well.

Additionally, you can use a carbon monoxide (CO) detector to find out if exhaust gas is coming from the radiator's top.