Does anyone know the model no. for a 1980 B310 Sunny S/w Hitachi A15 carby? I cannot read mine as its worn away on the side...
Also my float level is about .5mm above center, is this worth worrying about or is this acceptable for daily driving? And my car blows a considerable amount of grey/black smoke when i rev it above about 2500rpm, this is normally carb induced right? I have checked the carb trouble-shooting page but could not find anyway to quickly identify why it blows soo much smoke. Is this the mixture to rich and coz the cars burning to much oil??
Any info would be greatly used and would stop people from telling me to get rid of Datsun 'bombs' how dare they!!

Cheers
Dave

Try this for a quick diagnosis.
Remove the air filter & run your test again. If the problem dissapears, then replace the filter with a nice new one, PRONTO.

Half a mill above the dot in the glass is not normally a reason to pull the carb apart, but while you are removing the filter, have a look at the choke & make sure it is fully open. If not, fix that first.

Good advice from Dodgeman, and definitely the first things to check.
Quote:That is not normal, it is a serious problem causing pollution, poor fuel economy and needless wear on the engine. If it's not caused an unopened choke butterfly or clogged air filter, it may be a bad power valve inside the carb. Or the air jets may be clogged. Partial disassembly will be called for.