Search found 2 matches

by 72datsun
Wed Mar 18, 2015 9:26 pm
Forum: Tech & DIY Conversion Info
Topic: a12 rich and lean cylinders
Replies: 3
Views: 2699

Re: a12 rich and lean cylinders

no 1 and 4 plugs are black and no 2 and 3 plugs are clean i just got car out of storage 3 or 4 months back. put all new plugs points condenser leads. It gets a good hot run once every 2 weeks. gets driven at least 2 or 3 time to work a week. work is'nt far away about 5 or 10 min drive. i let it warm...
by 72datsun
Tue Mar 17, 2015 7:15 am
Forum: Tech & DIY Conversion Info
Topic: a12 rich and lean cylinders
Replies: 3
Views: 2699

a12 rich and lean cylinders

Hi everyone

I just removed and engine out of my 1200 to do oil seal. When i pulled the spark plus out i noticed cylinders 1 and 4 are rich and cylinders 2 and 3 are lean. Its a completely standard engine. Standard carb and manafold etc. Any suggestions on what it could be?