My EA81 won't run well for some strange reason. It doesn't want to idle or the rpms fluctate from sputtering to 3k, then sputter, then 3k. Fuel pump is good, just changed carb with no change in attitude. Blew out fuel lines, nothing. Any ideas?

Serious vacuum leaks - how is your EGR hooked up? Is it working?

 

GD

EGR seems to be hooked up fine. Dunno if it works yet, might swap off another motor I got laying around. The vac lines have been messed with. I rearranged some to where they should go, I hope, using reference off the other motor.

F It. Motor Swap Saturday.

Sounds like it could be electrical. Check the plugs/leads/rotor/cap/timing/points if you have them.

check you coil , then check your points..change a few leads for known good ones off another engine,coil lead could be the culprit..and i am sure you will find the problem...cheers