okay well i just finished doing my valves and timing everything is fine expect one thing, and thats my idle it only does it when the car is sitting there in N dosnet do it when driving or anything else.

car will sit there and RPMS will drop to below 100 and the car will almost stall out then it will jump back up to 800-1000 RPMS and just keeps doing that so i dont know what it could be if u guys have any info that would be of great help