Sizzler has a strong influence on its close neighbor Jet. Jet will stop its activity for a while during and after Sizzler's eruption. For a time it was referred to as 'Super Frying Pan' but this name is not popular now since the term 'frying pan' does not accurately describe this feature. Spasm is the ragged feature close to the boardwalk by Clepsydra. Its behavior has varied significantly over the years and the formation was altered by a steam explosion which has restricted most recent activity to boiling or eruptions of less than 3'.
Water rises in the two vents and usually starts to boil steadily before the pool reaches overflow.
This often occurs a couple of hours prior to an eruption of Fountain. Eruptions of 1-3 feet have been seen sometimes closer to the start of Fountains play but frequently the pool only boils. The runoff from Fountain floods into the pool and Spasm drains as the water level in Fountain recedes following its eruption.