How many miles on engine?
How often is gas added to tank?
When was gas last added to tank?
There are different formulations for gas, typically a summer blend and a winter blend.
You may be caught in the middle of a weather change, it is close to Thanksgiving...
Go top it off with best octane pump gas you can find, hopefully with no corn whiskey in it.
It would still be a very good thing todo the cranking test! XE cams can bite you. Your compression ratio may be a little high for that cam, even though it’s been ok until now.....
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.
Shut it off
Shut it off
Buddy, I just shut your Prius down... 
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