420A My car won’t start

[pdodson18]

I just installed my exhaust and havnt started it in around 4 weeks and after installing it I try to start it and I get crank no start this is really pissing me off because this always happens to me and literally have no clue why.The fuel pump kicks on. I have a quarter of gas.
Please anyone?
I need to check spark. I will let yall know as soon as I do that but I havnt replaced any sensors and I’m thinking if I dont have spark it could be the CPS which is behind a cover on my passenger wheel correct? And is it difficult to find the connection? The interior footwell lights flicker when I crank it. The crank also got slow. Maybe I drained the battery and it’s not giving enough juice to the starter?


Update. Just charged the battery and still won’t start. Doesn’t flicker lights anymore tho. Probably have no spark.
Just checked for spark. And I have nothing. Wtf how.

 

[BLACK'98DSM]

That's where it it is on the 4g63. On the 420A it's on the backside of the block above the passenger CV axle. Check the connector to make sure it isn't oily and has a clean connection. It's common for leaky valve covers to fill that connector with oil. Before lifting the car though check for spark and make sure it is or is nit the problem. No part of a catback exhaust install should cause a no start issue.