m20b20 not starting

[thirdkid]

Well it hasnt started for quite awhile now. Battery is charged also. Thought it was the ignition switch and has been replaced. Changed main relay also.

No the problem is it wont start. Fuel pump isnt priming, and when i turn the key itl go on and off as if the battery was pulsing if that makes any sense? Any help needed

[Sagaris]

Sounds like a bad connection. Either at the battery terminals, the grounds, the starter, or the starter itself isn't doing so well. If the bushings/bearings in the starter are binding up, it will draw a lot of current and act like it isnt getting enough current, but a bad connection will do that as well. Check those connections first, and if the fuel pump still isnt priming, check the crank position sensor and the fuel pump relay.

[thirdkid]

Yup checked the fuel pump relay and was fine. Did a trigger test and clicked. Will have a look at the starter tho. Was afraid crank position sensor was going to come up. Anything to look out for with the CPS?

[matt0300]

If cps is bad u wont get fuel or spark, chack if ur getting spark and to check fuel pump I think but not 100% see if ur getting power at pin 30.