Cranks over but no start

Step one is always to read and record the diagnostic fault codes. The people at most auto parts stores will do that for you for free. If you cannot get the truck there, you will need a simple code reader to read the codes yourself.

Do you have a 5.7L or a 6.5L? The 6.5L is a diesel, and I do not think you will be looking for spark on that one!

For the 5.7L, the best suspects are the crankshaft position sensor and the camshaft position sensor. The Engine Computer needs the signals from them for spark and injector timing.

Easiest is to get a code reader. I use a scanner but for this it does the same thing, just costs a real lot more.

The crankshaft position sensor is behind the vibration damper. The camshaft position sensor is inside the distributor. Those are for the 5.7L engine. If you have something else, you have to tell me which engine you have.

Hello Mrjaxx,

Here is a link to an article that features written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning. Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com. Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
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