No start

[Mikey195612]

My 2000 5.0 explorer cranked just fine drove about 5 miles went in the store for about 2 minutes came back out and it hasn't cranked since, I have changed the key switch, the pats system and the Puter to no avail it backfireing through the exhaust any help would be greatly appreciated.

 

[Turdle]

Try this, to the letter, and report back

How to: - Ford Explorer Engine No Start Procedure

This procedure diagnoses a No Start engine problem. The procedure is based on information from the Ford Service Manual and my personal experience. The numbered steps should be performed in the order listed. 1. Does "THEFT" blink rapidly with ignition key in Off, On or Start? Yes: Verify key...

www.explorerforum.com

 

[Mikey195612]

No

 

[Turdle]

But you must

 

[Mikey195612]

I know I must so far I've checked the pats, Peter, cam sensor and the map sensor, and fuel pressure all I think I have left is the crank position sensor.

 

[Mikey195612]

Puter

 

[C420sailor]

use your scanner to verify you’re seeing an RPM above 0 when cranking. Mine was around 150+ but it varies.

 

[Mikey195612]

I don't have a scanner worth trying

 

[C420sailor]

parts cannon it is

 

[Pete Deering]

I don't have a scanner worth trying

Maybe try loaner tool at AutoZone or Advance?

 

[Mikey195612]

I will do something

 

[Pete Deering]

I will do something

I will do something

1st See if you have spark.
2. See if you have fuel . spray carb cleaner or starter fluid down the throttle body.
3. If it starts. Is your PAT system causing it. Or is it your starter?
4. comment Steps 2 & 5 above.
5. You lost me with your explanation in #1. Does it crank and does not start? Or nothing?
Battery?
Starter?

 

[Mikey195612]

I will try to clarify the engine turns over but no start even with starting fluid it backfires out the exhaust.

 

[Pete Deering]

Its sound like the timing is off. You need too manually rotate the engine too top dead center, remove the number one spark plug, and see if the piston is there.

The three things you need to run.
1. Air. It back fired.
2. Fuel. When you pull the plug , it will be wet.
3. Spark. Which you have. It back fired.

 

[Mikey195612]

Sounds like it has jumped time hun

 

[Turdle]

You can compare tdc to the position of cam sensor, but it does need to be compression stroke. If you took a picture of the cam sensor flag at both tdc positions we could look. A tool is needed to properly align it, but if the chains jumped it would be obvious there visually.

 

[C420sailor]

We have to define ‘backfire’

True backfiring out the intake is indicative of jumped timing. Exhaust popping and banging, what many people call ‘backfiring’ is less indicative

 

[Josh P]

Does the check engine light work and illuminate when cranking?

 

[Mikey195612]

Yes

 

[Josh P]

The check engine light illuminating is a good sign, there's a crankshaft sensor signal. You'll need to use a multi meter to verify power at the coil pack, and test that it's good. Have you checked the fuses and relays?