Start up

Hey guys,

Need some help on why my truck has a problem on ignition. It cranks up but won't turn over unless I step on the gas. It also smells like fuel when cranking. Any ideas?

 

Everytime?

 

This is just a guess, but throttle position sensor?

I hate to suggest that because it is just a guess but when searching, it might be a key phrase to try.

 

You need to define these terms "cranks up, and turn over".

 

Sounds like the terms are in reverse order, should be "turns over but will not crank". To me cranks indicates engine is running whereas turns over indicates starter turns flywheel but engine does not fire up and run.

 

Crank = Turns over

https://www.quora.com/What-does-engine-cranking-mean-What-happens-if-it-doesnt-crank

 

OK, but OP says it cranks but won't turn over. What gives with that?

 

I'm guessing it'll attempt to start, I. E. Cranking, but won't start without giving it gas, I.e. Turn over.

 

That is what I got out of it too.

OP due to the smell of fuel when cranking it sounds like you may have a leaky injector.

 

Motor? Displacement

 

Is this after it's warm?

Injector maybe?

 

Sorry, what he said is exactly what I meant. It doesn't do it every time and usually does it when the truck has already been driven within a couple hours.

 

When I shut the the engine off and start it up again after it has this problem, it starts up fine.

 

Coolant temp sensor, maybe

 

Is it acting like it's flooded?

If it is happening mainly after the engine is warm it could be an injector issue.

Does it idle rough or have the mpgs dropped recently?

 

Idles fine but the mpg has dropped some

 

Are you getting a check engine light coming on?

 

Nope

 

I'm leaning on dirty/bad fuel injectors too like mentioned earlier.. If it were a bad o2 sensor you should be getting a check engine light.

 

What can I do for cleaning the injectors? Hopefully will not have to replace them