[dklumpp]

My 2015 charger I just bought starts right up when it's cold but if I drive it and let it sit for an hour or more it takes about 3 seconds until it fires up. Seems like a fuel pressure issue but I don't want to throw a 1000 pump at it if that's not the cause. I have not hooked a fuel pressure gauge to it yet to see if it's bleeding pressure or no pressure on crank. Anyone else experience this?

 

[dklumpp]

Battery is brand new it's not a voltage issue or slow cranking issue

 

[baabootoo]

My 2015 has 54K, and never happens. Any fuel smell/blue smoke on startup?

 

[dklumpp]

No

My 2015 has 54K, and never happens. Any fuel smell/blue smoke on startup?

No

 

[baabootoo]

Hmmmmm, ok.

 

[HughJass]

The ECU used the coolant temp sensor signal to determine fuel requirements. This is where I would start....

 

[dklumpp]

I'll check it out. if I shut it off hot, let's say to get gas, it will fire right up. It's only after heat soaking for at least an hour

 

[dklumpp]

The ECU used the coolant temp sensor signal to determine fuel requirements. This is where I would start....

Where is it located?

 

[HughJass]

Sensor locations?

Is there a break down of the hellcats sensors location somewhere? Oil pressure, coolant and iat's. Actually all of them would be great.

www.hellcat.org

 

[dklumpp]

Where is it located?

Found it. I just did a radiator and thermostat on it so is it possible there is an air pocket? The sensor is reading 172 and it's definitely warmer than that. Reads normal while driving

 

[HughJass]

Test the sensor using ohms

 

[dklumpp]

Sensor is fine. I'm guessing it's going to be a fuel pressure issue.

 

[Blickie]

My 2015 charger I just bought starts right up when it's cold but if I drive it and let it sit for an hour or more it takes about 3 seconds until it fires up. Seems like a fuel pressure issue but I don't want to throw a 1000 pump at it if that's not the cause. I have not hooked a fuel pressure gauge to it yet to see if it's bleeding pressure or no pressure on crank. Anyone else experience this?

What is the Fuel Pressure in the Fuel Rail when it won't start? Get a fuel pressure gauge attached to the rail and leave it.

From cold engine and gauge attached, watch the gauge & start the engine & note pressure. Simulate the drive, the shutoff, the wait. Before starting, open the hood and note fuel pressure. Then start the engine while watching the fuel pressure. This is a box you should check.

Videos would be great.

Let us know....

 

[dklumpp]

So went to hook up the fuel pressure gauge and of course, mine is a 15 and doesn't have a service port on the rail. So, no worries I have a MAC master fuel injection set with 50+ fittings and adapters....nope hellcat inlet line must be 7/16 or larger as the set didn't have the right adapter. Called my dodge dealer and they do not have the hellcat fuel line service kit. Grrrrrrrrr. Anyone know where I can get the adapter or at least what size that fuel line is?

 

[dklumpp]

58psi during extended crank. Possibly an injector leaking? Here is the data log only thing that jumps out is the fuel trims show a rich condition

 

[Blickie]

58psi during extended crank. Possibly an injector leaking? Here is the data log only thing that jumps out is the fuel trims show a rich condition

The O2S11 Value is Negative:

What do the o2s11 voltage numbers mean? - Search (bing.com)

 

[dklumpp]

The O2S11 Value is Negative:

What do the o2s11 voltage numbers mean? - Search (bing.com)

I'm kinda confused on this if the sensor were bad shouldn't it set a code or at least a pending code?

 

[Blickie]

I'm kinda confused on this if the sensor were bad shouldn't it set a code or at least a pending code?

Research the value to understand the normal range & if it will set a code...

 

[dklumpp]

Research the value to understand the normal range & if it will set a code...

Yeah I did that and it's quite confusing does anyone else's o2 read like this? And also is it because it's running super rich or bad sensor? I can't find anything to compare it to

 

[dklumpp]

Fixed! I replaced all the injectors and problem solved. Either they were clogged or leaking either way it's fixed. Thanks for the help!