wounded 5.7 hemi

[whitehemiram]

ok I am new here first dodge truck. I have owned this truck for 3 years its an 04 ram 1500 5.7 hemi. One day about 3 weeks ago it started to misfire I did plugs and wires because the plugs were burnt right off shocked it ran at all lol. Now it idles really rough and chugs really bad at hwy speed only between 1300 and 1600 rpm otherwise fine at hwy speed until today it started back firing and dying at hwy speed and is spraying fuel out the exhaust any help would be awesome...

 

[Brakelate]

You have a cylinder that is not firing. Go back and look over the work that you just did.


How many miles on the truck?

 

[Redtruck-VA]

I would do a compression check and read the plugs to help determine which cylinder is not firing. I would also mainly because it is a 04 check the valve springs just for peace of mind.

 

[whitehemiram]

it has 275,000 km's on it and has run perfect till now I went over all the wires again today. it is on the #2 cylinder I moved the coil still says #2 misfire replaced one coil that was dead. valve springs was next project but its driving me nuts

 

[whitehemiram]

ok ordered the 6.9 300 srt springs that are dodge dealer told me the best replacement for these. I broke an exhaust valve spring on #2 and am going to do all 16

 

[Sparkyy]

Excuse me for being ignorant but where are these magical little springs and how did you get access to them?

Any how tos I should look at?

 

[NYCruiser]

Under the valve cover

 

[MegaMouseGW]

Under the valve cover

Mr Obvious.

 

[whitehemiram]

ok thanks for all your posts. I ordered the valve springs went to change them I had a push rod out on #2 cylinder changed that rod did springs it's running better but hoping it will get better. t is not missing anymore but still feels under powered but better

 

[Redtruck-VA]

Any codes? Maybe a compression test would tell if you have a weak cylinder.

 

[whitehemiram]

Any codes? Maybe a compression test would tell if you have a weak cylinder.

I think it may just be the valve was not operating the cylinder was full of fuel and crap no codes and starts with a click of the key I changed those 2 plugs again and it is no longer spraying fuel out the exhaust. It is also no longer misfiring.

 

[Redtruck-VA]

Well done...

 

[whitehemiram]

and it continues lol I have a massive vacuum leak I thinkit is not missing anymore but now idling at 500 rpm and gutless. checked all cylinders and they are good and I can't hear my cai anymore no rushing air no exhaust noise that was there lol. does anyone have a vacuum diagram for the 5.7 thank you for everything

 

[whitehemiram]

ok so now can't drive it at all after everything it will run for 30 secs and quit red lightning bolt flashing p0300 code egr code and another code my scanner says hrt??? Now I have taken this well till this point lol now my patience is wearing thin I love my truck. Any idea where to go next. It has a new egr 3months ago all 4 02 sensors at the same time 2 new coils new plugs and wires I did notice yesterday that my battery gauge is really high when running looks like its over charging but not sure. I did find a broken ground wire on the valve cover that is just a tiny strap that runs on one bolt I don't understand lol. Help please

 

[Redtruck-VA]

Weak batteries can cause all kinds of problems.
This what I found with a search.
P0300 Dodge Cylinder Misfire Fault Detected Random Cylinders OBDII Engine Light Trouble Code | Engine-Codes.com

I would charge the battery and freshen all of the grounds to start with. Check fuel pump, it runs for 3 seconds on start up and then the ASD relay shuts off the pump and voltage to the injectors and coils if the crank sensor doesn't sense the engine rotating (running). I'd check the electrical connections and sensors. Good luck.

 

[whitehemiram]

thanks for that redtruck that is my plan for the day

 

[whitehemiram]

ok replacing that push rod and battery got rid of all codes started my truck ran for about 2 mins now misfiring worse got dtc p0205 open injector on cylinder 5

 

[Redtruck-VA]

ok replacing that push rod and battery got rid of all codes started my truck ran for about 2 mins now misfiring worse got dtc p0205 open injector on cylinder 5

I would guess you didn't get the injector plug connected properly. I would unplug and inspect the pins before sticking back together.

Good luck..

 

[whitehemiram]

Ok so heres how it ends for now lol I got all dtc's taken care of #5 injector was plugge. now It changed nothing so I pulled the passenger valve cover off #2 push rod out again I swapped it for the #4 push rod truck runs like a top now. any idea how to correct this to stop it from happening again.

Thanks guy's especially you redtruck

 

[Redtruck-VA]

Can you see anything wrong with the push rod? Is it's length the same as the others? Is this a 5.7 push rod? Could it be a soft spring allowing the push rod to jump?