Multiple Misfire 2009 Ram 1500 5.7 - Need Help

[Stoodis]

Hi guys, new to posts and ram 5.7 truck in General. But basically my issue is the multiple misfire code I am getting, and it does not show me which cylinder is actually misfiring. I had got the truck for a fair price due to misfire on cylinder #5 and did all the basic tests and ended up needing to change the camshaft and lifters, I did everything that I honestly feel was proper in the tear down/rebuild. I replaced camshaft, lifters, head gaskets, exhaust manifold gaskets, head bolts, upper cam phaser (VVT). Originally I didn’t get the timing correct and vehicle wouldn’t start, so I had to tear back down and redo the timing, after doing that I put the engine back together and started the truck, only to start horrible with a very rough Idle which ended up stalling out and not starting again. With codes p0300, p2008, p2017. And originally the only code was misfire on cylinder #5. I don’t know where I could have gone wrong! Or even, how could I diagnose where the issue is coming from? Whether it’s pushrods, vac leak or something else rather? Thanks to anyone who has some advice to offer!

 

[Burla]

Never done one but it appears like your intake runner is cocked in the bore, I think it is rubber. Did you even touch that? Ignore the misfire code which is cool because most of the time you have a laundry list to check, it is something going on with your runner. When you take it off, my guess you will easily see this. It is kinda a pita, so get more opinions before doing this.

 

[Wild one]

Hi guys, new to posts and ram 5.7 truck in General. But basically my issue is the multiple misfire code I am getting, and it does not show me which cylinder is actually misfiring. I had got the truck for a fair price due to misfire on cylinder #5 and did all the basic tests and ended up needing to change the camshaft and lifters, I did everything that I honestly feel was proper in the tear down/rebuild. I replaced camshaft, lifters, head gaskets, exhaust manifold gaskets, head bolts, upper cam phaser (VVT). Originally I didn’t get the timing correct and vehicle wouldn’t start, so I had to tear back down and redo the timing, after doing that I put the engine back together and started the truck, only to start horrible with a very rough Idle which ended up stalling out and not starting again. With codes p0300, p2008, p2017. And originally the only code was misfire on cylinder #5. I don’t know where I could have gone wrong! Or even, how could I diagnose where the issue is coming from? Whether it’s pushrods, vac leak or something else rather? Thanks to anyone who has some advice to offer!

Do a compression test.The Hemi is an interferance engine,and if you had the timing out,and tried to start it,it might have bent a valve,or a pushrod.Compression test will tell you if you have issues with either a valve or pushrod

 

[Burla]

I see there is other possibility then a cocked valve peter, whatever the term is for that thing in the valve that protrudes out. Could also just be clogged. Either clogged or cocked the bad air flow causes the misfire.

 

[Burla]

I wonder if you can actually bend that thing when doing engine work, probably not, just brainstorming to the why. If you hit it hard or something. Or dirt got in vac, dunno. Couldnbt see one for the hemi, but you see this guys was just stuck.

how to fix Intake manifold runner control ( p2004 )

This is a 2009 Patriot it was throwing a p2004 check engine code . Intake manifold runner control stuck open. #diy #mechanic #checkenginelight

youtu.be

 

[Stoodis]

@Wild one @Burla thanks guys, I will check and see what’s going on probably tomorrow as I have a full free day to go and do some more work

 

[jws123]

Id bet money on a Intake push rod not clicked in all the way or missed the hole happens all the time and will cause random multiple missfires pull valve covers turn engine over check to make sure they all move and that they are clicked in all the way.

 

[Stoodis]

@Wild one @jws123 ok so I managed to get home and do compression test with cylinder 8 and 6 pushing 0 psi while others vary from Cyl 1 -150, Cyl 3 -210, Cyl 5 - 180, Cyl 7 - 170, Cyl 2 - 190, Cyl 4 - 180

 

[jws123]

@Wild one @jws123 ok so I managed to get home and do compression test with cylinder 8 and 6 pushing 0 psi while others vary from Cyl 1 -150, Cyl 3 -210, Cyl 5 - 180, Cyl 7 - 170, Cyl 2 - 190, Cyl 4 - 180

Yep so check the push rods on cylinder 8 and 6 bet they are not clicked in or in the wrong hole easy to do It will cause no compression.

 

[Burla]

True pushrods the most common issue with cam install, wouldnt it be ticking if the pushrod wasnt cupped?

 

[jws123]

True pushrods the most common issue with cam install, wouldnt it be ticking if the pushrod wasnt cupped?

Not if he installed them into the oil drain holes in the head ive done it before if the intake valves cant open wont rly have any compression.

 

[Stoodis]

@jws123 alright sounds good, I will pull the cover and check it out tonight, I want this running asap! I cross my fingers that’s all it is!

 

[Wild one]

@jws123 alright sounds good, I will pull the cover and check it out tonight, I want this running asap! I cross my fingers that’s all it is!

If it does turn out to be a couple pushrods out of place,make sure you eyeball them up for straightness.Here's hoping that's all it is for you.

 

[Stoodis]

@Wild one @jws123 hey guys, so a little good and bad. The good is that I did have pushrods out of place, and they looked good, didn’t roll them though. And the truck started and ran better than before! That’s for sure! But I have misfire on cylinder 8, and I noticed the rocker was movable still after torque to spec. After compression test it was still getting 145. Any tips as to what I need to do to fix this issue?

 

[Stoodis]

I should also mention that I can hear a ticking/tapping sound coming from cylinder 8 while I throttle

 

[Wild one]

@Wild one @jws123 hey guys, so a little good and bad. The good is that I did have pushrods out of place, and they looked good, didn’t roll them though. And the truck started and ran better than before! That’s for sure! But I have misfire on cylinder 8, and I noticed the rocker was movable still after torque to spec. After compression test it was still getting 145. Any tips as to what I need to do to fix this issue?

If it's pumping 145,it sounds like the valves are all good. I'd run it for a day and see if it gets any better.It can take a few miles to get everything pumped up and working properly.With the spread you have on your compression test,the motor sounds like it's a bit tired,so i don't know how much more money i'd throw at it,before i considered swapping it.

 

[Stoodis]

If it's pumping 145,it sounds like the valves are all good. I'd run it for a day and see if it gets any better.It can take a few miles to get everything pumped up and working properly.With the spread you have on your compression test,the motor sounds like it's a bit tired,so i don't know how much more money i'd throw at it,before i considered swapping it.

Alright sounds good! Thanks, buuut what would you do to fix the tapping sound or maybe you know a post I could read?
Also how difficult is a swap? You ever do one?

 

[Wild one]

Alright sounds good! Thanks, buuut what would you do to fix the tapping sound or maybe you know a post I could read?
Also how difficult is a swap? You ever do one?

You're in the Bridge,join the Alberta GCSRT8 Owners page on facebook and hunt up Evan Abel on the page,and see if you can get him to listen to it for you.He runs a pretty healthy Jeep out of the Bridge. I forget if Tach Tech / Dan lives in Lethbridge or the Hat,but i think Dan also lives in Lethbridge.

 

[Stoodis]

@Wild one alright sounds good! Thanks for all the advice! I will be using these posts a lot more, very helpful, informative and fast responses!

 

[Dusty]

I should also mention that I can hear a ticking/tapping sound coming from cylinder 8 while I throttle

Did you prime the new lifters before installation?

Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, factory dual exhaust, 18” wheels. Build Date: 3 June 2018. Now at 94793 miles.