Help, Cam / lifter change 4 miles truck stops

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rod7515

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2011 Ram 5.7 Hemi. I did the cam/lifter replacement and all went well. Also replaced the oil pump with hellcat pump, replaced the VVT solenoid and the timing chain and gear along with new phaser.
Pulled the fuel pump fuse and and cranked over at 10 seconds intervals to prime for the oil pump. After about 6 or so cranks I replaced the fuse and the engine immediately started. Lifters rattled for about 1-2 seconds then got quiet. Engine sat and idled great. Topped off the coolant and let it idle for about 20 minutes while I watched temp and oil gauges. All good. The coolant had settled in and the heater was working so I knew the core was flushed from air pockets.
Time for test drive. Went about 2 miles at 40-45 and running great. Tried kick down and downshifted smooth and motor is very quiet. Slowed down and turned and went about 1.5 miles At 35-40 mph. Very slight upgrade went to accelerate and truck had shut off. Drifted onto side road. Tried to start and it cranked only. No fire. cranked more no fire.
Had AAA tow me home. Will check it on Monday. Being honest it sounds like may have jumped time. Not sure how that would be possible. I can tell you I torqued the cam plate, phaser, the tensioner and guide and oil pump. I’ve worked as a mechanic for 30+ years and I know that sucking misfire sound when cranking and timing has jumped.
‘My parts were from summit racing, Melling cam, sealed power lifters, Melling phaser, Melling chain gears and tensioner. Mopar hellcat pump, Melling pickup. All OEM replacements except for oil pump as that was the upgrade to get better lubrication.
Guess I will pull valve covers first and look at valve movement then go from there.
Any other ideas or suggestions?
Thanks Rod
 

jws123

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Its probably something stupid but check compression that will tell ya if you jumped time because you would of bent a valve not much room for error when it comes to timing on a hemi. I had a truck come to me once someone over torqued the cam phaser bolt so it stretched and after a 100 miles it sheared off the cam pin.
 
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rod7515

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JWS123, thanks for the Reply. So here would be a question about your sheared cam bolt. When that happened did it take out the cam index pin? If so are they replaceable or does the cam need to be purchased.
I did torque that bolt to 90 ft lbs as required. But if something happened in the timing area that is the only thing I could see going wrong.
Also did it bent valves in more than one cylinder? Im se it would be at least 2 or 3.
thanks Rod
 

jws123

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JWS123, thanks for the Reply. So here would be a question about your sheared cam bolt. When that happened did it take out the cam index pin? If so are they replaceable or does the cam need to be purchased.
I did torque that bolt to 90 ft lbs as required. But if something happened in the timing area that is the only thing I could see going wrong.
Also did it bent valves in more than one cylinder? Im se it would be at least 2 or 3.
thanks Rod
Yes it sheared the locating pin its replaceable I have a whole bag of them if it somehow ends up being that. It bent few intake and exhaust valves had the heads rebuilt did you scan it for codes? Not really common for these things to jump time its a rather simple setup only thing i could see if it did jump time a guide fell off or ya forgot to pull the pin to release tensioner.
 
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rod7515

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Yes i did scan it for codes and there are no codes. The pin was definately pulled as its on my tool box. Now that you ask about codes i would think if it were a cam bolt i would get a code because there is a sensor or pickup for the phaser on the side of the timing cover?
The worse thing is i cant look at it until tuesday and its driving me crazy thinking about it. Lol.
thanks for your help. I should know more by middle of the week.
Rod
 
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rod7515

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I didn’t have much time this week to work on the truck but I was able to get the drivers side valve cover off and verified that the rockers are opening and closing the valves. Now I know that doesn’t tell me much but it probably removes the possibility of the cam bolt shearing off.
Before I take the timing cover back off should I check anything else?
Could something have failed in the phaser that could cause timing to be way off?
Could using the hellcat oil pump and having higher oil pressure have caused any problems?
The truck ran great for the 20-25 minute warmup and then 4 mile drive. It didn’t make any noises when it shut down although I doubt you would have heard anything even if it did jump time and valves would hit piston tops.
Just looking for thoughts and ideas until I get it apart to verify.
One more thing, once I get timing cover off how many times do I have to manually turn engine over to verify it didn’t jump time? May be many until marks line back up. When do I stop turning if marks don’t line back up? 20, 30, 40?
Thanks, give me your thoughts.
‘Rod
 

jws123

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Before you tear anything else apart check compression verify spark fuel ect.
 
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rod7515

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I forgot to say in last post i did check compression on cyl's 1 n 3. Had zero so i stopped with that ugly feeling in my stomach. I'll check the rest later today then pull the frt cover.
Thanks Rod
 

DILLIGAF

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I dont remember how many turns it takes ,but its a lot.

I just used a cam degree tool instead. much faster and it double checks your work.

HC Oil pump wouldn't cause this either.
 
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rod7515

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How do i verify the spark with coil packs?
Thanks Rod
 
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