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  #21  
Old 11-08-2013, 12:01 AM
dalboa dalboa is offline
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Where to go from here? Well, I know that the cylinders are testing 175psi now so I believe it's not a problem with broken valve springs, the cylinders are getting fuel and spark as seen in the video. The truck was running fine for prior owner until as if a switch was thrown and it decided not to immediately. I don't think its the PCM since the coils are getting power. I've got only one direction so far as I can tell. The catalytic converter? I think I'll check some muffler shops in the morning for plugs and drill the hole (1/4") fore and aft the converter and check for pressures. Course if I've had the right amount of coffee prior I'll make the aft hole first.
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  #22  
Old 11-08-2013, 12:27 AM
dalboa dalboa is offline
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Hey Hydrex, I did that once on a 930 turbo. Learned the hard way, gotta pull the cable off every battery now prior to charging. Unbeknownst to me, next morning I slide behind the wheel and 20 miles off the car comes down with the flu. I'm racking my little brain wandering what's wrong. Car wasn't charging, alternator bad, apparently fried it somehow with the charger. I had only set it on 12volts as it was supposed to get down to 0 that night. Cost me a couple hundred dollars and the wait to order one in!
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  #23  
Old 11-08-2013, 02:07 PM
dalboa dalboa is offline
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Join Date: Nov 2013
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Vehicle: 2003 Ram 1500 4x4
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Color: Black
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 0
Rep:20
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I removed the forward O-2 sensor and started the engine to see if there was a marked difference. Actually seemed to run worse. The exhaust system looks pretty good and I've send a message to prior owner asking him if he remembers just what age the system is. I'm starting to rule out the catalytic converter.
Three of the cylinders #1-5-2 have plugs in them that look nearly as clean as when I installed them new. The other five cylinders the plugs look dark and sooty. There is plenty of spark in the cylinders. I checked four scattered last night and their fine. Any suggestions? Thanks
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  #24  
Old 11-09-2013, 12:16 PM
dalboa dalboa is offline
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Prior owner says exhaust system is 4 yrs old. I've taken the intake off to examine for cracks, leaks. Don't see any problems there. I was a little astounded to find that there was no pressure on the fuel line as I came to the point whereby removing the fuel line was necessary. Had lots of pressure when I began this project. I've not checked fuel pressure as my set doesn't fit this truck. I'm going to hunt down a adaptor now and get some new intake seals.
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  #25  
Old 11-10-2013, 12:19 AM
dalboa dalboa is offline
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Here's my current major problem discovered today with the #3 cylinder. Had I known this was happening I wouldn't have been running the truck trying to figure out the myriad of codes I was getting. The regular running like it was on a very bad tank of gas went to sounding like a leprechaun in the engine with a small sledge hammer. Knew that wasn't going to be good. From what I can determine, the exhaust valve dropped and is now pierced into the piston. I had checked cylinder psi on this one to be 175 several days ago. Any ideas on how this happened and how the beginnings of the end could have been the reason for different codes popping up?

http://i763.photobucket.com/albums/x...um01/image.jpg
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Last edited by dalboa; 11-10-2013 at 12:31 AM.
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  #26  
Old 11-10-2013, 01:08 AM
dalboa dalboa is offline
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Anyones' input on attempting to remove #3 piston without pulling engine from truck would be helpful? Oil pan looks relatively accessible except at back and there appears to be something with the trans that will have to be removed to get to oil pan bolts. All I plan to do if the cylinder walls aren't scarred is to remove the rod and piston and install new with bearings. Not sure of clearance for getting in there with a torque wrench.
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  #27  
Old 11-10-2013, 09:16 PM
dalboa dalboa is offline
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I'm on the oil pan. Its bolts are all removed, trans dust cover off, front cross member down, engine mounts loose, can't get it to drop. Anybody whose done this whom would like to afford me some insight would be appreciated.
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  #28  
Old 11-10-2013, 09:39 PM
Tommycat Tommycat is offline
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As far as I know you can't pull the pan without lifting the engine. It gets hung up on the crank. Sorry we didn't catch the valve issue. But from the PSI ratings it seemed good. I wouldn't recommend only replacing one piston. You'll have it open and have access to them all, may as well get them out of the way so you don't have to come back to them in a couple years. But your call... I'd just assume do a rebuild, replace all the internals(you'll want to tear it down anyway to make sure you don't have little chunks of piston roaming around the oil passages). Last thing you want is your daughter relying on strangers when she's broken down on some back road. Do it right brother.
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  #29  
Old 11-10-2013, 10:35 PM
dalboa dalboa is offline
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Join Date: Nov 2013
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Vehicle: 2003 Ram 1500 4x4
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Hey I appreciate your help Tommycat, my concern with doing a full blown rebuild is that 1 my daughter is impatient and 2 I have a feeling she's not gonna be as in love with the truck when the reality of 13mpg set in.
About the oil pan, there is some room that it should be able to drop first before I need to lift the engine for final clearance. I've read not to pry on it and that the gasket is part of the windage tray. I've railed on it a bit with a plastic mallet but you would think it's still bolted on. All the bolts to the pan are off, I must admit I did use a large screwdriver and carefully tried to pry the pan being mindful to watch the metal lip but to no avail. Reluctant to hit it very hard. There's not alot to be learned from google on the subject. Even the manual would have me believing that it's ready to be dropped.
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  #30  
Old 11-11-2013, 02:26 AM
Tommycat Tommycat is offline
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My guess is prior owner had the pan gasket replaced by an RTV fan. Try a gasket scraper to see if you can get that between the gasket and the pan. If nothing else you will find the bolt you forgot to pull lol. I guess it is possible to pull the pan without lifting the engine all the way.

Still she might fall in love with the HEMI, so you may be replacing the remaining pistons. But you know your daughter better than I do, so, your call.
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