Need help! 5.3 running like crap after cam swap
#1
Need help! 5.3 running like crap after cam swap
Hello all, this is my first time posting so Let me start off with telling you that I'm no professional and I've only learned how to work on vehicles by trial and error.
Here's the story, About a month ago I had a head gasket blow due to the cheap ebay gaskets I used when replacing both of my heads about 3 years ago (I know but I was on a budget and i learned my lesson). So since I was going to be pulling the heads I'd figure that I would replace the lifters and cam while I was in there in hopes to get rid of the lifter noise. In the end I decided to do a few extra upgrades: lunati cam 212/218 .531/.531 LSA/ICL: 113/109, lifters, and springs, new timing chain and cam gear, pacesetter shortys and a magna flow duel exhaust. I also got the heads milled,cleaned, and tested and got a nice set of Victor gaskets.
After the engine was put back together I started it and it wouldn't start unless I stepped on the gas and i soon as I took my foot off it would die. When it was running it felt like half the cylinders were misfiring and i had a large amount off white smoke coming from the exhaust. I double checked all wire connections Then i checked the new spark plugs and all of bank 2 still look new but all of bank 1 are carbon fouled. When I installed the cam I lined it up dot to dot but did not degree it but I doubt that would cause it to run that way. I going to do a compression test tomorrow but wanted to know if there is anything else I should do to diagnose this problem. Thanks for the help.
Here's the story, About a month ago I had a head gasket blow due to the cheap ebay gaskets I used when replacing both of my heads about 3 years ago (I know but I was on a budget and i learned my lesson). So since I was going to be pulling the heads I'd figure that I would replace the lifters and cam while I was in there in hopes to get rid of the lifter noise. In the end I decided to do a few extra upgrades: lunati cam 212/218 .531/.531 LSA/ICL: 113/109, lifters, and springs, new timing chain and cam gear, pacesetter shortys and a magna flow duel exhaust. I also got the heads milled,cleaned, and tested and got a nice set of Victor gaskets.
After the engine was put back together I started it and it wouldn't start unless I stepped on the gas and i soon as I took my foot off it would die. When it was running it felt like half the cylinders were misfiring and i had a large amount off white smoke coming from the exhaust. I double checked all wire connections Then i checked the new spark plugs and all of bank 2 still look new but all of bank 1 are carbon fouled. When I installed the cam I lined it up dot to dot but did not degree it but I doubt that would cause it to run that way. I going to do a compression test tomorrow but wanted to know if there is anything else I should do to diagnose this problem. Thanks for the help.
#3
So i let run for 10 or 15 seconds and only the driver side header is getting hot so I'm not getting spark and/or fuel to bank 2. I pulled the intake to look for any loose grounds but all wires seem to be attached. What else would cause bank 2 to not fire? What am i looking for when testing the plug to the coil pack?
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#9
#10
TECH Senior Member
iTrader: (5)
Ok i pulled diagram for 05, so pink wires are power black is ground.. Both banks ground to left side of engine... See if you have power on the pink wire while the key is on... The bank 2 injectors and coils pull power from inj1 fuse, bank 1 pulls from inj 2.... This assuming the pcm is doing what it should because you obviously have injector pulse on bank 1 anyway...