Hello,
I have another post going but for some reason I cannot reply to it so I'll start this one. If someone is able to move please feel free too.
I recently built a 5.4 3 valve motor for my brothers 2004 F150. His old motor locked up. I purchased a replacement motor from a gentleman who wrecked his 2004 F150. He purchased the motor two years ago from O'reilly Auto Parts. He provided the paperwork and everything checked out. I took apart the motor anyways to have it cleaned, new pistons, rings, bearings, timing components, valve train components, oil pump, cams, and head studs. I called the company who rebuilt them for the store, Powertorque and confirmed the cylinder head and block year to ensure I purchased the correct lash adjustors. I put a 340HV oil pump on, new timing chain/guides, metal tensioners, phaser lock outs, new lash adjustors, new roller followers, valve springs/seals, head gasket, head bolts, and Comp Cams 127010 Thumpr cams. While installing I also added a set of pacesetter long tube headers. After replacing the motor (pain in the A** in this truck) I disabled all rear 02 codes, COT protection, manifold protection, rear 02 sensors, and disabled VCT. Loaded it up and fired the truck up. It didn't run very good. It will start right up but doesn't have any power. It will run till about 150 degrees water temp and than shut off. It won't restart until the engine is cold again. I removed all of the coils and replaced. Same thing. All new coils and bad coils tested good too so I just wasted money :-(. I did put new motorcraft plugs in before the swap and 02 sensors.
My fuel trims are really high. In the 30 plus range. When I went to give it a little throttle is back fired a little from the exhaust :-(???.
Some other information:
I wasn't able to hook the Y-pipe up to the muffler due to the Y-pipe being too short.
Before swapping I did a cylinder leak down test and all holes are good.
I triple checked my timing before installing the valve covers and front cover. I even went as far as getting the part numbers off the cams and calling comp cams to make sure what side is which. (wanted to make sure comp marks left & right side the same way as Ford does.
All of my followers are on. (I installed cams and chain without the followers than put them in with a spring compressor (no keepers fell out)
When I timed it and put the followers in I verified number one valves were shut at TDC.
I hooked up my pressure oil primer and kept the motor lubed up while I rotated the crank 100 plus times until the colored links lined back up (made a mess and my arm is still swollen LOL)
I used the OTC tools to line the crank and hold the cams in place.
Fuel pressure is good
No leaks in exhaust to 02 sensors.
Oil pressure is good (used mechanical gauge)
Fuel trims are very high
Cam angle error shows 1.5 percent??
I have no clue of tuning Ford. I've done lots of GM and Daimler products.
I did not delete the IMRC - Reading online, lots of people say it's a good idea too for cams??
Before I tear apart the motor again to check timing :-(. Would someone mind reviewing my log. My question is does this sound like a timing issue, vacuum issue, or tune issue? I know every GM I've cammed will at least half as* run on the stock tune(not good but does). This truck wouldn't even make it to the muffler shop.
Also, does anyone know of any Ford tuners that use HP Tuners? I'm thinking I should just pay someone to tune it and will attempt to learn Ford at a later time. If anyone hear does, send me a PM and lets talk because I'm tired of looking at this truck LOL.
I'd like to get this done before my brother returns from his deployment.
I appreciate all of support and advice.
Thanks,