Hey guys my name is Derrick I'm new to the forum. Recently bought a 2005 F-150 XLT with the 5.4l 3v Triton. I did a complete timing rebuild thanks to fordtechmakuloco for the tutorial. Genuine Ford parts through the entire timing process and spark plugs (I got super lucky and no sparkplugs broke) and ignition coils. I checked the VCT solenoids and they were pretty clean. Replace the oil pump with the melling 360 Hv Crank it up and all seemed pretty good. But now my issue is when I'm going down the road it kind of sputters after around 40 miles per hour unless I give it full throttle then it kind of bogs a little bit and then gets going again. driving on the highway is a little rough because it's hard to get it up to Pace with the traffic. It recently through the code p2198 and p0446 I believe. I'll check again on my lunch. Love the truck just got to get the little kinks fixed. Thanks in advance!!!

 

Also. I noticed that whenever I get in it to get it started in the morning I have to turn the key a couple times to let the truck prime because it won't start up on the first turn. I'm hoping it's not fuel pump issue. Also forgot to mention 2005 Ford F-150 XLT 4 x 4 the truck has 213,xxx not 100% sure about the motor because the stamps on it (valve cover) say that it's from 2006.

 

https://www.f150forum.com/f38/po446-...roblem-240260/

i guess start here

 

Thank you for the reply. the thing is with mine I forgot to mention that the previous owner put a cold air intake on the truck. I'll go through with checking the p0446 code with the link you sent me. You think maybe the cold air intake might be letting too much air into the truck? Thanks again for the reply!!!

 

you get mad props in my book for the timing job lol

you can do that, you can figure these out

 

dude... lol if it didn't work I was gonna throw the whole truck away lol 🤣😂 Damn that thing was a pain... Ive rebuilt 302 and 351 and this takes the cake lol

 

Well I think I may have traced it to the issue. I turned the key and watched the fuel pressure go up to almost 50psi and dropped down to like 3psi in about 3 secs. Anybody have a recommendation for fuel injectors besides these 05 ones because of the issue that I've been reading all day about them leaking. Again thanks.

 

Wow, that is wild, can you pinpoint which injector? Also, great find!

like turn the ignition on, and then pop the sparkpulgs out and see which one has a soaked cylinder?

I gotta imagine replacing a few injectors cant be that bad, did you have to take them off for the timing job? Could it be a bad seal where the injector connects to the rail?

 

I I plan on taking the spark plugs out either tonight or tomorrow morning. in all honesty I didn't have to take much of the top-end off besides the valve covers and the coils. Out of curiosity does anybody have any experience with the Motorcraft 5144 injectors? probably just going to change out all the injectors because I don't know if the previous owners have done anything with them or not especially with the extended warranty/recall that was out because of how faulty they were.