d_man1
New Member
- Joined
- Jan 15, 2010
- Messages
- 62
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 2002
- Make / Model
- Ford
- Transmission
- Automatic
Ok, so I have been dealing with my damn truck for almost 2 years... low idle, random misfire problems in only piston 6 aka P0306. HORRID gas mileage, were talking about 16mpg... well starting thursday and ending today, I have found the reason why, and its VERY common!
If you are receiving a P0301-0306 code WITHOUT the P0316 code (ignition problem) and have ruled out a bad injector (do so by checking the impedance with a DMM) then guess what time it is!?!
PULL THE HEADS! yup, on our lovely little 3.0L you will notice once you pull the heads take a gander at the EXHAUST valve seat. notice a nasty little grove? well there you go... thats the problem right there! over time and time again of opening and closing that area begins to wear and recess. The only way to fix this is by
A. Having the heads re-seated with hardened seats IF the recess is no bad enough and enough metal is left
B. Purchasing new Heads AND having hardened seats placed
also
-dont be a cheapo, buy all brand new head bolts.
-Purchase a High quality gasket set! replace all the gaskets as you go
-BEFORE YOU START THE REBUILD CLEAN THE SHIT OUT OF ALL THE PARTS!!!!!
Pictures of the recessed seats are uploading
Lastly, I know how it feels. It sucks. I hated having a truck that was running like shit. Words of encouragement, just tear into it! get the job done! all in all I spent about $550 total due to the fact that I know an individual that has been rebuilding engine at a shop for over 25 years.
-Don
EDIT: This seriously should be a sticky... I will do a solid writeup on the proces of elimination
If you are receiving a P0301-0306 code WITHOUT the P0316 code (ignition problem) and have ruled out a bad injector (do so by checking the impedance with a DMM) then guess what time it is!?!
PULL THE HEADS! yup, on our lovely little 3.0L you will notice once you pull the heads take a gander at the EXHAUST valve seat. notice a nasty little grove? well there you go... thats the problem right there! over time and time again of opening and closing that area begins to wear and recess. The only way to fix this is by
A. Having the heads re-seated with hardened seats IF the recess is no bad enough and enough metal is left
B. Purchasing new Heads AND having hardened seats placed
also
-dont be a cheapo, buy all brand new head bolts.
-Purchase a High quality gasket set! replace all the gaskets as you go
-BEFORE YOU START THE REBUILD CLEAN THE SHIT OUT OF ALL THE PARTS!!!!!
Pictures of the recessed seats are uploading
Lastly, I know how it feels. It sucks. I hated having a truck that was running like shit. Words of encouragement, just tear into it! get the job done! all in all I spent about $550 total due to the fact that I know an individual that has been rebuilding engine at a shop for over 25 years.
-Don
EDIT: This seriously should be a sticky... I will do a solid writeup on the proces of elimination
Last edited: