3.0 valves AGAIN

[Redwood650]

Burnt exhaust valve seats on my 05 with 65000 miles bone stock. Getting ready to swap the heads with these:

http://cgi.ebay.com/ebaymotors/Ford...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

$200 for a complete set of heads. These heads have Tungsten Carbine Valve seats which apparently are 3 times stronger than steel and are supposed to keep this from happening.

 

[Big Jim M]

Howdy Red
Burnt valves isn't a valve problem...It is a fuel problem. If you don't find and repair the fuel problem the next set of heads will burn their valves also.
Big JIm

 

[Redwood650]

Howdy Red
Burnt valves isn't a valve problem...It is a fuel problem. If you don't find and repair the fuel problem the next set of heads will burn their valves also.
Big JIm

Well I was told the valve seats are what go bad. There is an ebay seller offering 2 rebuild heads for a great price. He uses Tungsten valve seats and that is suppose to keep this from happening. So what do you suggest I do to fix this "fuel issue"? Thanks for your help!

 

[crf250r6]

i have another friend have this happen to him too and he's had 20k miles on the new valve seats and still no problem, to where as mine happend again after 10k.

 

[crf250r6]

and to find the fuel problem should just start testing sensors, it does ping so thats a sign of lean right.

 

[Rearanger]

it does ping so thats a sign of lean right.

Some good discussion here on pinging:

http://dodgeram.org/tech/gas/Trouble/ping.htm

I also found this: "An improperly torqued knock sensor can cause the sensor to not
function correctly resulting in knock and/or loss of power. Failing knock
sensor."

Not sure how plausible this can be.