Flex-Fuel Gurus
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Joined: Feb 2007
Posts: 771
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From: Aurora
Originally Posted by MazdaRangerGuy
OK guys... got an update. Our scanner has an EGR test... you can manually tell the computer how far to hold the EGR open, in 10% increments.
At idle, I hit 10%.. no change... 20%.. nothing.. 30% nothing... 40%.. engine starts bucking and missing, just like I had full vacuum applied to the valve.
I removed the valve... found what I found normal carbon buildup on the pintle, etc.. but it moved freely. Just for the heck of it I sprayed it out with intake cleaner a few times then again with penetrating oil.. while manually opening and closing it... let it dry out then reinstalled... (By the way.. the tube came loose very easily.. probably because i had it off to inspect it awhile back)
INSTANTLY got a smoother idle (still not perfect but 90% better) and smoother acceleration.. drove it home.. pinging was 90% gone as well!
Now here I am a couple days later.. pinging is coming back and it's getting a little rough again. I think I'm going to remove it again and work with cleaning it for awhile (or maybe just buy a new one, but I'm trying to be cheap here)... see what happens.
At idle, I hit 10%.. no change... 20%.. nothing.. 30% nothing... 40%.. engine starts bucking and missing, just like I had full vacuum applied to the valve.
I removed the valve... found what I found normal carbon buildup on the pintle, etc.. but it moved freely. Just for the heck of it I sprayed it out with intake cleaner a few times then again with penetrating oil.. while manually opening and closing it... let it dry out then reinstalled... (By the way.. the tube came loose very easily.. probably because i had it off to inspect it awhile back)
INSTANTLY got a smoother idle (still not perfect but 90% better) and smoother acceleration.. drove it home.. pinging was 90% gone as well!
Now here I am a couple days later.. pinging is coming back and it's getting a little rough again. I think I'm going to remove it again and work with cleaning it for awhile (or maybe just buy a new one, but I'm trying to be cheap here)... see what happens.
Just an instant thought. They don't last long, so I figured I'd type them out before they fade away........
Fred
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Joined: Jul 2006
Posts: 601
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From: Denver
The 3.0s have a tendency to ping after they get some miles on them, generally accepted that its due to carbon buildup in the combustion chamber.
I find that a little acetone does wonders for cleaning up dirty injectors and carbon deposits. (I know some guys think that acetone is like the plague, but if you're careful, it will do some good.) I use 5-6 oz per tankful, and find that 3 or 4 tanks in a row will clean stuff right up. The challenge is to find a little bottle that won't melt when you put acetone in it - get a bottle of fingernail polish remover (mostly acetone) from your wife/gf/daughter and fill it and carry it with you to the gas station. Make sure you don't let the acetone get on the paint, as its a good paint remover too...
Colder plugs is a good idea to consider too. The Motorcraft ones are colder with the smaller number - going from 22 to 12 is colder.
I find that a little acetone does wonders for cleaning up dirty injectors and carbon deposits. (I know some guys think that acetone is like the plague, but if you're careful, it will do some good.) I use 5-6 oz per tankful, and find that 3 or 4 tanks in a row will clean stuff right up. The challenge is to find a little bottle that won't melt when you put acetone in it - get a bottle of fingernail polish remover (mostly acetone) from your wife/gf/daughter and fill it and carry it with you to the gas station. Make sure you don't let the acetone get on the paint, as its a good paint remover too...
Colder plugs is a good idea to consider too. The Motorcraft ones are colder with the smaller number - going from 22 to 12 is colder.
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Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Finally found Bob Ayers 2003 post to all 3.0L FFV owners, about the proper heat range spark plugs. It was the AGSF-12PP.
Here is the tread https://www.ford-trucks.com/forums/1...fv-owners.html
Here is a thread with a link to pictures of Bobs AGSF-12PP plugs, with 50K miles on them. in case your wondering if they were too cold a plug for him to use in his FFV 3.0L https://www.ford-trucks.com/forums/4...num-plugs.html
All worth a read imo, if you have a flex fuel 3.0L, with ping problems & are running the 22PP plugs, maybe lowering the heat range to 12PP plugs would do the trick as it semed to do for Bob.
Just some ideas to ponder.
Here is the tread https://www.ford-trucks.com/forums/1...fv-owners.html
Here is a thread with a link to pictures of Bobs AGSF-12PP plugs, with 50K miles on them. in case your wondering if they were too cold a plug for him to use in his FFV 3.0L https://www.ford-trucks.com/forums/4...num-plugs.html
All worth a read imo, if you have a flex fuel 3.0L, with ping problems & are running the 22PP plugs, maybe lowering the heat range to 12PP plugs would do the trick as it semed to do for Bob.
Just some ideas to ponder.
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Joined: Jul 2005
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Well when I get a change to clean up my EGR better.. I'll let you guys know.
As far as the spark plugs, I do recall reading that thread some time back... I'll probably try that next time I change them.
As far as the spark plugs, I do recall reading that thread some time back... I'll probably try that next time I change them.
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