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Spark plugs again

S

SVcummins

Well-known Member
Is it possible to run antifoulers on all plugs ?
cvphoto70473.jpg


cvphoto70474.jpg
 
Thanks old I probably don’t to all but probably 3 or there are a couple that burn perfectly with out the anti foulers
 
Case that plug is burning really good for the amount U use the truck. I would say if truck was run on long trips would not need any antifoulers and run warmer.
 
Is it burning oil? Is the thermostat in and working? Are you driving it enough to get it fully up to temperature?

From the looks of the plug I would take all of them off and see what it does.

Possibly the carb is running rich. It has an internal diaphragm power valve that is known for leaking, especially sitting with E10 in it.
 

OK, you got me. What are antifoulers used for? Not sure I've heard of them.
 
There a device that goes in where the spark plug goes and have a small hole in them so as to keep the spark area of the plug hotter then normal so as to help keep from fouling a plug
 
Years ago I ran a ford pickup that had a 460 engine and one by one added them until all eight cylinders had them.Ran ok until I spend the $$$ to replace the engine.Depending on how much oil is getting sucked into the cylinder will determine how long it will last.
 

Why not run the coolant at 195F , lean the mixture and run a heavier straight weight oil ? Most or all of the fouling problems will disappear .
 
I don’t think I can run a straight weight oil in the winter time
but I could check to see if the thermostat could go higher
temperature.
 
In the past, I have put gripping umbrella seals on both intake and exhaust valves, and stopped a lot of oil fouling. They have a coil spring that makes them stay in place on the guide.
 
Old, that was in the good old days. Lol

Now a day's they serve a completely different purpose. They are used in the exhaust. Take out the 02 sensor, screw in the adapter and then screw the 02 sensor into it. It tricks the computer into thinking the catalytic converter is still good. Expensive now too.
 
Package I had said to not run in all cylinders. I did it anyhow. It would not start ! Had to pull some back out and only ran them on the worst cyls. all you can do is try it.
 
If that truck is running a Quadujet its probably well past the age where the float starts taking on fuel and gradually enriching the mixture. Also go to a hotter thermostat.
 
I have an old 1950's towmotor forklift with a flat head continental engine in it. It has always burned oil really bad in the 15 years Ive owned it but I just am never going to get around to rebuilding the engine I guess. I use it a lot too. It really fogs up the whole yard. Keeps the mosquito population at bay!
Anyways I used to put the cheapest oil in it I could find as it consumed it so fast, but it would foul plugs constantly and I would have to change or clean them. I tried the device your talking about and it did help some but still fouled plugs badly.
Then I got the bright idea to pour the old oil I drained out of my truck when I changed it, which was used Amsoil 15W-40 synthetic. Been doing that now for over 10 years. It still burns the oil but the plug fouling has all but disappeared and I removed the anti fouling devises years ago. I maybe clean the plugs once every couple years now instead of every few days and it still starts and runs fine. Just gotta drive into the wind so you can see through the smoke. Just thought that was interesting is all.
 
The anti-foulers brings back the time I was at a AC dealer in the 70's in Nebraska, they had a WD-45 i think it was reversed with a loader on it for their yard tractor,, as we were walking by to look at something on the back lot i looked at it and seen they had used baling wire to extend the plug wire ends out about 3/8" I think it was from the plug,, the owner seen me looking at it and said the engine had been dusted when he traded for it and it fouled a plug or two every day, so he added the extensions to make the spark Hotter,, said he had not fouled a plug in 20 years since doing it,, funny how a pic will trigger memories, i have used that many times when I ran across a fouled plug when its running and it sure enough makes most of them start firing again by doing it,, I do not make the extender just do it to make sure its just a fouled plug and just hold it by hand away for a bit
 
Try using something on the plug or in the wire end to create a gap between the wire and plug. That will allow the spark to reach fulll voltage before leaking off due to the fouling.


On some wires they can be pulled back so that there is a gap but the boot still holds them in place
 

I tried it. When the engine is so far gone that it's that bad, nothing really "fixes" it short of some engine work.
 

Well this begs another question. Seems like adding antifoulers would also increase the size of the combustion area just a little bit which would then reduce compression in a cylinder that already has low compression?
 
How much blow by does it have. If it's that gmc with the small block new valve seals might help. The drains at the ends of the heads may also be plugged with sludge. Do the rear plugs foul first? Some ford umbrella seals will fit inside the springs. I have used them with the stock o ring type also. Make sure pcv system is working and engine is reaching full temp. Splicing a large shirt button in a solid core plug wire will reduce fouling also. I have never had anti foulers on all plugs at once but would probably be ok.
 
The plug I posted with the fouler has been in the engine five
years . This is what the plug next to it looks like in the same 5
years
cvphoto70573.png
 
Spark plugs have heat ranges. Maybe you're using a spark plug that, for your application, is too cold?? Causing the engine to run hotter might also fix the problem. A too rich mixture will introduce more cold fuel/air mix thereby causing spark plug temperature to be too low. These are all guesses but I do know that on our old WC Allis Chalmers the spark plugs would foul when doing light work such as pulling a wagon but doing heavy work, such as pulling a plow, that would never happen. Dealer, who was a first-rate mechanic said to run engine hotter by putting cardboard in front of radiator. Even on hot summer days. That was hard to swallow. But, it seemed to help. Tractor did not have a temp gauge.
 
Is it a good or bad idea to use the one plugs I’ve got that are one step hotter than the original plugs the engine calls for ?
cvphoto70588.jpg
 
Got the non foulers installed today the new set of plugs I put in about 500 miles ago already fouled out except the ones that had the extensions they looked good still . I’m changing to mystic 15 50 engine oil I had an engine in a big ford that was burning a gallon of oil a day and the mystic all but stopped it using any oil . Next thing I need to check the thermostat and see what it is for temperature . Now with the anti foulers I get a backfire when I let off the gas
 
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