RUSTED SPARK PLUGS! I know this is gonna hurt!
04-27-2006, 05:05 AM
#21
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That's not rust. Think about it for a second, how could water survive in an environment like a combustion chamber (ignition, fuel, extreme pressue)? If coolant was being introduced into the combustion chamber, the engine would be smoking and running really bad. Also, porcelean doesn't rust.
IMO, it looks like your engine may be running a little too cold and the A/F may be a little too rich. The rust/brown/tan color is actually good, but your plugs have a little too much color. Seeing that the motor is built, the number of causes are endless and the chances for something installed wrong/incorrectly have increased exponentially. The higher compression ratio is highly suspect. Did you reduce the plug gaps and go to a cooler plug when you built this motor? If not, you should do it.
IMO, it looks like your engine may be running a little too cold and the A/F may be a little too rich. The rust/brown/tan color is actually good, but your plugs have a little too much color. Seeing that the motor is built, the number of causes are endless and the chances for something installed wrong/incorrectly have increased exponentially. The higher compression ratio is highly suspect. Did you reduce the plug gaps and go to a cooler plug when you built this motor? If not, you should do it.
Last edited by Dave B; 04-27-2006 at 05:07 AM.
04-27-2006, 06:15 AM
#22
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Originally Posted by Dave B
That's not rust. Think about it for a second, how could water survive in an environment like a combustion chamber (ignition, fuel, extreme pressue)? If coolant was being introduced into the combustion chamber, the engine would be smoking and running really bad. Also, porcelean doesn't rust.
IMO, it looks like your engine may be running a little too cold and the A/F may be a little too rich. The rust/brown/tan color is actually good, but your plugs have a little too much color. Seeing that the motor is built, the number of causes are endless and the chances for something installed wrong/incorrectly have increased exponentially. The higher compression ratio is highly suspect. Did you reduce the plug gaps and go to a cooler plug when you built this motor? If not, you should do it.
IMO, it looks like your engine may be running a little too cold and the A/F may be a little too rich. The rust/brown/tan color is actually good, but your plugs have a little too much color. Seeing that the motor is built, the number of causes are endless and the chances for something installed wrong/incorrectly have increased exponentially. The higher compression ratio is highly suspect. Did you reduce the plug gaps and go to a cooler plug when you built this motor? If not, you should do it.
Originally Posted by Dave B
looks like your engine may be running a little too cold
Originally Posted by Dave B
Did you reduce the plug gaps and go to a cooler plug when you built this motor? If not, you should do it.
By the way, I used to live up your way. I went to the Kansas City, MO Police Academy when I got out of the Marine Corps for a year. Love the area, but hated civilian life so I am now back in the Corps down in Texas.
.
04-27-2006, 06:54 AM
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Did you run octane booster of any kind. While that is not a color I have seen often I know a guy out here who ran some kind of octane booster that was red and ended up with red looking plugs...
04-27-2006, 07:28 AM
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Mia, I think you just reminded me of something when you mentioned the color red.
When we picked up all the parts from the machine shop, they told us to add some tranny fluid to the oil we were lubing the parts with during the assembly. Maybe we went overbored or shouldn't have listened to them at all?
Now that I think about it, that makes total sense as we put a lot, and I mean a lot of oil (oil/tranny fluid mix) on the rings and other piston areas.
This would explain how it got in my combustion chamber. Then it burned and turned a reddish brown color and ended up on my plugs.
If this is indeed the case, I should be able to pull my new plugs tonite or tomorrow and there should be nothing on them at all. The rest of the fluid should have burned off well within that first 1200 miles.
Thanks guys! I hope that is it.
Now just tell me why my VDC and Slip light wont shut off and we'll be good to go.
When we picked up all the parts from the machine shop, they told us to add some tranny fluid to the oil we were lubing the parts with during the assembly. Maybe we went overbored or shouldn't have listened to them at all?
Now that I think about it, that makes total sense as we put a lot, and I mean a lot of oil (oil/tranny fluid mix) on the rings and other piston areas.
This would explain how it got in my combustion chamber. Then it burned and turned a reddish brown color and ended up on my plugs.
If this is indeed the case, I should be able to pull my new plugs tonite or tomorrow and there should be nothing on them at all. The rest of the fluid should have burned off well within that first 1200 miles.
Thanks guys! I hope that is it.
Now just tell me why my VDC and Slip light wont shut off and we'll be good to go.
04-27-2006, 07:46 AM
#26
Heres what you should do, replace the plugs, change your oil and drive it for 3k miles until your next oil change. It should go away but if it doesnt you definitely have something in your oil or fuel because you have good compression in most of your cylinders and #5 isnt too bad with 183. Make sure you dont put anything in your gas either. Run premium pump gas and give us an update later.
Also, check underneath your oil cap. If you find water condensation then your head gasket might be blown. You can also check your coolant for oil.
BTW I've never seen plugs in that sort of condition, you deserve a prize.
Also, check underneath your oil cap. If you find water condensation then your head gasket might be blown. You can also check your coolant for oil.
BTW I've never seen plugs in that sort of condition, you deserve a prize.
04-27-2006, 08:33 AM
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Originally Posted by done12many2
Mia, I think you just reminded me of something when you mentioned the color red.
When we picked up all the parts from the machine shop, they told us to add some tranny fluid to the oil we were lubing the parts with during the assembly. Maybe we went overbored or shouldn't have listened to them at all?
Now that I think about it, that makes total sense as we put a lot, and I mean a lot of oil (oil/tranny fluid mix) on the rings and other piston areas.
This would explain how it got in my combustion chamber. Then it burned and turned a reddish brown color and ended up on my plugs.
If this is indeed the case, I should be able to pull my new plugs tonite or tomorrow and there should be nothing on them at all. The rest of the fluid should have burned off well within that first 1200 miles.
Thanks guys! I hope that is it.
Now just tell me why my VDC and Slip light wont shut off and we'll be good to go.
When we picked up all the parts from the machine shop, they told us to add some tranny fluid to the oil we were lubing the parts with during the assembly. Maybe we went overbored or shouldn't have listened to them at all?
Now that I think about it, that makes total sense as we put a lot, and I mean a lot of oil (oil/tranny fluid mix) on the rings and other piston areas.
This would explain how it got in my combustion chamber. Then it burned and turned a reddish brown color and ended up on my plugs.
If this is indeed the case, I should be able to pull my new plugs tonite or tomorrow and there should be nothing on them at all. The rest of the fluid should have burned off well within that first 1200 miles.
Thanks guys! I hope that is it.
Now just tell me why my VDC and Slip light wont shut off and we'll be good to go.
04-27-2006, 08:38 AM
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Originally Posted by 97supratt
Heres what you should do, replace the plugs, change your oil and drive it for 3k miles until your next oil change. It should go away but if it doesnt you definitely have something in your oil or fuel because you have good compression in most of your cylinders and #5 isnt too bad with 183. Make sure you dont put anything in your gas either. Run premium pump gas and give us an update later.
Also, check underneath your oil cap. If you find water condensation then your head gasket might be blown. You can also check your coolant for oil.
BTW I've never seen plugs in that sort of condition, you deserve a prize.
Also, check underneath your oil cap. If you find water condensation then your head gasket might be blown. You can also check your coolant for oil.
BTW I've never seen plugs in that sort of condition, you deserve a prize.
04-27-2006, 11:38 AM
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I think the ATF could have definitley caused the color and soot on the plugs.
I recently moved to Atlanta, GA. It's not what I thought and the traffic is far worse than I had assumed. I will most likely move back to Kansas City within a year. The South is beautiful as is the weather, but there are just too many damn people here. You live and learn.
Originally Posted by done12many2
By the way, I used to live up your way. I went to the Kansas City, MO Police Academy when I got out of the Marine Corps for a year. Love the area, but hated civilian life so I am now back in the Corps down in Texas.
04-27-2006, 12:48 PM
#30
Yup I concur. That doesn't look like rust to me either. Well... it does kind of look like rust, but it's not. The more I thought about it the more I doubted the tips of your spark plugs could rust. I've never seen that happen before, and after looking at your pics, I still haven't. The tranny fluid could have a lot to do with the weird color, that and the combination of running colder plugs with a rich A:F is probably what fouled them.
If your A:F is ok now, and you have new plugs, you should be OK. I would get that thing tuned though.
If your A:F is ok now, and you have new plugs, you should be OK. I would get that thing tuned though.
04-28-2006, 08:50 AM
#33
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Originally Posted by 350Zteve
Man, that sure looks like octane booster. Octane 108 brand in particular gives your plugs a rusty color. You can rest easy though that its not rust (btw, porcelin doesn't rust)
11-10-2023, 06:24 PM
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Hey guys. I really apreciate all the suggestions that you are throwing out there!
Here are the pics. From left to right they are in cylinder number order. Cylinder 1 on left and cylinder 6 on right.
Besides the obvious discoloration, the only other thing I noticed was oil on the cylinder 1 plug.
I did a compression check while changing the plugs out and all cylinders were pretty much the same with the exception of cylinder 5.
Compression:
#1 - 210
#2 - 190
#3 - 192
#4 - 212
#5 - 183
#6 - 211
The motor had cooled down just a little prior to beginning the check. I only did it to check to see if anything was severly out of whack, so I wasn't concerned with trying to get a super accurate warm reading. My understanding is that warmer would have been higher.
I replaced these plugs with the new ones and the car is much smoother now and has much better throttle response.
Here are the pics. From left to right they are in cylinder number order. Cylinder 1 on left and cylinder 6 on right.
Besides the obvious discoloration, the only other thing I noticed was oil on the cylinder 1 plug.
I did a compression check while changing the plugs out and all cylinders were pretty much the same with the exception of cylinder 5.
Compression:
#1 - 210
#2 - 190
#3 - 192
#4 - 212
#5 - 183
#6 - 211
The motor had cooled down just a little prior to beginning the check. I only did it to check to see if anything was severly out of whack, so I wasn't concerned with trying to get a super accurate warm reading. My understanding is that warmer would have been higher.
I replaced these plugs with the new ones and the car is much smoother now and has much better throttle response.
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