The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

What happened to my plugs. please help!!!

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Got sh*ted on? Who cares, by new ones. They look as though they had gotten some fuel on them. Clean up the spark plug wells, then insert new ones. Are you running rich or having any misfire problems?
 
What do they look like to you? The pic is tough for me to tell for sure what I'm seeing. The only thing I see for certain is the ground strap on the 2nd one from the left. Looks like it's melted?

If that's the case, you need colder range plugs in the least. There appears to be some small evidence of extreme heat from either detonation or from running out of fuel and going lean. Doesn't appear that it's burning any oil or sustaining any physical contact with pistons.

Need some closer images where we can see the electrodes and insulators better.
 
it is melted and they are already bpr7es there a step colder then stock.

my car is bone stock other then intake and exhaust

acouple weeks ago i fixed a boost leak with out knowing and jumped to 21 psi on a pull could that of been the cause
 
Yes, over-boost is the most likely the cause. That is a melted plug. Do you have any fuel mods? If not I would put a new set of plugs in and is how it runs. Hopefully you didnt melt a valve also. If it runs bad still, do a compresion test that will tell you if you melted a valve.
 
I just did new plugs and wires today and it still idles like s**t, im scared to do a compression test LOL.


and my only exact mods are
3in turbo back exhaust
intake
turbo xs mbc
boost gauge
rfl bov recirculated

thats it.

oh and the free mods that were done before i bought the car, wich are

hacked maf
egr delete
vaccum line delete


my car idles really bad but still pulls REALLY hard
 
from the picture it tells me you are running lean. if you were running rich they would be black and have carbon deposits on them and not be anywhere near white or light colored!!! you have burn one from detonating it looks like!!! hope your piston cylinder and valves are ok!! the thing im thinking about is where did the metal go when it came off your plug??? was it melted and went out the exhaust or did it do damage to valves piston or rings and cylinder wall?? i not only would do a compression test but I would find someone with one of those niffty cyclinder cameras and check out what your cylinder walls and valves look like!!! good luck!! it doesnt look good to me though!!!
 
oh and the free mods that were done before i bought the car, wich are

hacked maf
egr delete
vaccum line delete


my car idles really bad but still pulls REALLY hard

I'll bet there's more damage than that plug.

Go check your base ignition timing with a timing light right now, and then get rid of the hacked MAF. I heavily suspect that detonation is causing the high temps, but I KNOW that the MAF is causing you to run lean. Frankly, I'm surprised the car is still running at all.
 
I did a compression test today

from left to right looking at the front of the engine
170 155 160 170

the 155 was the plug that melted

are those numbers good?

when i bout the car the kid said that the rings and pistons were changed at 160k the car has 200k now do you think he was telling the truth

thank you in advance for any help
 
are those numbers good?
Those numbers are just okay. 155 is 91% of 170, but you might be looking at a slightly burnt/warped valve or a small leak in the headgasket that won't show you a real difference on a compression test. When you burn the ground strap of a spark plug, you've gotten the cylinder very hot, hot enough to warp the head, burn a valve or melt a piston.

You should perform a leakdown test too.

At least keep an eye on the level in the coolant overflow bottle, you don't want to suck back air when cooled after it's pushed all the coolant out from running hot.

do you think he was telling the truth
Yes I do. A 20 year old 7.8:1 CR engine with 200k on it shouldn't show that high on a compression test. I imagine he might even have installed some 2G or 8.8:1 pistons.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top