[Blood]

my 99 integra ls has been running horribly and we started pulling the wires and when we remove the wire from the 3rd cylinder the car idles perfect can anyone tell me what’s going on

 

[B18C1Joe]

Check the plug compared to the other cylinders. It could be a leaky injector or something effecting the heat range of the plug like carbon buildup or cracked porcelain, plug gap being off. Hopefully it's something simple like that. There's a lot of things that can effect one cylinder though. Might have to do a compression check.

 

[drcheap]

I would try swapping the plugs of the suspect & another cylinder to see if the problem follows the plug or not -- worth the couple minutes it takes to try it at least.

 

[99 GSR]

Are Integras notably weak on cylinder 3?
I have a 99 GSR, 177k miles with headaches on cyl 3.
Burned valve to begin with, now plug fouls on cyl 3 after about 4k miles

 

[B18C1Joe]

Are Integras notably weak on cylinder 3?
I have a 99 GSR, 177k miles with headaches on cyl 3.
Burned valve to begin with, now plug fouls on cyl 3 after about 4k miles

Could it be a bad injector? Running lean or rich can burn the exhaust valve. A leaking injector could burn the valve. Could also foul the plug.

 

[99 GSR]

It's an intake valve that burned.
Im afraid the plug fouling comes from a bad wiper ring.....?
I've been told Hondas have poor wiper rings and oil consumption is normal after about 150k miles.
Uses abt 3/4-1 qt per 1000 miles
But why are all issues on cylinder 3.
All other cylinders look like they should....nice even burn on plugs.

 

[JustinKlemgold]

Are Integras notably weak on cylinder 3?
I have a 99 GSR, 177k miles with headaches on cyl 3.
Burned valve to begin with, now plug fouls on cyl 3 after about 4k miles

Cylinder 3 runs the hottest and is the most likely to have issues.

 

[99 GSR]

Ok...thanks