Thread: IR heat sensor reveals one cylinder is lean

must be it.. he didn't think an injector would go bad.. i don't know why..

i didn't find the time to pull the plugs today, i slept until 2:30, had to work at 3:00

You also have to consider your header gasket leaking.

New header gasket installed on my SSAC when it was put in back in June...

I got one of the IR temp sensors, was about $40 at Lowes. I haven't tried it on the car yet, sounds like it works though .

I wouldn't say spark plugs are bandaid fixes, patching an exhaust leak with bondo is . If the gap is wrong then that would cause a rich/lean situation.

Definitely pop out the injector and see if it's bad, maybe switch it with another cylinder's injector.

a LARGER spark plug, in just ONE cylinder - not a bandaid fix??

What do you mean by a larger spark plug? Last time I checked they were all the same size

is it me or #2 always run lean. when ever i crack a piston ring its usually #2

They will only give you an accurate temperature if you adjust the emissivity setting to correspond to the material of what you are measuring on. Not really a problem most of the time, but something to remember.

250 (C)?? Seems low for a header temperature, and that's likely the reason. But in any case, the scaling alone is at least telling you that the single cylinder is at a significantly larger temperature than the others.

Whenever I've bought plugs for any car, I've always got what the dealer recommended, except this last time I bought copper NGK's instead of platinum...

so I neve have even thought of "different sizes" until he suggested this. Perhaps he meant "more gap"??

sup, fix it yet?