On my 90 civic i have an issue to settle. When i start the car it runs good. When the temp of the engine increases then it doesnt idle right. I can see the rpm surgin. Also If i hold down the accelerator the ingine doesnt idle properly. The Rpms never stay steady.

Im thinkin either a vacuum leak or improperly gapped plugs.
wut do u think?

Also the check engine light came on.but i noticed when the check engine light was on.it didnt have that^^surging problem... I Didnt think to check my led on my ecu till afterwards..but the light hasnt came bak on as yet...