[Lvbudlight]

I have a 1990 honda civic dx 1.5 lost all power all at once. Doesn't really want to go up hills. Changed fuel,air,spark plugs and oil filters. Idles sometimes seems a little off. When in third sometimes doesn't seem like the proper rpms when going over speed for that gear.

[cdad]

Have you had your exhaust checked out? Plugged catalytic converter can caus the problem your having or and exhaust restriction.

[Lvbudlight]

No not yet that is what I was going to do next. It does smoke a little at times so I was going to take off the catalytic converter and pound a strait pipe through it to see if it changed anything.