problem with 90 deville

[jrod87]

I have aproblem with my 90 deville, it has a missfire and lacks power. I've changed plugs wires etc, changed fuel filter too, not getting any codes. Can anyone help

[maxwedge]

Misfire when, at idle, need more info here?

[jrod87]

it misses at idle and clears at higher speeds. it takes a while to get to speed. The car hesitates when taking off. I was driving up a hill and was losing speed with the pedal all the way to the floor and when I first got the car I took the hill like nothing.

[maxwedge]

Try and isolate which cylinder has the misfire, if this is port injection disconnect one injector at a time and see if you can feel the cylinder that does not change the idle roughness, then check that plug and or wire. If all ok could be a bad injector, but additional diagnosis must be done.

[jrod87]

Thanks for the help will try this