I'm a newbie here just needed some help with my 97 accord 2.7L.
Here is my symptoms; code reader is reading misfire on all cylinders. Car starts up fine but idles a little high and the tach jumps all over the place. When I push the throttle from under the hood it's smooth but when I press the pedal it stumbles really bad to where it's not drivable. My exhaust gets really hot to where its smoking and white smoke from the muffler. Car has a brand new cat, coil and spark plugs. Any help is greatly appreciated.

 

white smoke is indicative of a bad cylinder head gasket...would also account for your P0300 random misfire code(s) pull the plugs and crank the engine over to see if you have coolant shooting out. also do an compression test to find which bank has the bad gasket.

 

Thanks got a code reader on it today only read p0122 tps low voltage