right when the car is hot and i drive in say 4th or any gear at 2000rpm put my foot down it misses only once then its ok. but its ok if im driving fast and above 2000rpm .
ive changed the spark plugs the ht leads are ok .ive reset my ecu aswell .and i tryed my m8s injectors to see if one was ****** up.what could it be .
thanks

 

cap/rotor, wires, plugs, injectors, vavles, bad tune, tps, 02 sensor, coil, wiring, ecm.............. shall I go on?

 

what are the signs of bad valves? this past week i installed a alarm and took my car for a drive and everything was cool. lately though the car seems to have a slight vacume leak. car is reading low vac on the gauge and starts up slow. gauge reads about 12-17 vac lately on warmup. then around 20-22 when warm. kinda weird. well i let my car sit overnight and go to start it up the next day and doesnt want to idle sounds like its missing and stuff. and vacume is below ten unless i give it some gas to keep it running. seems to run allitle rought when i drove it around the block but it still ran good and had power. im going to take it to a shop to do a smoke test to see if its a vacumme leak. never head bad valve seals is there by any chance this is what it could be? getting alittle worried its more then just a vacumme leak. im almost definate its nothing with the engine but just weird. i tripple checked everything redid most of the vacumme lines and checked it all. after it started acting up i put my installed my catchcan i made too hoping that was going to help some. nothing. could just a tb gasket or sensor gasket leak that much? any ideas can help. i have tried everything i can think of.

 

hope someone has an answer cuz my girls car is doing the same thing. its sputters under 2k and then stops.

 

i replaced my plugs and wires and it fixed it

 

done that . m8 said could it be the t bodycos i put a new gasket on the other week .
no it dint start doing it after i put that on.

 

low battery, bad voltage regulator or alt?