I keep getting a misfire on cylinder1 and i have changed the plugs wires cap and rotor and even the fuel injector. this problem comes and goes if you step on the gas hard to get out in traffic or whatever it will usually cause it to develop the misfire.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
misfires are from mechanical faults ( loose valve seat insert, problem hydraulic tappets 0 injectors -- wiring,injector tips , low fuel pressure ECM to electronic problems , plug, HT lead distributor cap (if no multi coils) rotor button, coils and ignition control module
run the fault codes to get closer to the fault
If you not running the OEM cap and rotor that's where your problem may be. The after market cap and rotor is not as heavy as the OEM and when the two screws that hold down the cap to the distributor is torqued to high,it warps the cap and that's where your problem may be. Remove the cap and inspect the inside and look for abnormal arching, you may want to replace the cap and rotor again. The other thing to is the breather screen in the distributor is known to get plugged up with dirty creating condensation which promote corrosion in the distributor there was a service bulletin from GM to service the screen when working on the distributor or during tune up's. Good luck and hope this helps. Keep me posted, be glad to help.