mifiring after a drive

[jj2gdsm]

I need help my car misfires but only after a drive it and i shut it off come back and misfires. What could cause this i changed the spark plugs gaped then to .28 the wires are about 3 months old, coolant temp sensor is a few months old.

 

[Backinajiffy12]

Do some searching. Have you checked your ECU, injectors, what did your old plugs look like?

 

[jj2gdsm]

the plugs look normal,how would i check my ecu?

 

[Backinajiffy12]

Boost leak test, vac test.

Test your injectors: turn your car on let it idle and take the injector cap off 1 by 1 and see if you notice a change. If not that injector is most likly bad.

As far at the ECU goes take it out, open it up and search for any signs of corrosion or broken caps.