Mechanics

I GOT A ENGINE LIGHT, P0303 - #3 CYN MISFIRE

2002 Dodge Dakota • 170,000 miles

I have don't nothing yet just used my obdII scanner to get the code. Can it be spark plug, rotor and cap? I don't have compress gage and other compress gages.
Avatar
Ao7777
July 31, 2012.




Start with a compression test. It sould be that, plug, coil, vacuum leak or injector. This is why you need a real diag before throwing parts at it.

Roy

ASEMaster6371
Jul 31, 2012.
Do I need a compression Tester and which cyn hole? #3? How do I do a compression test?

Tiny
Ao7777
Jul 31, 2012.
Remove the plug. Unplug all coils. Crank engine with tester installed and read the readings for us

Roy
AD

ASEMaster6371
Jul 31, 2012.

AD