Hello everyone sorry if im posting this in the wrong forums im new to the site just have a really confusing misfire in my Civic and gonna explin and see if you guys could help, my CEL flashes everytime i start my car cleared codes numerous upon numerous times heres everything ive replaced with new parts distributor, spark plugs (NGK), spark plug wires, fuel injectors, air filter, and also intake manifold gasket but im still having misfire car shakes really rough when stopped and even stalles from time to time and also when it wants to stall my oil light flickers as if car is going to stall and accessory lights are trying to come on any help would be appreciated if i missed any details let me know ill add them

 

Bump for help? Today my car started to overheat and all coolant is going to expansion thing but not going back to radiator

 

Also 2 new codes today so a total of 5 I got P0303, P0302, P0301, P0300, and P1399

 

Start with a compression test to verify that the engine has mechanical integrity.

If that is OK then go to a power drop test where you disconnect the fuel injectors one at a time to see which cylinder is not working.

 

Ok thx ive been thinking about doing compression test but unsure since ill have to talk to my dad but i guess thats next as for injectors ive done that once when i first started having this problem and it seemed like there wasnt much difference when i pulled the cylinder 3 injector but i just thought injector was bad so bought new ones but ill also do that again thx for suggestions

 

Quit buying parts! Test things first.

 

Lol i figured it would be better buying some new parts anyways last owners didnt take car of the car

 

Injectors usually last the life of the car. They're not a wear item, don't replace unless known to be broken.

 

Yeah see i didnt realize that �� wasted $50

 

It sounds like you have a random misfire affecting all the cylinders... I agree check the compression first to rule that out; but this does sound like a problem with ignition.

You took several good troubleshooting steps-- plugs, wires, injectors -- you're on the right track but it sounds like the problem still exists. You didn't say whether you checked the ignition coil. Does your RPM gauge go wacky when it decides to run rough and stall? It runs off the ignition coil.

I have a 98 Civic D16Y8 engine that I was chasing a random misfire for a long time on and finally it wound up being the ignition coil. That's inside the distributor.

Let me know if you need pertinent pages from the service book. Tell me what engine you have to be sure.

 

I dont think its the distributor since i just bought a new one but its a possibility but a friend of mine said it sounded like it could be ignition solinoid do you guys think thats a possibility? Ive never checked it before

 

OP what engine you got?

 

Unsure i know its original engine i think D16Y7 as far as i know

 

Look for engine stamp code.

 

Open the hood and check to see if there's a cow under there. If so, yes you have the D16Y7.