I need some pointers on where to go now! I have a 91 with the stock ka24de and can’t seem to get it running properly! It’s having a misfire after the engine is warm and rpm’s settles down! Brand new plugs gapped at the recommendation of the engine but it has an msd 2 coil and magnacore r-100 wires plus a higher amp battery than the original recommended one !! I don’t know if anything of those things would have something to do with the problem ! A couple of order things ! The coil has no resistor added to it , no egr, the only thing i have not changed or check it’s the o2 sensor. The injections are good change the bad one 2 days ago

If anyone has an idea of what i should do please i need you knowledge and experience with this anointing issue !

I'm suspecting a bad coil.

Check for spark at each plug.

Also, do you have a CEL? If so, an OBD scanner will save you lots of head-scratching and guesswork.

AZhitman wrote: ↑

Fri Dec 06, 2019 9:55 am

I'm suspecting a bad coil.

Check for spark at each plug.

Also, do you have a CEL? If so, an OBD scanner will save you lots of head-scratching and guesswork.

i do have an obd 1 i believe it’s called and a obd 2 i will get it hooked up to it and see what it come out with

When does it misfire? At idle? Cruise? Wide open throttle?

When you say knocking, is it all the time, and is I rhythmic? Or only randomly under load?

It does when the rpm, settles down after cranking it up ! Before it’s drove! And on open throttle! After it’s gets drove around a few blocks or a good distance it doesn’t do it again till it’s parked cool completely out !

OK, earlier you said it happens when warm, but now you say it's only when engine is cool.

Let's get a scanner on it. Is the check engine light on?

Yeah at the first crank and warms up with out moving it at all after i drive it around ut stop doing it and for it to do it again it beif i park it and leave it till next day then will do it as long as i don’t move it at all ones i drive it for a few blocks it runs fine

So how can i tell if the coil is bad? It’s any specific voltage that should be putting out??

I feel like we're not communicating very well.

Is the check engine light on?

Have you put a scanner on it yet?

Ok i follow the suspicion of being the coil like you guys said so i picked up a new one and problem solved!!! And yes the check engine is on but it comes out as the egr but since i have an egr delete kit on it i didn’t put much attention to it since i know there’s no egr on the car !!

Thank you all for you help on getting it running as it should!! I don’t know much about the fundamentals of the electronics but today i learned a lot thank you all again for the helpful tips !!!!