With my GM Stage 2 and Rebel 3" intake, I can see on my Interceptor gauge that I get often some misfires. This happen most of the time when Im at idle, sometimes when I accelerate and strangely, almost never when I go wide open throttle. However, I don't get a cel because of that... so I can presume that this is normal? Should I replace my spark plugs? Why am I getting all those misfires?

 

did you swap PCM's? If you did (which I'm betting something like this) you will need a CASE relearn.

 

No, not at all, because this is the stage 2 from GM. So the dealer did all the installation.

 

Bump bc i have the exact same problem.

 

could be bad plugs or a bad coil pack

 

not to thread jack, but i just put new bkr7e in yesterday. before i was gettin as high as 26 misfires, and one night i hit 46. since the new ones went in, im seein anywhere from 4 to like 14ish. again sorry to thread jack, i hope both of us get some help.

 

hell....I'm stock and get alot misfires...I've just been too lazy lately to check my plugs..

 

Oh I see that any of you get more misfires than me... but what I mean by a lot of misfires is that I get them often, but in a low quantity, like 2 to 4 misfires each time. Maybe this is normal? I would like some experienced users to clear this up if possible! This may be something to not worry at if this is something like me.

Those who get up really more misfires in this post, do you get a check engine light?

 

nope, no cel. ill get 2 or 4 pretty often like at idle, while driving when i shift, i might get like 8, and a hard pull ill get like in the teens somewhere.

 

Pretty much like me, except I never have any or I should say very rarely when I do some hard pulls

 

actually now that im thinkin hard about it, i dont get hardley, if any durin a hard pull. usually the most i see like when i see a 16 or somehtihn is just normal driving. its so completely random. then a 2 or 4 at idel.

 

no cels...most get misfires at idle or occasionally just crusin.

 

exactly the same here....

 

same here..drives me nuts...i would really like to know what the problem is haha

 

I would recommend trying a different spark plug maybe? With my car there was a recall with faulty spark plugs that would cause serious misfires and load misfires.

Just a thought. Might not be the solution.

 

I'm thinking it may be normal. My interceptor sees a lot of misfires at idle too. Burn, if you had 46 misfires and a P0300 code didn't get set, I'm thinking you're okay.

 

Are you seeing any other codes?