Misfire(little different the norm)

[shenanigans]

alright guys, I was noticing an occasional stutter/misfire.

So yesterday i change fuel filter, seafoam, and did the starter. Car fires faster, almost instantly(could be starter related) And it idles a little smoother and definitely drives faster.

But know when I say I am in 3rd gear, at 2500 rpms, and I get on the gas hard, it will stutter and misire hard but once in upper rpms fire perfectly fine.


BUT I also have 4* of timing added across the board on my timing table. I have had this for months, checked it and its alwasy been fine. My question is do you think the seafoaming and the fuel filter would have changed something so I woudl have developed detonation?

[vanbibber]

Re: Misfire(little different the norm)

have you checked the o2s out? if its clearing up in upper rpms it may be those. thats what id check first.

[Simzjr12]

Re: Misfire(little different the norm)

alright guys, I was noticing an occasional stutter/misfire.

So yesterday i change fuel filter, seafoam, and did the starter. Car fires faster, almost instantly(could be starter related) And it idles a little smoother and definitely drives faster.

But know when I say I am in 3rd gear, at 2500 rpms, and I get on the gas hard, it will stutter and misire hard but once in upper rpms fire perfectly fine.


BUT I also have 4* of timing added across the board on my timing table. I have had this for months, checked it and its alwasy been fine. My question is do you think the seafoaming and the fuel filter would have changed something so I woudl have developed detonation?

let me know how it turns out...i have the exact same problem as you...i have currently changed the o2 sensors and blocked the egr... still have the problem.....next im going to look at the map sensor

[shenanigans]

Re: Misfire(little different the norm)

I tink my issue might have been gas... off hand does water float on gas, or the other way around? I put a new take of gas in and it seems to be running stronger.


btw my EGR does leak too...

[slow6]

Re: Misfire(little different the norm)

usually some fuel system treatments say that they dissolve water or "displace" water

[bah]

Re: Misfire(little different the norm)

I tink my issue might have been gas... off hand does water float on gas, or the other way around?

go spill some gas on a lake, it floats, so all your water would be at the bottom getting sucked into your supply :) fun stuff