Assistance needed: Ignition related(?)stutter b18C Turbo
09-02-2016, 04:26 AM
#1
Honda-Tech Member
Thread Starter
Assistance needed: Ignition related(?)stutter b18C Turbo 19.12.16
Video in page 2 (19.12.16)
Hello you guys,
i have a problem for the last 6 months that we can't figure out. i wrote the car is stuttering but i dont know if that is the correct word.
it seems that the car is running fine at low RPM, but a good ear can hear it sounds like it misfiring a little bit (let say from 1-10? the miss is feels like 1)
at high rpm not changing also sounds like a little misfire.
i can really hear it when the car is engaging VTEC. because the vtec has a different sound fom the exhaust i can hear it much better.
and of course i can fill a lake of power...
**the problem comes and goes**
I can drive sometimes and the car on good. but most of the time it's bad.
what i tried so far:
replace to OEM distributor (msd was unplugged complitlly ! include wires)
cleaned injectors
checked aem map and retuned with different fuels
replaced aem ems
i tried all kind of things i cant remember..
the only thing i did that did helped for a while was tuning the valves (was 2 valves that needed a very small adjustment)
and rewire my audio amp
car is 98 ek, b18c4 fully built engine, b18c fully built head (stock gsr cams)
turbo
msd pro billet distributor
msd spark wires
msd cdi (6a i think)
msd external coil
AEM EMS S1
aem fuel pump
1000cc precision injectors
etc..
I searched... really i did. in my case it does not matter if its cold or warmed engine (now if i think about it maybe when its cold its worse when vtec comes on)
does anyone had the same issue?
somone can direct me to a solution ?
thx
Hello you guys,
i have a problem for the last 6 months that we can't figure out. i wrote the car is stuttering but i dont know if that is the correct word.
it seems that the car is running fine at low RPM, but a good ear can hear it sounds like it misfiring a little bit (let say from 1-10? the miss is feels like 1)
at high rpm not changing also sounds like a little misfire.
i can really hear it when the car is engaging VTEC. because the vtec has a different sound fom the exhaust i can hear it much better.
and of course i can fill a lake of power...
**the problem comes and goes**
I can drive sometimes and the car on good. but most of the time it's bad.
what i tried so far:
replace to OEM distributor (msd was unplugged complitlly ! include wires)
cleaned injectors
checked aem map and retuned with different fuels
replaced aem ems
i tried all kind of things i cant remember..
the only thing i did that did helped for a while was tuning the valves (was 2 valves that needed a very small adjustment)
and rewire my audio amp
car is 98 ek, b18c4 fully built engine, b18c fully built head (stock gsr cams)
turbo
msd pro billet distributor
msd spark wires
msd cdi (6a i think)
msd external coil
AEM EMS S1
aem fuel pump
1000cc precision injectors
etc..
I searched... really i did. in my case it does not matter if its cold or warmed engine (now if i think about it maybe when its cold its worse when vtec comes on)
does anyone had the same issue?
somone can direct me to a solution ?
thx
Last edited by m0sad; 12-19-2016 at 12:46 PM.
09-02-2016, 11:42 AM
#2
Honda-Tech Member
re: Assistance needed: Ignition related(?)stutter b18C Turbo
Try it with MSD removed, with NGK blue spark plug wires, and some fresh plugs
MSD 6A is known to cause all kinds of issues
or if you really want a aftermarket ignition, upgrade the box and coil theres some info on here I have it saved somewhere if you cant find it yourself
what HP lvl are you at? OEM ignition works just fine for anything under 500hp or so
MSD 6A is known to cause all kinds of issues
or if you really want a aftermarket ignition, upgrade the box and coil theres some info on here I have it saved somewhere if you cant find it yourself
what HP lvl are you at? OEM ignition works just fine for anything under 500hp or so
09-04-2016, 05:16 AM
#3
Honda-Tech Member
Join Date: Feb 2003
Location: schooling kids in ny, usa
Posts: 9,813
Likes: 0
Received 9 Likes
on
9 Posts
re: Assistance needed: Ignition related(?)stutter b18C Turbo
Im in agreement on that. you have to gap down the plugs pretty good when you get up there in hp though. my motor seems to like no more than .020" gap.
what plugs are you using? if you are at 400+ hp on 93 octane i would probably encourage you to run 8 heat range.
what plugs are you using? if you are at 400+ hp on 93 octane i would probably encourage you to run 8 heat range.
09-04-2016, 01:14 PM
#4
re: Assistance needed: Ignition related(?)stutter b18C Turbo
Sounds to me like the MSD 6A is causing an issue. go back to stock for now, then if it seems to get a little better, go for the Mallory/Summit digital ignition and external coil and not the MSD 6A (Analog) stuff.
You need enhanced spark distribution not a pure substitute.
09-05-2016, 01:21 AM
#5
Honda-Tech Member
re: Assistance needed: Ignition related(?)stutter b18C Turbo
Actually my first tune was was the standard bkr7e, my new tuner wanted me to use NGK-4554 which is a non resistor 8 heat range plug. (perhaps he was thinking of going for higher HP, but had boost controller/WG spring issues past about 15 PSI). I trust my new tuner tho havent had any issues at all
I was gapping .028 to .030 on the 7e's and I beleive My tuner told my to go .025 on the 4554's. Both plugs worked just fine for me. This is on OEM ignition with NGK blue wires, brand new OEM cap,rotor, and coil
I havent noticed any difference between the 2 different types of plugs. both tunes landed me at just over 400, believe im at 408. much happier with my new tuner he basically cleaned up the fuel and timing curves so that everything is nice and smooth he definetly knows what hes doing unlike the first guy
I was gapping .028 to .030 on the 7e's and I beleive My tuner told my to go .025 on the 4554's. Both plugs worked just fine for me. This is on OEM ignition with NGK blue wires, brand new OEM cap,rotor, and coil
I havent noticed any difference between the 2 different types of plugs. both tunes landed me at just over 400, believe im at 408. much happier with my new tuner he basically cleaned up the fuel and timing curves so that everything is nice and smooth he definetly knows what hes doing unlike the first guy
10-17-2016, 10:36 PM
#7
Honda-Tech Member
Thread Starter
re: Assistance needed: Ignition related(?)stutter b18C Turbo
hey you guys, been caught up in work..
anyway, as it says in my original post, i already disconnected my MSD system and plugged in an OEM dizzy. did not helped.
I did find out that apparently the stutter is only happening when vtec is engaging.
i set it up to engauge from 80% throttle (at 5500rpm)
so when im not at WOT, i do not hear the stutter...
please, someone had to have this problem before..
anyway, as it says in my original post, i already disconnected my MSD system and plugged in an OEM dizzy. did not helped.
I did find out that apparently the stutter is only happening when vtec is engaging.
i set it up to engauge from 80% throttle (at 5500rpm)
so when im not at WOT, i do not hear the stutter...
please, someone had to have this problem before..
Trending Topics
10-17-2016, 11:27 PM
#9
Honda-Tech Member
Thread Starter
re: Assistance needed: Ignition related(?)stutter b18C Turbo
i use BKR7's.. gapped at 0.25
im on 17-19 psi.
i cant see that it's the gap because the problem comes and goes..
maybe im mistaking..
im on 17-19 psi.
i cant see that it's the gap because the problem comes and goes..
maybe im mistaking..
10-17-2016, 11:43 PM
#10
Honda-Tech Member
re: Assistance needed: Ignition related(?)stutter b18C Turbo
just wanted to make sure. that spark plug and gap should work fine.
are you monitoring AFR? what does it look like when you get the stutter
are you monitoring AFR? what does it look like when you get the stutter
10-18-2016, 12:17 AM
#11
Honda-Tech Member
Thread Starter
re: Assistance needed: Ignition related(?)stutter b18C Turbo
the afr (wideband) is not showing anything.
im tuned to 11.2-11.5 and that is what i see in the gauge like everything is fine.
im tuned to 11.2-11.5 and that is what i see in the gauge like everything is fine.
10-18-2016, 09:12 PM
#13
Honda-Tech Member
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
are you able to do a data log? you may be missing something if relying on viewing the afr gauge manually. you say its only after vtec but this is also most likely when your car is building boost, sounds like a spark or fuel issue obviously
have you checked to see if your tuner can look at this? have you done a compression check?any cel codes?
have you checked to see if your tuner can look at this? have you done a compression check?any cel codes?
10-18-2016, 10:11 PM
#14
Honda-Tech Member
Thread Starter
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
compression is good.
CEL i did not checked yet.. im with AEM EMS.
if i will plug an OEM p28-p30 does the CEL WORK?
my tuner did not succeed with the data logging.
i will try it in the weekend.
CEL i did not checked yet.. im with AEM EMS.
if i will plug an OEM p28-p30 does the CEL WORK?
my tuner did not succeed with the data logging.
i will try it in the weekend.
10-18-2016, 11:43 PM
#15
Honda-Tech Member
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
sorry forgot your on AEM. not familiar with aem however it should store some type of trouble codes within the software if nothing else
My wideband has an input wire that goes to EMS...well actually 2. My tuner had trouble with hooking it up but i figured it out on my own, It needed both input wires one of which was a ground.
lookup the aem manual it should have some inputs for wideband sensor.
if you plugged in a p28 it would only get codes after using that ECU to run the vehicle which i definitely do not recommend doing (it woulddnt even start the car due to injector size anyway)
My wideband has an input wire that goes to EMS...well actually 2. My tuner had trouble with hooking it up but i figured it out on my own, It needed both input wires one of which was a ground.
lookup the aem manual it should have some inputs for wideband sensor.
if you plugged in a p28 it would only get codes after using that ECU to run the vehicle which i definitely do not recommend doing (it woulddnt even start the car due to injector size anyway)
10-19-2016, 12:37 AM
#18
Honda-Tech Member
Thread Starter
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
10-19-2016, 08:44 AM
#19
Honda-Tech Member
Join Date: May 2004
Location: Boston, MA, US
Posts: 309
Likes: 0
Received 0 Likes
on
0 Posts
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
Just Went through a similar problem. I did three things all at once and cured the problem. I cleaned all grounds with wire brush and chased ground threads, tightened by alternator belt that was squeeling when cold, and replaced #1 oxygen sensor.
It fixed the falling on its face as soon as it went into vtec problem.
It fixed the falling on its face as soon as it went into vtec problem.
10-19-2016, 12:41 PM
#20
Honda-Tech Member
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
Just Went through a similar problem. I did three things all at once and cured the problem. I cleaned all grounds with wire brush and chased ground threads, tightened by alternator belt that was squeeling when cold, and replaced #1 oxygen sensor.
It fixed the falling on its face as soon as it went into vtec problem.
It fixed the falling on its face as soon as it went into vtec problem.
10-19-2016, 10:31 PM
#21
Honda-Tech Member
Thread Starter
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
anyway, logging is not an option, it seems that it's not working correctly. V1 AEM.
i will go over all of my grounds!
please ppl, any suggestions will be acceptable.
i'm really on a jam here
10-19-2016, 10:55 PM
#23
Honda-Tech Member
Thread Starter
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
10-20-2016, 07:25 AM
#24
Honda-Tech Member
Join Date: May 2008
Location: Southern Oregon
Posts: 1,892
Likes: 0
Received 0 Likes
on
0 Posts
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
I use the factory o2 for closed loop feed back. Although I set the target voltage to target ~15.2 afr instead of 14.7 and I get 27mpg mixed in town driving and ripping on it consistently lol
10-20-2016, 11:35 AM
#25
Honda-Tech Member
Re: Assistance needed: Ignition related(?)stutter b18C Turbo
pretty sure that is the case, I do not have a factory 02 only a wideband. on my closed loop tab it reads "open loop (closed loop disabled)" .
In my location I dont get much weather fluctuation its between 80-86 degrees year round, although I was kinda running a bit rich at idle last time I drove I would be willing to try this if I knew what settings to used on the closed loop tab
In my location I dont get much weather fluctuation its between 80-86 degrees year round, although I was kinda running a bit rich at idle last time I drove I would be willing to try this if I knew what settings to used on the closed loop tab