If you remember, I was complaining about this nasty little case of stumbling while driving under partial throttle latley, and it just dawned on me tonight, roughly the same time this started happenin (about a week or so) I installed a new set of plugs and wires.

I'm usuing stock wires, and I decided to run an extra step colder plug (BCPR7E-11). So, could it be the plugs are too cold for my setup? I read of somebody's earlier account that with a 7 series plug they had rough starting and driving while cold, so I'm thinking 'perhaps' this may be what's going on since the recent drivability problems seem to coincide with my switching plugs. UNfortunatley I don't have any BCPR6's available so I can't switch back to see.. but I've messed with my V-AFC 100 times over and I can't figure this out... what do you think????

 

By stumbling, do you mean like a hesitation at around 3-4000 rpms? I have the 7 series plugs and I too have that problem.

 

Me too. I have the 7's. When its cold, the car had small stumble at around 3K rpm.
Wierd.

 

i had some wierd hesitation around 3000rpms too...that is until i installed my msd 6a ignition. Never had a problem since. Those are the same plugs i run in my civic and they are pretty awesome. Works very well.

liam

 

Yea when I say stumbling, I mean a hesitation from like 3-4.5k, cept it does it even after warmed up. I do think it's the plugs, so I'll probably have to switch back to 6 series till I get an MSD to amplify the spark, generate a little more heat. Or maybe advance the timing a little bit on mine now and see if it helps. Thanks..

 

switch and let me know what happens.