problem with spuddering
#1
Elite Member
Thread Starter
iTrader: (12)
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
problem with spuddering
It seems that when I get to around 5k rpm and above, no matter the load, it starts to sputter. I lessened the gap on the spark plugs to no avail... I am going to log a run right now. Any ideas? AFR seems fine when it does it..
#6
Elite Member
Thread Starter
iTrader: (12)
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
alright ill get new spark plugs, and I just ordered better plugs for the toyota COPS so I can eliminate my wiring as a issue.
Any way to check the CAS output? There seems to be no odd things on the datalogging. I need this fixed before sat for the dyno day haha.
Any way to check the CAS output? There seems to be no odd things on the datalogging. I need this fixed before sat for the dyno day haha.
#11
Elite Member
Thread Starter
iTrader: (12)
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
Ok here are two logs. I think I need to re calberate my LC-1, because its reading almost a full point higher than normal .The first log is my regular map for like a year, The seconded log is with 17 fuel points added above 100 kpa! .
Every time I was at full throttle, it was studdering. You should be able to tell by the bumpyness of the rpm graph.
Im not sure what to do guys. Vacuum at idle is perfectly normal, and driveing out of boost is fine. Maybe its a loose wire??
HERE IS THE FIRST LOG Free File Hosting Made Simple - MediaFire
Every time I was at full throttle, it was studdering. You should be able to tell by the bumpyness of the rpm graph.
Im not sure what to do guys. Vacuum at idle is perfectly normal, and driveing out of boost is fine. Maybe its a loose wire??
HERE IS THE FIRST LOG Free File Hosting Made Simple - MediaFire
#13
i was about to tell you to swap out the coil with someone to check it out. i just went thru an ordeal that turned out to be a coilpack "going" bad!
mine would run fine until i got into boost. couldn't figure it out, especially since it started happening immediatly after another completely unrelated fuel issue. finally the car started running bad at idle and i found it in seconds, AFTER i ordered a 150 dollar serial adapter to datalog with my link ecu. glad you found it quick.
mine would run fine until i got into boost. couldn't figure it out, especially since it started happening immediatly after another completely unrelated fuel issue. finally the car started running bad at idle and i found it in seconds, AFTER i ordered a 150 dollar serial adapter to datalog with my link ecu. glad you found it quick.
Thread
Thread Starter
Forum
Replies
Last Post
Zaphod
MEGAsquirt
47
10-26-2018 11:00 PM