Misfires ~1500 rpms, seems to happen most in #1
07-25-2008, 12:30 AM
#1
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Misfires ~1500 rpms, seems to happen most in #1 I keep getting Random cylinder misfire codes randomly every couple trips, the ses light comes on. I logged my car and notice that it is triggering misfires quite often about 1500 rpms. I dont seem to get any at other conditions. Car seems to run just fine from seat of pants but i keep getting this error.
I get the most misfires in cylinder #1 it seems just about every time. Since it seems to be rpm dependant, I don't think i have any mechanical problems.
Any advice?
I have my tune and some misfire logs posted in this thread with additional info:
http://www.hptuners.com/forum/showthread.php?t=19050
I get the most misfires in cylinder #1 it seems just about every time. Since it seems to be rpm dependant, I don't think i have any mechanical problems.
Any advice?
I have my tune and some misfire logs posted in this thread with additional info:
http://www.hptuners.com/forum/showthread.php?t=19050
07-25-2008, 08:58 AM
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This sounds like maybe an injector balance problem
with #1`being short on delivery (at narrower pulse
widths?).
Injectors at the end of dead-end rails are silt traps.
The easy diagnostic is to swap #1 with (say) #3
and see if the misfire moves.
You could also try the injector balance test and see
if it implicates your #1.
with #1`being short on delivery (at narrower pulse
widths?).
Injectors at the end of dead-end rails are silt traps.
The easy diagnostic is to swap #1 with (say) #3
and see if the misfire moves.
You could also try the injector balance test and see
if it implicates your #1.