if your megasquirt only ran on 2 cylinders, what would you check?
05-10-2011, 06:37 PM
#1
Junior Member
Thread Starter
iTrader: (1)
Join Date: Aug 2008
Location: Evansville, Indiana
Posts: 314
Total Cats: 0
if your megasquirt only ran on 2 cylinders, what would you check?
for real.
cause mine only fires on one and four. there's fuel on two and three, but no spark (verified via timing light). all four fire on the stock ecu.
cause mine only fires on one and four. there's fuel on two and three, but no spark (verified via timing light). all four fire on the stock ecu.
Reply
0
0
05-10-2011, 11:09 PM
#6
Cpt. Slow
iTrader: (25)
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,175
Total Cats: 1,129
Switch the coil outputs, so the 1&4 signal fires the 2&3 coils. If it does actually do this, than it is indeed the MS, and not anything between the MS and the coil. Don't always blame the MS.
Reply
0
0
05-11-2011, 01:15 AM
#7
One of the transistors that controlled 2 injectors had the legs bridged on my MS. Yeah, it took quite some time to find this.
DSC_0054.jpg?t=1305090889
Also, what Curly said. I swear every time I have my engine out for a significant period of time I route the plug wires incorrectly and spend hours trying to figure out why its only running on 2 cylinders with soaking wet plugs.
DSC_0054.jpg?t=1305090889
Also, what Curly said. I swear every time I have my engine out for a significant period of time I route the plug wires incorrectly and spend hours trying to figure out why its only running on 2 cylinders with soaking wet plugs.
Last edited by Bryce; 05-11-2011 at 01:35 AM.
Reply
0
0
05-11-2011, 06:49 AM
#8
Junior Member
Thread Starter
iTrader: (1)
Join Date: Aug 2008
Location: Evansville, Indiana
Posts: 314
Total Cats: 0
I dont understand how this is going to help. I know that the coil will send a spark and fire cylinders 2 and 3 on the stock ECU, and not the MS. How could it NOT be a problem with the megasquirt?
Reply
0
0
05-11-2011, 06:53 AM
#9
Cpt. Slow
iTrader: (25)
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,175
Total Cats: 1,129
Ah, I must of skipped over that part. Sorry, next time I won't contribute. So all you're doing is unplugging the stock ecu, and plugging in your adapter harness and MS?
Reply
0
0
