S13 KA24DE: Please help! Running rich/White smoke

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MezaS13
Posts: 20
Joined: Fri Mar 01, 2013 1:15 am
Car: 1991 Nissan 240SX (Coupe)

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PLEASE HELP!
KA24DE Running very rich, spitting gas and white smoke through the pipe, I changed O-rings and one faulty injector, changed spark plugs, checked current on spark plug cables, cleaned and checked all grounds! I switched ECUs with a friend and I still got that problem. I checked my ECU for codes and got #11 Crank angle sensor #21 Ignition Signal and #45 Injector leak but I changed the o-rings so Im left with 11 and 21.

I read an article about a guy who had the same problem and it was his dizzy that was off for like 20 degrees, his ECU, and MAF wiring. But how is it possible that the dizzy moves because it has a gear unless its stripped which is unlikely?


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CSUPUEBLOTIM
Posts: 742
Joined: Mon Mar 31, 2008 3:45 pm
Car: 1992 240sx Sr20det Coupe Silvia Front

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For #11 you need to check power and ground at the sensor. At terminal b, second one in from the left to ground you should have battery voltage present with ignition switch in the on position. With ignition switch off, go from terminal a, first one from the left on the connector to ground and you should have continuity. If either of these test fail then you need to inspect your harness. If it checks out, then replace your crankshaft sensor.
#21 same testing with multi meter as for #11 (only a 2 terminal connector at the ignition coil) only thing to add is with the ignition switch off, also check for continuity between both terminals as well. Visually inspect all of your ignition components, look for burns or listen for possible arcing.
Easy way to check #45 is to pull entire rail assembly as one, turn ignition switch to on position and see if you have any leaks from the injectors. Also make sure your spark plugs aren't went. If they are it may be a sign of an injector leaking in that particular cylinder.
Also if the "dizzy" bolt becomes lose it can adjust timing. Make sure to set your base timing just to be sure.


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