ive changed alot of things to try to correct the running rich problem any ideas anything would b apperciated

 

how do you know it is running rich?

removed emissions?

Stock or bunch of aftermarket/performance stuff?

what have you done to try to correct the problem?

 

egr stuff has been removed changed spark plugs changed ecu o2 sensors coolant sensor an tempature switch injectors and o rings ive tryd almost everything is all stock no bolt ons yet its just running rich i am gonna try changin my maf sensor but idk if thats the problem

 

KA's come a little on the rich side from the factory

removing the EGR valve causes them to run a little bit more rich because they were tuned for that extra little bit of air that isn't there anymore...

Again, How do you know it is running rich?

Are you dumping black smoke out the tail pipe?
Is there a little bit of black smoke?
Does it poof a little smoke after you've idle for a minute?
Do you have a wideband O2 sensor hooked up that is telling you are rich?

Did this happen all of the sudden? as in, you have been driving the car for a while and then all of the sudden "It got rich" or did you just get this car and you're trying to make it run better?

Do you have aftermarket exhaust?
That will let it smoke a little out the tail pipe too if you don't have a cat any more...

 

i just swaped my blown single cam to a 97 ka24de an wen i put it in its burnin fuel quick and when i give it gas it misfires and its fouling my plugs an there was alot of black smoke untill i swaped in new injectors now theres barly any smoke its runnin better it just not runin right like it has massive power idk if the engine was upgraded internaly it was a drift engine and was rebuilt from head to toe but now its running stock stuff and its running weird an wen i unhook maf it runns clean then wen i plug it n all the bs starts

 

you sure it was a 97?

you know that is an OBD2 engine right? so if it came with the stock harness and the stock ECU, then it is pissed off because you are missing an O2 sensor.

technically, you could have installed an OBD1 harness onto that OBD2 engine and used a obd1 ecu.

So you have an S14 MAF? an S14 ecu?

 

i swaped s13 ka24de intake manifoled and s13 ka24de harness an ecu and distribter an maf from a 93 s13

 

vacuum leak

probably the manifold gasket itself.

that's why it runs better when you take the MAF off... with the maf off, it is just dumping a preset amount of fuel based off of the TPS. So it doesn't care if there is a vacuum leak or not.

 

this is the lounge, you herp derp.


moving to nissan TECH