[tookey71]

I have a 1991 Hb 4 cylinder (KA24). The truck has been running fine until Monday evening I ran into the grocery store for 10 minutes.The truck would turn over ,but would not start. Cheked to make sure the truck was firing(OK),checked for fuel(OK),smelled gas really strong.After about 20 minutes the truck finally started ,but it was pouring black smoke from tailpipe.I have checked the codes and got a 13 Engine temp. sensor. Will the engine temp sensor make the timing move around 10 to 15 degrees? Do you just replace the engine temp sensor? Any other ideas!! Thanks

 

[veesix]

Change out the sensor. The truck is 17 years old.

 

[tookey71]

What about the timing ? Is it because of the rough running of the motor.

 

[veesix]

It's the air\fuel mixture that is messed up when the sensor goes. Put in a new sensor and go from there.

 

[tookey71]

Replaced sensor today . Checked timing Everthing seems to be OK!! What is the best spark plug to run in the KA 24 motors?

 

[rdixiemiller]

I think if the engine overheats the ECU richens the mixture and backs off the timing to try to cool the engine down with unburnt fuel.

 

[veesix]

Just one point. Now would be a good time to clear the codes. The old error codes are saved in the ECU, so now that the new sensor is in, clear that memory.

 

[veesix]

This is the good spark plug. NGK Spark Plugs USA

 

[tookey71]

Thanks for your help.

 

[pablo343434]

where did you buy your code reader --i cant seem to find one fora 1992 nissan truck