keeping jumping timming

[PDX_S14]

i just check my timing and is not at 15* . when the last time i did my timing it was at 15* right on the dot. what cause that? also when i un-plug the tps the rpm dont drop? help me out guys. thanks

[efrain240sx]

I have the same wierd problem whit idel not dropping when I unplug tps but the weird thing is that when I plug in my friends ecu idol drops but not whit maen. What sr do you have and what ecu?

[DawgMode]

make sure u tighten tha bolts onthe botton of tha CAS aswell as tha top

[PDX_S14]

sr red top with 62 ecu. yea i check all my bolt are tight.

[nismostate]

are you setting the timing while your motor is warm? how bad is the timing changing? it's not going to stay exactly 15 because the ecu adjusts it.

[Nismo_Freak]

Make sure you rev the engine 3 times before you start checking the timing, with the TPS unplugged. This sets the ECU into timing mode.

Timing jumped around 2-3 degrees on my NX before I did this.

[PDX_S14]

yes, the motor is warm up compeletely.

ok nismo freak ill give it a try rev the motor 3 time... im sure i did that . now my motor keep popping eveytime i shaft ? timming off ?

[Nismo_Freak]

yes, the motor is warm up compeletely.

ok nismo freak ill give it a try rev the motor 3 time... im sure i did that . now my motor keep popping eveytime i shaft ? timming off ?

Thats normal, you more than likely have an atmospherically vented BOV and when it opens it vents air, the motor runs very rich for a moment, and this rich mixture ignites as it leaves the muffler.

[PDX_S14]

yea blitz dd... havent re did my timing yet... but ill do it soon and ill get back to you nismo freak

[PDX_S14]

did my timing again today and it was good......rev the engine 3 times before i start checking the timing, with the TPS unplugged. timing is good now it stay at 15* and it dont pop everytime i shaft very smooth too... thanks guys.....