Hey I am wondering what could cause my engine to stall for no reason, it happens when I'm idoling, it moves below 1k then pops back up and then just goes all the way to zero.

 

Please give us all the info on your car,miles,year,service done,mods,etc.

 

go to the gas station and purchase some injector cleaner and then once you start the car and red line it for about 10 sec, it should fix the problem

 

ok. i have an 2004 mazda rx8, with new sparkplugs, ignition coils, sparkplug wires, engine mounts, the mods i have done are short ram intake(good sound), and a catback exhaust. the dealer said its carbon buildup.

 

he is could be right. Do try what I suggested I had the same problem last summer and then I started to use injector cleaner and it worked very well.. so give it a shot

 

#1 rule of rotary engine troubleshooting...compression test.

Also you can try to remove the throttle body, gently push the blade open and hold it, and clean the blade tips and throttle body of carbon/oil buildup, and it may help your idle a bit.

99% of the time difficulty starting and idling in a rotary is due to weak compression from a worn out engine.

 

+1 compression test first.

 

put the stock intake back see if it helps.

 

Yep, that's the problem. crappy intake.

 

I just think its his injectors, run some cleaner and rev it hard and it might go away.. thats the cheapest and easiest way, if that does not work clean the throttle and then go and see if it is your intake that is causing the problem

yey 400th post

 

Ok, I tried the injector cleaner, didn't work, ill try. The cleaning method, but as for the intake, I bought it with aftermarket, its k&n so it should be good.

 

This happened to me after disconnecting the battery. Did you recently disconnect your battery?

 

make sure it has the mesh screen inside the intake tube. without them could lead to irregular idle.