I did a compression check on my car the other day and I had 93 for front and 73 for rear, so I did that ATF trick with MMO instead to maybe build up a little compression but it still is idling at 1000-1100 rpms. It also backfires alot just idling but if you go over 4000 it stops backfiring. It also smokes a little to when accelerating but that might still be from the MMO. Has anyone fixed a problem like this?

 

high idle has a load of possibilities, mainly vacuum leaks, check your intake tube as well

 

i wrote up a nice piece of ifno on setting your idle in this topic:



https://www.nopistons.com/forums/ind...howtopic=34983



kevin.