Car misfires after warm up when driving.

SOURCE: no start 1992 300zx

Did you try rotating the CAS input shaft? Remember that the cams spin at half the speed of the crank, so a full spin of the CAS is actually 720 degrees. It could be that the CAS is 360 degrees out of phase and causing the car not to run properly. Unbolt it and remove it carefully. Rotate the input shaft (the part that mates with the cam) 360 degrees and put it back on, and see if that helps.

Also, just making sure, when you double-checked the cam timing marks, you did verify that in addition to the four cam sprockets being aligned properly, the crank timing mark is also aligned correctly, right?

SOURCE: 95 maxima rough idle

The injector could definitely trigger a misfire code, but you also mentioned that you had a mass airflow sensor code , that code code be responsible for te sluggish moment of the vehicle and rpm going up and down. However if you have a misfire onCyl#6 and the coil and the plug is good the ONLY other thing to cause a mis-fire would be the injector. To check the injector get a NOID light, you can get one at almost any auto-parts place. To use unplug injector plug from the bad injector and connect it to NOID light the light should have a steady PULSE/ligt flickering. If light flickers fine then injector is bad and will need to be replaced. If light doesn't flicker or flickers intermittently then you may have a bad wiring to that injector. Check if wiring is good, then you may have a bad cam sensor or sensor gear. Good Luck and contact if you need more help. Thanks for using FIX YA

SOURCE: Car Shakes When Driving

I had the shaking problem too, had the #5 coil replaced and the shaking instantly stopped.

SOURCE: when engine is warmed up the car begins hesitating

check your engine vacuum pull off a line near you egr port ..egrs get clogged as well ...test your vacuum you need to be steady close reading near 14in hg
next your oxy sensor could be working but slow leaning out your injectors and also understand that a voltmeter can test your sensors now do not forget about plenum or intake leaks ...if your car has an idle control valve it can be malfunctioning i usually only see them go bad in cadillacs though..

SOURCE: new clutch and car is still slipping

in some cases if the ther is not enough free play in the clutch pedel as the engine area heats up things will expand in this case the distance of freeplay in your clutch pedel. have your clutch pedel freeplay adjusted. Also it is recomeded NOT to resurface the flywheels on nissans It dose change the hight and the distance for where the fingers of the pressure plate and the release bearing flang contact