Hi Every One. I have a few questions if some one can help me resolve the issue throughout ..I believe others will also benefit with our discussion.. So here is the Issue..
I have Honda Civic 2002 Pakistani (No O2 Sensor But its has IMA (Trimpot) Instead)
The car has a weird problem.. It all started when i took it to fill the gas for AC and its compressor connection wires..After that the car started the issue of High RPM when ever i Press the clutch and release the Accelerator while driving... the RPM shoots to 1500-2000 ..and stays there for about 15 seconds then slowly it drops when i release the clutch padel..This happened both with AC and without AC turned ON..It also started misfire which i could feel from the silencer ...
So i disconnected the AC from Fuse Box from its Cutouts but the problem remains the Same...
I started Fixing it with IACV and Changed that as i already had a spare one... but the problem remained the Same...Cleaned and Serviced the Throttle body and MAF.., Injectors, Plugs (I noticed carbon buildup on the plugs as well)..The Misfire issue has reduced some what now but the following problems are still there..
Checked all the vacuum leaks. and pipes. but apparently all ok...
Checked the Coils....

1. High RPM when clutch is released (Accelerator wire is not stuck..) Its a random problem appears mostly but not everytime..
   
2. RPM stays high for 10 seconds even when i press and release the accelerator at parking... then gradually comes down
   
3. Gasoline smell or feels like unburden fuel while the car idle..
   

Here i would like to mention that i have many spare Fuel pumps.. i tried that as well..but i have never checked its fuel filter .. i think in this model its somewhere under the tank outside the vehicle?
The car used to through water earlier and had almost no engine sound...but now it has a bit big noisy sound...like running rich maybe???
I use Havoline 20-50 oil and service is on time...

Thank You and waiting for suggestions...