so i have a 93 civic dx d15b7 with headers and intake.

it has an idle problem i searched and found the FITV and IACV threads. I cleaned them etc. The car still idles loopy.

My hose from the fuel tank that goes to the rail is cracked. i always get a nice smell of gas when i drive the car hard and come to a stop light. If i drive the car hard and then stop the rpms bounce 1k to 1.5k. Now if i drive normal it rarely happens. and it always idles btween 1k-1.5k when its cold.


ive cleaned the TB IACV FITV throttle cable.
i have a feeling my problem is fuel related. What is a common factor for idle problems with fuel. should i check the fpr? replace filter? please any help i tohught i could have solved this problem today but i can't

 

need an answer lets go

 

le bump

 

fix the cracked fuel line?

 

i did

 

check the vacuum hose for the FPR idle issues are mostly vacuum lines. double check them all. You can try the can of carb cleaner trick spray it around and if your idle changes you have found your vacuum leak.
I would say if that does not change tune up plugs, air filter, and fuel filter. Cap, rotor spark plug wires I don't see being a idle issue but you never know.

 

oem honda plugs wires and cap replaced. cleaned the fitv iacv and tb replaced the line from the tank to fpr

 

up

 

also the white piece that screws into the bore has a hole in it

 

bumppp

 

I already have tried this but still I m finding the same problem Please provide some good suggestion.

 

i sprayed cleaner all around the IM TB and hoses and nothing no change in fluctuation

 

ok i just came back inside i checked my iacv again and cleand it again there are two holes and only one screen are they supposed to have two screens could this be the problem

 

bump