ok i purchased a 1991 DX ef hatchback yesterday from a buddy of mine. it runs great when its cold but when it starts to get warm it acts like it is gunna die out an loads up with fuel. if i rev it up it seems to run good but if it jus sits there an idles it starts to chug out an eventually will die!

it recently had the head gasket replaced as well. guy who i bought it from said he thinks the timing is off a tooth but in the past if a sohc is off a tooth it wont idle right at all.

can anyone help!!

 

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/how-fix-your-idleing-woes-fitv-iacv-2153910/

Ther u go..

 

^^ didnt really do much for me i already knew all that it jus has me stumped its a dual point injection an ive never messed with this stuff before im used to multipoint

 

ttt anyone

 

injector stuck open?

i would check the timing just to be safe as well.

 

yeah im going to check the timing right now i hope this does it

 

um you bleed the coolant? lol that and timing is the only thing i can think of...

 

Hold on, any CEL codes?

It could be a IACV issue as well. First, post up any codes that pop up.

 

my vote is coolant.. bleed the system.

 

no check engine lights would coolant make it die out??

 

it will make it idle surge like rev up and down and up and down..... um double check timing, check your compression in the cylinders just to make sure too....

 

Had a couple of these come in recently with running/idle issues. It ended up being the map sensor and neither car had codes.

 

compression is 125 or so all across i also replaced the cap an rotor

 

wow those are some really low compression numbers :/

i don't think that would cause your idle issue though.. its probably a vaccum leak and/or your iacv. and as was said it could be that you have air in the coolant system. you can try pulling the iacv off and cleaning it out with brake cleaner. let it dry before reinstall. also you could try replacing the seal between it and the manifold. iacv is located here...



this may also prove useful..

 

do you think it could be a bent valve??

 

Ttt

 

heres a video of what its doing if this helps.
http://s180.photobucket.com/albums/x...ent=tyscar.flv

 

bump

 

T the T

 

Help!!!

 

have you checked everything i put in my previous post?

 

did you check the timing?

maybe adjust idle screw to raise idle when it gets to low and wants to stall? when car warms up its no longer in cold start fast idle.

fuel filter?


again basically whats posted up top.