D15b7 skipping or missing at idle?

[TheSaint]

hi there - just noticed this over the last few weeks

when the car is at idle - it kind of misses or skips a litte

the revs stay constant - and its very hard to notice

if you sit still and listen and feel the car you can hear it - ever 4-5 seconds it has a slight jump

i have adjusted the valve lash, checked oil, checked coolant, checked intake, checked plugs, as far as i can see its all ok

the only thing i can think of is maybe my ignition timing isnt right? or the cam isnt dialed in properly? (D16a6 cam with bisimoto cam gear)

any ideas would be appreciated

[ekcoupe]

Have you tried cleaning your fitv (fast idle thermo valve)?

here is a link to a diy - http://honda-tech.com/showthread.php?t=1564019

[TheSaint]

doing it right now ... ill let you know how it goes

[ekcoupe]

good luck mate:thumbsup:

[TheSaint]

was actually a pretty easy job - car idles nice and smooth now - just did the valve lash adjustment yesterday as well =)

didnt really fix the problem though - but i found as the car warmed up it went away - usually it doesnt do this ... hrmmm

[dougie_504]

tappet adjustment?

[TheSaint]

just did the valve lash/valve clearance/tappet adjustment yesterday

been doing this for a while - still does it now

[dougie_504]

NFI. Btw man can you post me a pic of your bay? :D

[TheSaint]

like this?

http://i400.photobucket.com/albums/pp81/the_saint7/PA010281.jpg?t=1285921828

http://i400.photobucket.com/albums/pp81/the_saint7/PA010283.jpg?t=1285921828

[dougie_504]

hawwwwt

[ekcoupe]

clean bay:thumbsup:

have you tried cleaning your IACV (Intake air control valve)?

[na-118]

checked plugs? have you gapped them?
check resistance on leads?
get fuel sample kit