hunting BB4

big damo · Post by **big damo** » Mon Jul 21, 2014 4:33 pm

Just took it out and a half of it fell off, save to say I need a new one. Can I get it from honda or do I buy a whole new valve?

Post by **NafemanNathan** » Mon Jul 21, 2014 5:02 pm

I wouldn't even consider entertaining Honda prices. Look for a known good second hand one.

quarkhimself · Post by **quarkhimself** » Mon Jul 21, 2014 5:58 pm

i have the same problem as well, but mine only hunts when the engine is hot, so i believe it should be related to the IACV. i disconnected the IACV and it stopped hunting, so in my case i'll start with the IACV . have you got any photos of the damage you found on your FITV ?

big damo · Post by **big damo** » Mon Jul 21, 2014 7:06 pm

I haven't got any photos sorry, I'll try and get a new one tomorrow and I'll keep you all posted

big damo · Post by **big damo** » Wed Jul 23, 2014 1:27 am

Hi ladies and gentlemen, I went to a scrap yard and got my hands on a second hand FITV and the white plastic retainer, have fitted it and she is purring like a kitten l. Only have one problem Tho she's idling at just under 1000rpm when cold but when warmed up is idling at 1500rpm. Do I need to wind the white plastic retainer a bit more articles do I need to adjust some thing else?

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Jul 23, 2014 8:48 am

Does the idle come down again when the engine is fully, properly warmed up, or does it stay at 1500?

big damo · Post by **big damo** » Wed Jul 23, 2014 10:01 am

It stays at 1500rpm

Post by **NafemanNathan** » Wed Jul 23, 2014 10:06 am

Have you done the same trick and blocked the lower hole in the throttle body? Does it idle fine then again?

big damo · Post by **big damo** » Wed Jul 23, 2014 10:15 am

Not yet, would it matter if the fitv I got was out of a bb3? Also top of the fitv was a different shape to mine ( more of a cone then a dome)

Post by **NafemanNathan** » Wed Jul 23, 2014 10:21 am

At a guess I would have thought they were different, but obviously it mounts on ok. Did you compare the actual interfaces between the FITV and the manifold to see it they were the same. If they're even slightly different then there's the potential for a leak.

Do the thumb test again though to make sure it's still the FITV at fault first.