BobStrop 3 Posted May 19, 2017 So ive got the ute spitting out black water from the exhaust...apparently its not that big a deal but im still keen on sorting it. In investigating, Ive also noticed a few other things..... All the hoses seem to be connected alright, Ive replaced the spark plugs, leads test out ok, distributor is ok, fuel line looks alright, air filter is replaced etc. Im waiting on a carb repair kit to arrive and then ill re build it. I think there may be an obvious issue - the yellow wire going to the choke only has 7V on it (?) and the red wire with it is cut off. I think it should be going to the idle solenoid (which has the lug cut off) and giving 12V? Ill have to check why theres only 7V on the choke but will this idle solenoid be an issue? How exactly does it work? Why would it have been disconnected? Thanks Share this post Link to post Share on other sites
Mr Polson 10,214 Posted May 19, 2017 Choke is only meant to have 7V. Idle solenoid springs outwards into carb when no power is supplied, blocking the idle circuit and stopping any chance of "run on". They're becoming a common failure and not available aftermarket so best thing to do is undo it, cut then of and reinstall.Sent from my Pixel using Tapatalk 1 XTREME KARTS XF reacted to this Share this post Link to post Share on other sites
BobStrop 3 Posted May 19, 2017 Interesting...thanks Mr Polson Share this post Link to post Share on other sites
deankxf 20,288 Posted May 19, 2017 i thought XEs were a vacuum idle cut solenoid, have you got a pic of the side of the carby handy? Â black water from the exhaust when cold would just be condensation with soot.. wouldn't worry about it, bet it doesn't do it when everything is warm(if so, where is it coming from?.. coolant staying full? if so, good.. ) Â Â Share this post Link to post Share on other sites
BobStrop 3 Posted May 20, 2017 Ive taken a few photos but the forum is limiting the size of them to 0.02MB!? You cant make it out at that size? ...coolant staying full? Do you mean the coolant fluid reservoir ? Its not full...could that be a problem? Share this post Link to post Share on other sites
deankxf 20,288 Posted May 20, 2017 14 minutes ago, BobStrop said: Ive taken a few photos but the forum is limiting the size of them to 0.02MB!? You cant make it out at that size? ...coolant staying full? Do you mean the coolant fluid reservoir ? Its not full...could that be a problem? nah, the coolant overflow almost never works on old cars as it should.. like actually looking in the radiator. yeah i used to use photobucket.com to post pics, but its being very troublesome so now i am using https://imgbox.com/ upload it to imgbox, copy image location and paste it into the message Share this post Link to post Share on other sites
BobStrop 3 Posted May 20, 2017 Ok, yeah radiator is full... Â Share this post Link to post Share on other sites
deankxf 20,288 Posted May 20, 2017 good work getting the pics working.. yeah its got what i'd call an XF carby(probably 99% same) with the electric fuel cut solenoid, bodge it like Mr Polson suggests above(remove and cut off the plunger) i'd think unless you are losing coolant, there is no issue with the water in the tailpipe. Â 1 Outback Jack reacted to this Share this post Link to post Share on other sites
BobStrop 3 Posted May 20, 2017 Is the plunger the little spike that sits inside and is on the spring of the solenoid? Cut that off? So its not blocking flow? What does it actually do though? Share this post Link to post Share on other sites
deankxf 20,288 Posted May 20, 2017 8 minutes ago, BobStrop said: Is the plunger the little spike that sits inside and is on the spring of the solenoid? Cut that off? So its not blocking flow? What does it actually do though? when the ignition is on, it powers up that plunger, sucking it back to allow fuel to flow in the idle circuit.. when you turn the ignition off, it shuts fuel off to idle and it wont run on(some call it dieseling, occurs when the hot engine and compression can ignite fuel still being sucked in even when ignition isnt firing) cutting the tip off will mean it can idle.. (which it shouldn't now.. unless someone has cut it already.. which maybe has, because i thought they had a brass end on them) 1 Outback Jack reacted to this Share this post Link to post Share on other sites
Valvebouncer 2,389 Posted May 20, 2017 Unscrew the idle solenoid, if the pin hasn't been cut off and there is no power running through it but the car idles at all your carb needs a rebuild. The idle circuit would be blocked.Buy the major rebuild kit, it has schematics showing how the carb goes back together. Also buy a couple of can of carby cleaner, an old tooth brush to scrub it all down and blast everything and every hole with compressed air. The compressed air is crucial to cleaning out the galleries. 2 MNTL.XD and Outback Jack reacted to this Share this post Link to post Share on other sites
BobStrop 3 Posted May 21, 2017 Righteo...so i reckon it looks like it has been cut (theres nothing really on there apart from a short pin which looks chopped) as it idles no worries. Ive bought this kit and ive got the Gregorys to put it together so i should be ok (waiting for it to arrive). Will one of those compressed air cans suffice to clean it out? Im trying to get my head around the valve and idle timing...Ive read alot online and in the manual but i think the manual is describing a slightly different carby to mine? The fast idle screw is the one against the cam? And the larger screw at the bottom with the spring is the idle speed screw? As you can see, it is all the way in and is not hitting the lever...surely thats not right? Also the third of the three studs in at the top of the housing has broken off which will not stop the cam. Not sure how i can get around that... Â Share this post Link to post Share on other sites
BobStrop 3 Posted May 24, 2017 Can someone give me an explanation as to how the throttle arm and cam works in relation to the chokes and fuel/air mixture? Ive been searching for hours but cant get my head around it still. Hopefully the carb repair kit arrives tomorrow... Share this post Link to post Share on other sites
MNTL.XD 3,831 Posted May 24, 2017 http://www.xfalcon.com/forums/index.php?/topic/11591-xf-weber-into-nissan-patrol/Sent from my SM-G900I using Tapatalk Share this post Link to post Share on other sites
Mr Polson 10,214 Posted May 25, 2017 Â Look at the front vac tree, two ports look open?That won't help the idle.Sent from my Pixel using Tapatalk 1 Valvebouncer reacted to this Share this post Link to post Share on other sites
deankxf 20,288 Posted May 25, 2017 2 hours ago, Mr Polson said:  Look at the front vac tree, two ports look open? That won't help the idle. Sent from my Pixel using Tapatalk  top one goes to the air cleaner(removed) middle one is blocked (factory never cut the end off) 1 XTREME KARTS XF reacted to this Share this post Link to post Share on other sites
BobStrop 3 Posted May 25, 2017 On 24/05/2017 at 1:23 PM, MNTL.XD said: http://www.xfalcon.com/forums/index.php?/topic/11591-xf-weber-into-nissan-patrol/ Sent from my SM-G900I using Tapatalk  Cheers, Ive seen that but doesnt really explain the operation of the cam steps etc. And does anyone know about the idle screw in my photo? Surely it shouldnt be all the way in? How exactly do i set the correct fuel/air mixture? Im thinking the lingering smell of petrol has something to do with this.... Sorry for all the questions, i really appreciate the help fellas! Share this post Link to post Share on other sites
Mr Polson 10,214 Posted May 25, 2017 Try this one mate. Hopefully it explains it well enough.http://www.ozfalcon.com.au/index.php?/topic/7026-Ford-Registered-Technician-Bulletin---34-ADAM-Weber-CarbSent from my Pixel using Tapatalk Share this post Link to post Share on other sites
deankxf 20,288 Posted May 25, 2017 Â this should help.. the fast idle is set by the choke .. never messed with that, so cant really help the idle speed screw i reached with my finger and thumb, its not usually tight. mixture screw i haven't messed with ever 1 XTREME KARTS XF reacted to this Share this post Link to post Share on other sites
Mr Polson 10,214 Posted May 25, 2017 Mixture screw is meant to have a blanking plug over it. Apparently constant adjustment of it can cause damage as it's actually in the a plastic bush which goes brittle with heat and age - and you can potentially end up with the mixture being sucked into the carb.Sent from my Pixel using Tapatalk Share this post Link to post Share on other sites
BobStrop 3 Posted May 26, 2017 19 hours ago, Mr Polson said: Try this one mate. Hopefully it explains it well enough.http://www.ozfalcon.com.au/index.php?/topic/7026-Ford-Registered-Technician-Bulletin---34-ADAM-Weber-Carb Sent from my Pixel using Tapatalk  That article is perfect, thanks a million. I thought i had searched all over for any Weber 34 info but never saw that. Big help. Ill clean it up tomorrow and let you know how i go. 1 gerg reacted to this Share this post Link to post Share on other sites
Mr Polson 10,214 Posted May 26, 2017 That article is perfect, thanks a million. I thought i had searched all over for any Weber 34 info but never saw that. Big help. Ill clean it up tomorrow and let you know how i go.Only added it last night Sent from my Pixel using Tapatalk Share this post Link to post Share on other sites
BobStrop 3 Posted May 26, 2017 Ha ha, didnt realise. Share this post Link to post Share on other sites
BobStrop 3 Posted June 6, 2017 Finally all put back together and seems like its running better...either way it was a good experience. Im still not sure that its set up correctly but ill keep thinking about it. If anyone from Sydney who knows a bit about them wants to come and give me a hand, let me know what beer you like.. Share this post Link to post Share on other sites
BobStrop 3 Posted June 19, 2017 Over a week later and im still got some issues... The new spark plugs have all got carbon on them again. What could it be? Are they not getting fired correctly? Maybe i should change the leads? How do i check the ignition coil is outputting the correct voltage?? Still got a strong petrol smell coming from somewhere but cant pin it. And tonight a whole heap of black water came out the exhaust! Cant win. Im regrettably thinking id better get rid of this. Ive loved working on it but i cant enjoy it yet Share this post Link to post Share on other sites