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#1 Mikuni carb problems !
estyre Posted on: 2012/10/6 16:37
hey everyone ,im having some problems with my solex carbs on my a15 ,was driving it today and it was running mint ,then suddenly it would start bogging under throttle ,sounded like the key was turned off and the throttle depressed


so we pulled over and popped the bonnet ,one of the jet covers came loose and came off while driving ,this shouldnt effect the opperation of the carbs

then i tried starting it again and it started eventualy ,and idled fine then i tryed revving it and it would bog again ,so i decided to try and limp it home ,as soon as we got onto the road we putted along then tryed flattening it ,and it just pulled ,spun second just rolling on it but then started playing up shortly after

checked the fuel pressure and its at 4psi

only thing i can think of is a jet being blocked but it wouldnt stall or just drop power all together would it? it would just run on 3

also thinking it could be plugs ,or them giving up when they get hot as im running bp4es ngk plugs in and enginewith 12:1 comp ,which is one hotter than stock ,ive got bp6es plugs for it so ill try them but its wierd for it to just do it suddenly

anyways if anyone can help that would be great :)


#2 Re: Mikuni carb problems !
ddgonzal Posted on: 2012/10/6 18:42
Not likely to be the plugs.

This can happen with any carburetor, including the stock Hitachi. Sounds like a jet got block, some crud got into the fuel bowl. Rinse out the fuel bowls and she'll be right.

And make sure they are finger tight. If they cover got loose, so could the jets.


#3 Re: Mikuni carb problems !
Posted on: 2012/10/7 1:04
Did The engine etc suffer any damage in the Ute roll over Jesse? Or could it.net elec issue with.the 1k??


#4 Re: Mikuni carb problems !
estyre Posted on: 2012/10/8 5:31
Nah didnt hurt the motor i had my foot on the clutch when it flipped and it just stalled

cleaned.jets and still does it ,gonna check a vanturi hasnt come loose then if its not that ill look at weak spark and stuff

msd ignition with a giod coil it shouldnt be playing up


#5 Re: Mikuni carb problems !
DatsAmore Posted on: 2012/10/8 5:53
Hey Jesse,

I remember having the exact same problem with my old 2TG Celica. DD is right mate, check your needle seats for tightness underneath the jet covers, as they do have a tendency to come loose.

P.S. Any luck with sourcing another ute body yet? Kdogg may have one, but there might be cancer...


#6 Re: Mikuni carb problems !
estyre Posted on: 2012/10/8 8:41
Hey mat nah no luck so i bought a 4dr thousand instead haha

ye checked that before and was all tight

pulled dizzy cap off to find an ark mark on the inside and the centre of the rotor button has found an earth through a pin hole and has been arking out on the clip/spring that is on the inside of the button ,it holds the button the the dizzy shaft and looks to be the problem

got a new cap at lunch so ill try it after work and hopefully it fixes it






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