carb i think

[moggyminor16]

hi all right i have just rebuilt a carb for the traveller.
well its like a dream,the plugs are going rusty brown in colour wich is right .just went out to try it as it cold out there it would not start tryed the choke nuthing run the battire down so put jump leads on . tryed again with out revs and choke it tryed to start ,then tryed i again it fired up with out choke and revs , pulled the choke out it was running like a bag of nails so pushed back in and runnin glovly
any idears .i will try in morning with out revs and choke will let you know what happens that way

[Willie]

It sounds as though you had flooded the plugs so that there was no spark.
the usual cure for this is to open the throttle fully and turn the engine over
until the plugs dry out and fire again. Leaving the car for some time would
also allow the plugs to dry out so that the engine would start normally when
you next tried. Do not really understand as you say that you tried to start it
as it was cold out there and THEN tried the choke when it wouldn't start!! If
the engine was cold then you should need the choke so if you don't there is
either an overrich mixture or some other maladjustment.

[moggyminor16]

thanks wille but is it normal that it will not need the choke to start when cold

[Willie]

NO certainly not on a cold engine, see if it starts in the morning without choke
and if it does we can go through the mixture adjustment if you are not too
sure of the method.

[moggyminor16]

ok thank you never liked doing it as never get it right at all just get one from the scrappy

[moggyminor16]

hi willie
went out this morning and tryed it no luck had to jump it as ran down the batt,tryed teh choke nuthing it did start in the end with out the choke so me thinks it needs ajusting again help i set the scew a one and 1/2 truns down but now i put it right to the top and still running fine help

[Willie]

ok, start by checking that the needle is correctly positioned in the piston.
The shoulder of the needle should be flush with the surface of the piston i.e.
it should NOT be just pushed as far into its hole as possible. Then check that the top surface of the JET comes up level with the surface of the carb bore
with theMIXTURE NUT UP ASFAR AS IT WILLGO if it doesn't then find out what
is stopping it from doing so). If these points are ok then take the mixture nut
DOWN twelve flats and see how it starts(it should need some choke). If it will
not start then take out one of the spark plugs and see if it is soaked with fuel.

[Willie]

MOGGY..forgot to say that when you have checked the needle position and
have refitted the piston and chamber it is important to lift the piston as high
as possible with your finger and check that it falls down again with a soft plop
as it hits the bottom. If it does not and stays up then it will give a rich mixture so you must investigate any sticking which occurs. DO NOT use any
sort of abrasive when freeing the piston in its housing.

[moggyminor16]

hi willie
well two things i got it going in the end went for a long drive (running like a dream got up to 80 with ease ) ,got it back i tought i would check the piston ,all was well all the way to the top and down but with out the little knock a the bottom hrm ,so i look at the jet sitting in the center. so i undid the jet houseing so it would have th elittle knock at the bottom did it all up and the piston is going all the way up and down with the knock . then i took off the rocker cover to line all the timming up just incase. all fine , took the dissy cap off to clean it all up and there was somthing wrong .the bit in the middle that conects to the rotter arm the springy thing. was missing .now my son (aged 3 )found somthing on the floor he said that it was from the car ,i look told him no it was his .but as you can see it was mine from the dissy .so i have now changed the dissy as well ,it started good but was still warm so i will have a go later to night about 12 ish when she is cold fingers crossed please .
so pleople if you child comes to while you are working on your moggy or any car and tells you that this item thay have in there hand is from your car please do have a good look at it could save you a lot of time
plm
mmm16

[bmcecosse]

Well the jet centering was ideal - this needs doing after any carb fiddling - and I guess you now owe your son a large ice-cream ! If you were rebuilding the carb - how did the spring escape from the dizzy cap ?
The car MUST need the choke to start from cold - otherwise it is miles too rich, or flooding over the jet! The spring should have a little carbon brush attached - do you now have both spring and carbon brush in the dizzy cap ? Hard to imagine how it ever started without the spring! Why on earth was the rocker cover off to set the timing ?

[moggyminor16]

no got a new one as he ran off and hid it somwere

[moggyminor16]

well went out there this morning and i had to use the choke so that bit is right thanks willie
will check teh plugs to see what thay look like after a cuple of day may need help again
cheers all
mm16