1200 6v 54 bug · Aussieveedubbers

wolfgang54 · 10 Jul 2011, 12:36 pm

looking for some ideas for problem solving.

when accelerator is depressed coming out of corner or up a hill, the engine will intermittently feel flat or a very slight miss. seems to be when a light load comes on.

have checked dizzy/points - ok
plugs look ok
fuel filter ok/new

the carb inlet manifold heater does appear blocked, hot one side to first bend, warm other side to first bend, centre section where siameses with inlet manifold is cold.

any ideas for checking the obvious?

vw54 · 10 Jul 2011, 4:22 pm

what dissy do u have fitted the mechanical or a vacuum type

wolfgang54 · 10 Jul 2011, 5:05 pm

vw54 wrote:what dissy do u have fitted the mechanical or a vacuum type

original bosch (mech?)

volumex · 10 Jul 2011, 6:14 pm

An intermittent problem won't be the manifold heat - carby ice just gets gradually worse.
Original dizzy is mech and vacuum advance - IIRC yours is a later 54 -> BR8.
I'd suggest you check the vacuum advance on the dizzy is working & the timing is correct.

wolfgang54 · 10 Jul 2011, 7:22 pm

volumex wrote:An intermittent problem won't be the manifold heat - carby ice just gets gradually worse.
Original dizzy is mech and vacuum advance - IIRC yours is a later 54 -> BR8.
I'd suggest you check the vacuum advance on the dizzy is working & the timing is correct.

timing was done just 100 odd km go by house of dodd.

i'll check dizzy, not sure if it has a vac advance. will have snoop around... thanks very much

wolfgang54 · 11 Jul 2011, 5:42 pm

volumex wrote:An intermittent problem won't be the manifold heat - carby ice just gets gradually worse.
Original dizzy is mech and vacuum advance - IIRC yours is a later 54 -> BR8.
I'd suggest you check the vacuum advance on the dizzy is working & the timing is correct.

thanks very much mate and vw54. 😎

fitting into inlet manifold which receives hard vacuum line was loose.

started it up and it runs very sweeeeet again. not road tested yet, but that should be it.

vw54 · 11 Jul 2011, 5:45 pm

the points may have closed up as well or be burnt have a look

wolfgang54 · 11 Jul 2011, 5:51 pm

vw54 wrote:the points may have closed up as well or be burnt have a look

thanks, checked that, all in pristine condition. de scaled dizzy as well, a little bit of crud on posts but still ok.