Team MightyBoy

Ok guys i need help, i work about 80 or so km from where i live and start at bout midnight on the way to work bout 30 or so minutes into the drive my MB starts playing up spluttering and really struggling to make power, is my carbie freezing or is it something else? and if so how do i fix it because i keep having to swap the sparkie cables over to "clean it) and its getting real annoying

Sounds like the correct diagnosis to me.

When I had the problem, it did like you say. However, it would idle.
That's because the venturi is what froze, but the idle circuit worked.

Fitting the exhaust/air cleaner pipe fixed the problem.

Until I worked out exactly what was wrong, I had to let the car sit for about 2-3 mins. This allowed the carby to thaw, and would then work for another 20 mins of driving.
Driving home caused no problems at all.

Any recommendation on how to stop the bloody thing doing it? i was nearly thinking of buying a turbo bag to put over it!!!

If you have to swap the plugs to clean it I would say you have dirt and grit circulating the float bowl and clogging the jets.

How do i clean it out?

Remove, rebuild, refit.

ok lol where would i get a rebuild kit from? or can i just use existing parts?

Fuel Miser rebuild kits are available from most auto parts retailers for around $80.

does changinf the leads help? or does it just give the carby time to thaw?
try the preheat tube option (<$15) first to see if that helps - found out about this problem years ago with my first MB. had rebuilt it and was taking it in for a roadworthy. was a very cold morning -4 and can died completely about 50 metres from mechanics. i had to push it the rest of the way, very embarassing but the diagnosis was a very simple 1. havent had any trouble since then, and the preheat tube was a roadworthy requirement here in vic apparently.

yeah i now have a heat raiser pipe, will test it out 2nite when i go to work!! Cheers for the help guys!

My F5a in the boy used to freeze the carby without having the preheat pipe on, i also found that out the hard way. I found that the F8b produced enough extra engine bay heat that it didn't seem to freeze up without the pipe on. I was & still am running the std F5a radiator.

The worst freezing carby i have seen, on a veteran can, ie a car built before 1918, within 2 mins of starting the engine, the dodge had a lump of ice where the carby should have been! Couldn't find the carby under all the ice. It wasn't even in winter, it was a November morning......

Cheers

ToranaGuy

EVL_801 wrote:yeah i now have a heat raiser pipe, will test it out 2nite when i go to work!! Cheers for the help guys!

Well, what's the result?

heat raiser pipe works fine but brayden was right there was crap in the carby, all fixed now and running like a dream