Carby Problems.

[dull]

G'day, i've got a few problems with my carby.
It's a Stock (32" mongrels, 6.5 reduction gears) 1.3ltr WT 95mdl Suzuki Sierra, with the asisin Carby

This is my problem:
I went through a puddle and ingested some water through the air filter/box. (Snorkel is now on the list before I go wheeling again)

Went home, changed the plugs/leads and put a new air filter in.

Seemed to run fine for a day, then it wouldn't idle, and you have to have your foot flat to the floor and dump the clutch to get the car moving from a red light, then once i'm moving I only have full throttle or nothing at all. If I put the clutch in while rolling, it stalls.

Took it to a mechanic and he claims he cleaned out the carby, found some water and crud in it. He told me he didn't want to start pulling it apart as it means a rebuild of the carby. Also mentioned he put an additive in that breaks down water.

So I picked it up on saturday (very excited), drove it no more than 2km before the exact same problems started. It's as if the mechanic didn't do anything at all.

Rang the mechanic, he wasn't in, spoke to the bloke who did the work. He told me to take the airfilter off, hold a rag over the carby and rev it so the secondary's open, and that "might" fix it. Haven't had a chance to do this yet, but was just wanting to know if anyone else has had a similar problem and been able to fix it with out having to do a full rebuild of the carby.

Any help with this would be great. I've missed to many trips to paddy's already!

Sorry for the novel.

Cheers
Dan.

[brad-chevlux]

%90 of the time you can get the top off them with out breaking the gasket.

you'll probably find there is some water in the floate bowl.

we do a complete rebuild with vacuum advance unit for $395.
just to gie you a comparison price.

[dull]

Righto, so if I take it apart and do break the gasket, then it's rebuild time I'm guessing?

Cheers

[mrw82]

also check your fuel filter to see if theres any water sitting in it. it is likely you got water in the fuel tank and it doesn't matter how many times you clean the carby you will keep having problems until you drain and flush the tank and lines.

one good way of checking this is to disconnect the fuel suction hose from the pump, run the car until it stalls (so you know theres no crap fuel in it still, youd be suprised how long it will keep running)

then hook up a hose into a drum of FRESH fuel to the fuel pump and start the car. see if it runs any better.
but the first thing is to check the filter, you will see water separated to the bottom.

[brad-chevlux]

Righto, so if I take it apart and do break the gasket, then it's rebuild time I'm guessing?

Cheers

you should be able to buy a feul miser 'carby kit' that will have all the gaskets in it. would be around $50. if you break a gasket you be able to replace it. just be carfull of getting a rebuild from a regular mechanic, most of them just give them a quick spray with some cary cleaner and put new gaskets in. this is not a rebuild. What ever you do, don't buy a Goss carby kit.

i specialise in carbies, with out giving away any secrets, there is alot more involved in a rebuild than that.


the comments about water in the tank, very good advice, i gave mine on the assumption that the mechanic would have already checked that. It would be to double check it your self.

[david123]

Woudn't pourin in 5 liters of ethanol into the tank diffuse all, if any water.

[mrw82]

ethanol when added to water becomes very acidic. which is why I dont use E10 in any of my cars. draining the tank is the only option if theres any substantial amount of water in there, besides the tank will be going rusty on the inside, that needs to be cleaned out otherwise it will flake and clog the filter.

[want33s]

Every couple of months I put a litre of metho in a full tank of petrol to absorb any water that may have gotten in there In all my cars.
Always have done this and never had a drama.
Jas.

[Pyrotech]

im with Jas, on this one, i (when i remember too) put a litre of metho in once every few months,
but im over carby issues so going EFI, then eventually LPG, no water there

[christover1]

some zooks have a drain hole in the tank. Very easy to drain off a few litres every now and then.

It will be crud/water in the fuel tank.
It settles overnight.
You get a bit of driving before it all gets stirred up.
Then it blocks up everything again.

I thoroughly cleaned my tank, and all lines, fitted an inline efi filter (much better quality) fitted a filter in after fuel pump, (older fuel pumps can put bits into carby) put in a new fuel pump, then fitted a minor carby kit thru it. Put the metho in occassionaly. Have never had a problem since.

I keep out of deeper holes now too.

The idle jet is very small, and thus can't handle any crud at all. Mine wont even idle on the denser fuels.


christover

[dull]

Right, well i've taken all of this onboard, took it back to the mechanic and he is going to pull down the carby and clean it all.

He put in a filter before the fuel pump, but i think i may drain the tank when it comes back, fill it up and drop a litre of metho in.

This is going to sound like a stupid question, but where does the water get into the tank?

Thanks for all of the help so far, if anyone else has anything to add please do.

Cheers

[christover1]

Petrol station tanks, delivery trucks, depots are not ideal, water gets in. In most cars it has less effect, but zooks have tiny tiny idle jets.

Mine had a hairline fracture in the tank, which never showed signs of leaking, but when bottomed out in mud, it would shovel it in.

In deeper bog holes it can get in thru filler cap, carbon cannister (I put a breather on mine, too).
When warm part hit cold water, suction is pretty strong.