HiAce auto choke problem (Petrol NZ '95 2RZ engine carb not EFI)

[F5 Dave]

Ahh the man. Ripper, I'll give that a try & try not to screw it up.

Hmm, that hose bottom left going into carb, will that be it?


Its just turned over 300,000k so its barely run in.

Had all the rust cut out & its going well. No chance of affording a newun anyways.


aww isn't she preetty

Thanks Motu, cynicism included

[F5 Dave]

Well I'm confuzeled again.

Here's the autochoke. Flap seems to move easily without binding (within its freeplay) over the course of fooling around a couple of hours the flap eventually closed the choke. So it has no coolant I can see but (note 2nd picture: reflection from GS1100 mirror) has a wire going to it. Also there is another diaphram thingy next to it. Not sure of its purpose.

[F5 Dave]

So then there is this little guy Another wire from same loom as the autochoke goes to this little thing. Not sure what it is but the hose from it was perished a small hole, so I cut it back & refitted it. Traced it to under the van. Maybe a drain, but pretty elaborate thingy.

[F5 Dave]

So at this stage I decided I wasn't sure what to do, so having repaired the hose I squirted some lube on outside linkages in blind optimism & changed the oil & fitted a seat cover (seat was ripping, don't smirk). By now the choke flap was fully closed.

This morning it was a bit cold blooded to start & kept stalling if I didn't have the foot a little on the gas so I warmed it up a little in the driveway before setting off. I'm thinking along with the auto choke there is also a additional idle-up in cold. Drove fine once underway.

[unstuck]

One looks like the fuel cut solenoid , the one next to the drain looking thingy, which looks like some kind of purge valve/tank for the emission control? Did you clean out the waterways in the auto choke housing? Sounds like a problem in thew choke curcuit , otherwise it probably wouldnt run ok when hot.

[unstuck]

The other photo at the top with the red wire going into it looks like the choke spring housing from that pic.

[F5 Dave]

So picture 1 is the autochoke & pic 2 is the back of the autochoke (reflected in mirror) with the wire going into it is what I thought.


Couldn't see anything with a water hose going into it.

[Motu]

Better pictures helps....one of the reasons why I seldom help people online. Now you got me pissed off.

So it's got an electric choke, not common on a late model carb, they were a thing of the '60's and '70's - they don't have a clue how hot the engine is, so will give full choke on a warm engine, not good for emissions so they stopped using them. It should close the choke flap cold, then check it has power, and that when it has power it will slowly open the flap as it warms up.

[blackdog]

Why fuck around?

http://www.trademe.co.nz/motors/car-...-607258485.htm

Don't know the guy, just the first ad I pulled up. Shop around and kiss yer carb worries goodbye.

[ducatilover]

I can't see see pics because we ran out of interwebs here, but an extra bit with a wire would be an anti dieseling solenoid thingymabob.
Autochoke like that should be controlled by either a typical temp probe in the cooling system, the temp probe acts as, on inline with the earth in the circuit to control the closing of teh choke plates.
Or, unlikely as it's modernish, a temperature operated vacuum siwtchy thing like all the old 'murkin stuffs I've played with.

Only other idle up type thing it'd need would be an enrichment pump, I don't think they ran an air bypass on them

So yeh, a twin choke Weber eh?

[F5 Dave]

Thanks BD the thing a van really needs is more power. Ok sometimes but not often. I've just been re shaping the chamber of an air cooled head that is getting a water jacket on my poor old 40s lathe with some ground tools. I can get my head around that, but this is doing me head in. Pun begrudgingly intended.

so I think the choke part is working, but there may be more that is supposed to be happening here. Just what I don't know.

[F5 Dave]

I can't see see pics because we ran out of interwebs here, but an extra bit with a wire would be an anti dieseling solenoid thingymabob.
Autochoke like that should be controlled by either a typical temp probe in the cooling system, the temp probe acts as, on inline with the earth in the circuit to control the closing of teh choke plates.
Or, unlikely as it's modernish, a temperature operated vacuum siwtchy thing like all the old 'murkin stuffs I've played with.

Only other idle up type thing it'd need would be an enrichment pump, I don't think they ran an air bypass on them

So yeh, a twin choke Weber eh?

Ah thanks I think. Certainly don't want to spend any longer turning this into a project, I have enough bike ones I'm struggling to find time for.

[ducatilover]

Just disconnect the choke? Give it a few pumps before starting in the morning and let it warm up a wee bit.

[F5 Dave]

Well that's kinda what I'm doing if it doesn't start up revving enough, but I'm always running late for work plus the wife has to drive it on Saturdays so hard to instill the idea.

[ducatilover]

One thing I would check is the choke plates aren't binding on the bores, otherwise it'd be a job I'd have to look at
I'll sell you a fantastic hammer though