Commer not starting - new carb any suggestions

D

dailewis

0
Morning commervanfans,

I have a problem which I hope someone can help with.

My Commer broke down 7 months ago and has been standing since due to a knackered carb.

I have recently fitted a new weber carb (replacement from speedy spares.

I have tried and tried to start it but to no avail.

I have checked the following:

1. Replaced the spark plugs with new ones.
2. Cleaner rotor arm and contacts in dizzy cap
3. Checked for a spark and there is one.


It is firing but just will not run.

Now here are the areas that I think may be causing the problem, but I'm not 100%.

1. The new carburretor came with 2 gaskets exactly the same size and I have fitted them both on, one on top of the other. Could the carburretor be too high off the inlet manifold?

2. The carburretor has elongated holes where the fixing bolts go through. This means that it can be slid from side to side. Could it be posible the hole at the bottom of the carburettor is not inline with the hole going into the manifold?

3. The van is parked sideways on, on a slope so the manifold is pointing down the slope (passenger side at the lowest point, drivers side at the highest point). Therefore, fuel is running out of the maifold drain pipe because it is not being burnt as the engine won't run. Is it possible that all the fuel is draining out of the drain pipe and I have a classic case of fuel starvation?

you may suggest that I move the van onto the flat and try it. This would be very easy if the brakes weren't stuck on due to 7months of inactivity!!!

If moving it onto the flat is the only option then I guess I will have to try and find a way of towing it although currently I can't find a tow hook or anywhere to attach a rope without it bending bodywork whilst being pulled.

Any suggestions would be gratefully received as I want to hear the old girl spring into life again!

Cheers

Dave
 
Hey dave is the fuel reaching the carb?

The issue with yori (which had stood for close to 2 years) was some additional "gadget" on the fuel line that served only to stop the flow of fuel; once taken out she fired and ran.

My 2p :D
 
have you tried puttting a bit of petrol down the throat of the carberetor if it has a spark it should fire for a couple of seconds, also can you see fuel in the glass bowl on the fuel pump.

I have also known people to use easy start to help an engine to start but not to mucch a little as you are cranking the engine. I do not like to this my self but other people might have an idear

keep the old girls running better for the environment
roadrun3.jpg
 
My camper has a bad habit of not starting if it is parked with one side up on the pavement [xx(] Put it flat on the road and off she goes again. must mess up the float level, as they are temperamental.
 
Hi All,

Thanks for your replies. There is definitely fuel getting through the carb and into the manifold as it is draining out of the inlet manifold drain pipe onto the floor.

I will try some petrol down the carb throat and see if that works.

I think looking at one of the replies that maybe being parked sideways on a slope is causing the problem as all the fuel is coming out of the inlet manifold drain pipe. I guess this is more likely to happen as the engine is cold and the fuel will be condensing on the inside of the manifold and running to the lowest point - right where the drain pipe is.

Dave
 
if you jack up each wheel that is tight and give the area between the studs a short sharp whack with a hammer this is normally enough to free the brakes, especially commer ones as they are very agricultural. this can be done on the floor if jacking is dangerous but just wont know when theyve freed off. my 2p :) best of luck
 
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