Dell 40 that stick and flood.

So....in what have you done you your Bay today, I posted pictures of my Dell'ectomy.

Here are the jobbers.


Now I removed the top plate last night, the needle valve is shiny on the tip, but I don't see major wear that would indicate why the carb sticks open. To recap, if the bowls are empty then the carb's reservoir just keeps filling up, much like a toilet cistern would if the water doesn't shut off properly. Now this isn't good since the excess fuel causes flooding and can get into the bores and mix with the oil. The engine misfires on the flooded side and my furl pressure gauge registers low.

Here's an image of the float bowls. See any differences between right and left hand side bowls?

 

I put the float back on and tried the old chalk trick, this is after filing off the flashing on the plastic float and smoothing off the corner of the float. I did check I haven't gone too far as the float doesn't seem to leak in my kitchen sink.

Obviously, a tad more material needs to come off.

 

Have you tried a new pair of float valves? The wear only needs to be minute for them to leak.

 

They're on order, thanks

 

i can't help at all with your needle valves etc, but........

Ensure the long threaded things that attach from the carb to the filters are very secure!

One of mine fell off, stuck the carb open, bus was accelerating on its own down the M1. After i switched the engine off the little bugger fell into the engine.

That was when i found out i should have had velocity stacks on!

 

Give 'em a go. Should all work well. I'd be tempted to strip your Dells completely and give them a good blow-through/scrub. Lots of muck in there, I bet

 

I plan to clean the jets etc but no more at this stage until the flooding problem is resolved, changing too many things in one go is usually where I get it all Pete Tong.

 

Dells rarely give any trouble other than worn needle valves and spindle bearings.. bet the new needles will have it purring again.

 

Dells rarely give any trouble other than worn needle valves and spindle bearings.. bet the new needles will have it purring again.

 

Dells rarely give any trouble other than worn needle valves and spindle bearings.. bet the new needles will have it purring again.

 

Could you repeat that?

 

Give 'em a scrub!

 

An an encouragement...my eBay Dell 40s looked super clean when I got them (and smelt pleasantly of oil). Different story when I took them apart - they were super-grubby inside. Surprising the amount of muck that comes out.

 

Fecking forum...