Thread: 1977 suffix D Fuel pouring from Carbs

Modern electronic fuel pumps don't stop when you plug the hose. Only SU type pumps do that. Take the carbies off, clean the float chambers out, check the needle and seat, fit a new fuel filter to the supply hose.

Originally Posted by My First Range Rover

Fuel discharging from brass jet housing under both carbs.
Removed fuel line. Blocked open end. Pump will not turn off with back pressure.

The brass fitting at the bottom of the carbs has an O ring on it that perishes if left to sit. I had this same issue on my V8 when bringing it back to life. The fitting unscrews and the o rings are nothing special.

The pump runs continuously and any excess fuel at the carbies is feed back to the tank via a return fuel line so make sure it is in place and is not blocked.

Cheers

Garry

The brass fittings with the o-ring.
They are main jets?
Is the number of turns up or down relevant to the tuning? I had considered float valve open, but thought it unusual or wrong for the pump to run continuously.
Thanks for the current info.

Normal. It's either sat dry for a while, or run extensively on lpg.

Mine had to have the bowls primed a couple of times through the day and left overnight and the seals took up again....... until you swiched back to lpg for several weeks, or left it standing unused for too long.

Originally Posted by My First Range Rover

The brass fittings with the o-ring.
They are main jets?
Is the number of turns up or down relevant to the tuning? I had considered float valve open, but thought it unusual or wrong for the pump to run continuously.
Thanks for the current info.

It has been a long long time since I did mine so I may be WRONG but I do recall the bottom plug is like a sump plug and it has the O ring on it that fails. The jet fittings remain in place when the bottom plug is removed but as I said I just cannot recall.

You need advice from someone who is more upto date than I am.

Garry

They are main jets?

Yes they are and AFAIR ( from 15 years ago) there are two o rings.
Count the number of turns out and return them to the same position.
There are tuning guides for Strombergs on the web. google one up and follow the guide.
You should put kits in both carbs.

Regards Philip A

G`day ,

on the bottom where the leak is you`ll see 2 hex shapes , one larger than the other .

The large one can be unscrewed and you can replace the o ring which will be leaking and nothing will be upset .

The small one which will come out with the large one being unscrewed is for the main and if not disturbed will be as it was .

There are two more o rings to be found that require that the small is removed from the large but they will not usually cause an external leak in the manner you describe , if you remove the small from the large there is a requirement to count the turns to be as it was .

Peter

Originally Posted by garrycol

It has been a long long time since I did mine so I may be WRONG but I do recall the bottom plug is like a sump plug and it has the O ring on it that fails. The jet fittings remain in place when the bottom plug is removed but as I said I just cannot recall.

Garry

Originally Posted by PLR

G`day ,

on the bottom where the leak is you`ll see 2 hex shapes , one larger than the other .

The large one can be unscrewed and you can replace the o ring which will be leaking and nothing will be upset .

The small one which will come out with the large one being unscrewed is for the main and if not disturbed will be as it was .

There are two more o rings to be found that require that the small is removed from the large but they will not usually cause an external leak in the manner you describe , if you remove the small from the large there is a requirement to count the turns to be as it was .

Peter

That is what I sort of remembered.

Thanks

Garry