Thread: oil for carbes on 3.5 v8

we used to use automatic transmission fluid.
i think you had to have enough oil in them when you dropped the plunger
in it would go in about half way before meeting resistance from the oil.
use a syringe or oilcan as they dont need much oil in them. if you over fill
them just wipe the plunger and drop it in again. keep doing this till the correct level is reached.

if there is no oil in the carbies it will usually cause a back fire when you blip the throttle.

I used to put engine oil in mine, if Defenderzook was using trans oil satisfactorily I would say the grade is not that important. Just make sure there is oil in them!


Bushie

I tryed a few and since long time I use 10W40 engine oil. Grade is not too important, but don't try gear oil - viscosity is too high.
Fill them 12 mm below top edge level.
adam

this takes me back a few yrs .......... [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]
looking for a old rangie
found 1 it was a 77 rangie
took for a test drive
went like a bag of crap but we knew about the oil levels in the carbs
so will ut check them out and yes low on oil

went back to the guy
mate what a pile of crap we say
offered him a lot less than asking price ........ [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img] [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]
next day phone call ok its yours
filled up the carbs off she went and did so for a few yrs
great car

OK,
The good guts book states to use the engine oil.
This varies according to the ambient temp.
For -10 to 30+ use 15W40
For 0 to 30+ use 20W40.

The viscosity of the oil does affect the performance of the carb.
The carbs are a Constant Vacuum type, and have no accelerator pump.
The thicker the oil, the more resistance for the piston to rise, and thus a richer "accelerator pump".

The correct level is achieved when the plunger is inserted and resistance is felt, the threaded section is protruding 6mm.

Use a syringe with a hose attached (old vacuum line).
This allows you to get the oil to go into the dashpot.

Check it regularly.
High consumption means a faulty carb, and requires a new diaphragm.

<div class='quotetop'>QUOTE</div><div class='quotemain'>Check it regularly.
High consumption means a faulty carb, and requires a new diaphragm.[/b][/quote]

Easy to check the diapragms - unscrew the piston but leave it in place give the throttle a blip (with the engine running) the pistons should lift up, if they dont then the diapragm has a hole in it and needs replacing (5min job).

Mind you it will already be running like a hairy dog [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img]


Bushie

you could always drop a td5 in it and forget about your carby problems



i got a td5 and have never had a carby problem :!: :!: [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]

I have treid engine oil and atf and while they do seem to make a bit of difference I find that it would run out pretty quick.

I don't use any now and it runs the best it ever has. Starts first go every time, well nearly every time.