Re: Help with car
Posted by: Old timer
Date: August 21, 2015 01:17PM
We clean our pilot when we start having trouble-if it isn't broken, don't fix it! You will notice at times that the pilot will become weaker-both from sound and from the way it looks-if there is no improvement by opening the pilot fuel tap more, the pilot needs cleaning.
Fuel shut of valve-there is adjuster in the form of a gland on the steam side of the valve, if you screw this up tighter, the pressure at which the fire shuts of will increase.
To clean the vapouriser tube, when cold, remove jets and place a tray in front of the venturis and the main jets, and, with jets removed, open the main or starter fuel valve to blow fuel through and thus the carbon out. The wire can be cleaned with a wire brush. Following this procedure, the jets may block up a couple of times on the next run out-there is often small bits of carbon dislodged during this procedure which get left in the vapouriser and carried through with the next on rush of fuel.
Alternatively, you could fit a steam enema, this is a steam line that goes from the boiler to the fuel entry point of the vapouriser, and when the tap is opened cleans the vapouriser out with steam. You will need to follow the tray procedure as above. It is important to have two taps fitted in the line, as if steam leaks into the vapouriser, carbon production will increase. Fit one tap either right near the boiler or on the bulkhead, and one right where you fit your enema steam line into the vapouriser. If there is not one on the latter, or a non-return valve, the line will fill with fuel right up to the bulkhead valve, and pulsing of the fire occur.
I hope this makes some sense!