Triumphrat

kawtoy

Still working on the 73 Bonnie that sat for 20 years. Carbs have been cleaned. Still not getting any fuel to the cylinders. When I twist the throttle while looking into the carb, where should I see the fuel spitting out? Shoud the plugs be getting wet? Thanks

donnydildo

I think your jets must be cleaned too, or there's no gas in yer tank!? :hammer:

OzBloke

Kawtoy,

Need a little more information.

Do you have a workshop manual? - if not, time to spend some money!.

Have you got Amal carbs?

Are you expecting to see a jet of fuel pumped out of the carb venturi when you open the throttle (like on a car carby?). Amals don't work that way - they draw the fuel up through the jets using the venturi effect of air passing through the body of the carb from the filters to the intake manifold.

If your plugs are wet, is it oil or fuel? - smell them, or see if it evaporates after a few minutes in open air. If it's fuel, you either have a problem with spark or timing, or your compression is way down. Do a compression test - easiest way is to try to hold your thumb over the spark plug hole while kicking it over. Both plugs out, obviously. If compression is OK, you will not be able to stop the compressed gas from escaping the cylinder. Or you could use a compression tester if you have one.

If it's oil on the plugs, you've got a bit of a larger problem which we can discuss later.

Let us know the answers to the above, and we can work from there. A manual is a must in my opinion.

Pete



[ This message was edited by: OzBloke on 2006-04-10 17:51 ]

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KADUTZ

when you tickle the carbs is there fuel into the intake manifold or on the carb "floor"?
if you are getting the ticklers to "pea" and no fuel to plug /cylinder
1 carbs are still pluged
2 intake valves not opening
3 both there can be no other explanition
When you have throttle WFO and tickle carbs where do YOU
see fuel?
If you twist the carbs WFO without the bike running no fuel will flow.
Some probably will flow if you kick over without running and WFO but not a smart thing to do.
The Amal is a very simple carb (as is Triumph a simple bike)


[ This message was edited by: KADUTZ on 2006-04-10 19:29 ]

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kawtoy

A few answers.
I do have a manual. 2 actually. Haynes and Clymer plus original manuals.
Yes they are Amal carbs. Stamped "930" on the bodies. The originals have been replaced and I have the Amal boxes that the "new" carbs came in. This was over 20 years ago of course.
I was expecting to see a squirt of fuel. Again this is my first Brit bike after having worked on many Jap bikes. Most of their carbs actually swuirt a jet of fuel when the throttle is twisted. Easy to flood the bike that way.
My plugs are bone dry, no oil and no gas.
Compression was 145lb on both cyl after about 4 kicks.
Carbs are apart right now and off the bike. sprayed all passenges with WD40 and about 60psi of air. Used a single srand of copper wire to clean the small holes on the floor of the carb. Everything seemed to be clean but who knows. Thanks

texspeed

Is fuel in the bowls? Petcocks "on" with good flow? Removed the bowl plugs to see if any fuel pours out?

A simple process:

1) clean fuel in clean tank...check
2) good petcocks open and fuel passing...check
3) fuel flowing through lines/screens/filters....check
4) fuel filling bowls, floats floating in fuel and needle/seat working properly to prevent overflow...check

If you've cleaned and adjusted the carbs as you state and can verify that the needle and seats in both carbs are'nt sticking than your problem lies upstream.....both carbs miraculously having petered out at the same time?? Never!.....I suspect petcocks..... :hammer:

[ This message was edited by: texspeed on 2006-04-10 20:26 ]

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KADUTZ

ok do kee
you didnt answer any question I asked you.
As I told a 30 year Jap bike mechanic (last week)just because u work on yamakawa honzukis dont mean you know squat bout Brit Bikes or HFD's.
I am reading what you wrote in the first posting and filtering out the unnecessary stuff form the last one.
Look at my last posting your answers are there
Any body have any other suggestions ?

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kawtoy

Sorry KADITZ. The carbs are off the bike right now so I can't tell where or where I am not getting fuel. I will check tomorrow. And like I have stated many times before in my previous threads, I admit I know nothing about Brit bikes. That is why I am here asking questions. Bike forums are not places for guys to show off to each other what they know. They are for asking and answering questions. What I don't know, someone else will. Hopefully I will be able some questions down the road. I have bult many Jap bikes from the ground up including my KZ1000. I just felt it was time to see what a British bike is like. I will never stop riding my KZ. It has insane power, about 120hp at the wheel after many modifications. That is the bullet, the Bonnie will be the wife on the back bike. I also have some CB350's for putting around time for good gas mileage. You can never have too many bikes, one for every situation. Thanks for the help. Hope you guys won't get sick of my questions. I will get the hang of it eventually.

OzBloke

IMHO, the way forward is:

- put the carbs back together with new gaskets.
- mount them on the engine, checking seals.
- check balance hose (rubber hose) between intake blocks is in good condition and sealed.
- check static timing, points
- check for good spark with plugs out.
- while kicking over, check for oil return flow - open oil filler cap between tank and seat and watch oil pump through as you kick.
- put plugs back in
- tickle till you see fuel come out at the tickler
- ignition on.
- twist thottle open about one third
- kick start.

Try it and let us know.

Pete

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GrandPaulZ

If you ask me, it's all coming back to the intake valves not opening; thus, while there is fuel in the clean carb, there is no fuel in the combustion chambers.

Re-adjust ALL valves, per the book. CAREFULLY.

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