Magna V65 Wont Stay Running

[Nick56289]

I swapped out the ignitors, the pulse generators, and the reg/rect.  It still has the same problem.

I checked the compression and each cylinder reads 180 psi.

I rode it for about a mile until it died.  I checked for spark and all four cylinders had strong spark.  I checked the float bowls for fuel and the carburetor closest to the brake lever was dry.

Does anyone know what could cause this?

[Nick56289]

Is it a common problem for the rightmost carburetor to be dry?

[Jigger]

From your discription now. Sounds like your going to have to pull the carb off. You might have a small peice of sand or dirt that is partially blocking the float needle vavle. It allows a small amount of fuel to enter the bowl and fill. But once it is running the bowl runs dry.

[Nick56289]

That sounds likely.  I ordered new valve needles and seats, so Ill let you know if that is the problem.

Thanks again for all your help guys.

[Greg Cothern]

slow speed jets are clogged, sounds to me.

[ggeezer]

Nick,
From the symptoms you are describing I'll bet your fuel filter is partially plugged or the fuel pump isn't working up to capacity. Sounds like a restricted fuel flow problem. The bike will run at slow speed but dies for lack of fuel when driven hard. When you slow down again or stop with the key on, the restricted flow has a chance to catch up again.
To test this, make a small fuel tank out of a plastic oil bottle or even a pop bottle ( make sure to vent the bottle). Connect the hose to the carb at the connector on the left side of the engine. Plug the line from the fuel pump.
Tie the fuel bottle up as high on the bike as possible so that you have a gravity feed, ride the bike to see if it quits with this set-up. If it continues to run, then you have a filter or fuel pump problem.
I have an '83 V-65 and have had this problem.

Orv. (new guy)

[ggeezer]

Hi Terry,
You might find this interesting:
http://popvssoda.com:2998/
Now back to Magnas. I need float-bowl gaskets ("O") rings. does anyone know the number size of the standard "O" ring that will fit the V-65's float-bowls?

Orv.

[Nick56289]

Yep the auxillary fuel tank literally had handfulls of rust sediment at the bottom.  This caused a massive restriction in the fuel flow.  Cleaned the rust out of both tanks, sealed them, new fuel lines and fuel filter.

Bike runs awesome now.

[Nick56289]

I rebuilt the rear caliper this morning since it was sort of seized up.

Took it out for a ride out on some canyon roads behind my house.  Power delivery is smooth and strong and the bike handles better than I thought it would.

I love V65s!  Thanks for the help guys.

[hootmon]

I rebuilt the rear caliper this morning since it was sort of seized up.

Took it out for a ride out on some canyon roads behind my house.  Power delivery is smooth and strong and the bike handles better than I thought it would.

I love V65s!  Thanks for the help guys.

I don't know if anyone brought it up, but make sure the fork brace has been replaced.. they are known to break and cause accidents..

[HohltMagna700]

Sounds like could be bad ignition boxes. (Ignitor boxes)

http://www.advrider.com/forums/showthread.php?t=437569

Im experiencing a similar issue w/ my 1986 magna 700. Im wondering if there is a way to test the ignitor box?