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| | | | Joined: Nov 2015 Posts: 19 New Guy | | New Guy Joined: Nov 2015 Posts: 19 | Just recently changed my 1963 230 c10 to the twin 32/36 carbs purchased from Langdon Stovebolts, everything is fine until i have driven about 30 miles then its starts to splutter and dies, i reduce the speed from 50/55 down to about 40 and it will pick up again, the more miles i do the worse it gets, i can even be doing 25/30 and suddenly its cuts out but taking my foot of the accelerator, then putting it gradually down again it will pick up but sometimes splutters, going to do a 700 mile trip in July and i dont want to be stopping and starting | | | | | Joined: Sep 2011 Posts: 2,951 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 2,951 | Sounds like one of these issues.
1. the fuel pump isn't keeping up with the demand
2. vacuum build up inside the tank - make sure the fuel tank is vented or use a vented cap
3. the fuel bowl float needs adjustment.
I suspect #1 or #2 is the problem. It take a while for the fuel tank to build up vacuum. Drive it until it sputters and then stop and pop off the fuel tank cap. If you hear suction then you may have found your problem. Especially true if you can then drive it again without sputtering for another 30 minutes.
Let's see if others agree. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Agree with pump or tank. Drive with cap off to test. Sometimes you think the cap is vented but it's malfunctioning. Don't two carbs take more pump volume than stock pump? Agree it's a fuel delivery problem so...lots of other stuff besides a tank vacuum lock or pump. 4. Dirty filters 5. Pick up sock clogged 6. Out of gas 7. (no.3) Carb adjustment of all kinds, float level, etc 8. Bad rubber hose somewhere 9. Manifold Vac leak * Timing and possibly electrical issues. The key is the slow progression which points to Fuel Delivery. Lots of things between tank and venturi. Test and troubleshoot and call me in the morning 
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | When I brought my 55 2-ton home, I cleaned the fuel system out and put new gas in it. Everything was fine for a week or two then the rubber line coming out of the tank swelled up inside and would do the same thing. If I let it set for a bit, it would fire right back up, then die after a while, you may have something similar going on, especially if you are running dual carbs and pulling more fuel flow than before. | | | | | Joined: Apr 2013 Posts: 67 Shop Shark | | Shop Shark Joined: Apr 2013 Posts: 67 | Hi-
Consider pulling the sending unit: the intake may have a screen filter which could be partly clogged causing Intermittent fuel starving.
RA
| | | | | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | easy fix, call Tom, he will help you
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | | | | Joined: Nov 2015 Posts: 19 New Guy | | New Guy Joined: Nov 2015 Posts: 19 | Gents,
I checked the filler cap and that is vented.
Checked the fuel lines and as a precaution i changed them all.
Last night removed the sender unit and guess what clogged up didnt have time to take it out for a run will try tonight and update you all tomorrow.
Many thanks | | |
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