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Jul 21st, 2025 | | | | Joined: Sep 2010 Posts: 252 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 252 | Stalls when warmed up and starts again after 5 minutes. I thought it was gunk in the fuel system so have replaced the tank and filter and cleaned everything up. Still the same problem.
It acts like a fuel problem but, I think I have ruled that out.
We think it is a '55 235 engine with Rochester B carb.
Any help is much appreciated. | | | | | Joined: Jul 2012 Posts: 83 Shop Shark | | Shop Shark Joined: Jul 2012 Posts: 83 | how about the ignition? Do you have spark when it dies? What about fuel pressure?
1953 1 ton panel
| | | | | Joined: Oct 2007 Posts: 231 Shop Shark | | Shop Shark Joined: Oct 2007 Posts: 231 | Could it be the fuel pump? my 350 had sort of the same symptoms and i replaced the mechanical fuel pump and it fixed it. Not sure if that makes sense for your issue just a thought and something i ran into. | | | | | Joined: Apr 2005 Posts: 1,971 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,971 | How long do you leave the choke on? I try to get off mine quickly. | | | | | Joined: Sep 2010 Posts: 252 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 252 | I will get a helper and check the fuel delivery on weekend and also check for spark when it dies.
Thanks. At least I know where to start. | | | | | Joined: Sep 2010 Posts: 695 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 695 | You might also take a look at your gas lines in case you have some old "breathing" rubber... It could affect your fuel pump delivery.
Jerry | | | | | Joined: Sep 2010 Posts: 252 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 252 | It did it again tonight.
The fuel pump and fuel filter were both full. I could hear it getting getting to die - which it did.
I don't think it can be fuel.
So, on to ignition.
I will try another post under "coils".
Thanks for all your advice. This is really getting frustrating!!
Peter | | | | | Joined: Mar 2004 Posts: 6,189 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,189 | Have you put a fuel pressure gauge in the line at the carb? Just because you have gas doesn't mean you have flow/pressure. The gauges are pretty cheap...about $10. About 6-7 pounds is normal. Are you sure the needle seat valve isn't sticking closed? The bowl fills up on start up and the valve sticks, engine runs out of gas and dies... Before you take anything apart run the truck again and when it stalls grab the coil and see if it's HOT...If it's to hot to hold then it's bad. Mike B  | | | | | Joined: Sep 2010 Posts: 252 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 252 | It seems like it was the perfect storm.
After sitting for 2 years it appears I had several problems all at once.
Took the carb apart and found the needle value was stuck, rebuilt it and ran much better - for a about 20 minutes.
Replaced the plugs and cap and rotor and noticed a big difference in performance - until I hit 30 minutes.
Replaced the coil and ta-da!
Thanks for all your suggestions. You all were right!! | | |
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