Re: 4GC Rochester Carb for 1955
Posted by Brian A. On 2011/10/29 1:36:33
Quote:
I'm chiming in a little late here but...
The new fuel blends definitely have an effect on older parts. See how it shrunk the cup seal on my accelerator pump plunger? I rebuilt my carb and it ran great for about 3 days then wouldn't start. A quick inspection revealed the accelerator pump wasn't pumping. These blended fuels will do that to your old parts. If its not to late, you might want to rebuild your carb yourself. If it was working fine, except for the leaks the new gaskets is what it most likely needs. The 4GC carbs are very simple. Take it apart, match the old gaskets to the new ones and re-assemble. Fortunately, where I live, there are 2 gas stations that sell non-blended gas. It cost more but the car runs so much better and I think the extra mpg's pay for it.
Brian
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BigKev wrote:
Wonder if the ethanol in the newer fuel blends is eating the gaskets if the carbs had a older composition gasket kit in them.
I'm chiming in a little late here but...
The new fuel blends definitely have an effect on older parts. See how it shrunk the cup seal on my accelerator pump plunger? I rebuilt my carb and it ran great for about 3 days then wouldn't start. A quick inspection revealed the accelerator pump wasn't pumping. These blended fuels will do that to your old parts. If its not to late, you might want to rebuild your carb yourself. If it was working fine, except for the leaks the new gaskets is what it most likely needs. The 4GC carbs are very simple. Take it apart, match the old gaskets to the new ones and re-assemble. Fortunately, where I live, there are 2 gas stations that sell non-blended gas. It cost more but the car runs so much better and I think the extra mpg's pay for it.
Brian
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