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| | | | Joined: Mar 2001 Posts: 20 Junior Member | | Junior Member Joined: Mar 2001 Posts: 20 | My 52 3/4 ton pick up has a 235 with a rochester B carb. I have had very little problem with the carb until recently. The truck set up for about 3 months and when I finished my body work on it, it started the first time. Here, however is my new problem. I have always used the choke to start a cold engine, but it doesn't need it now and starts easily without the choke, in fact when you choke it it becomes more difficult to start. In addition, it seems to idle really slow and when you turn the idle screw to speed up the idle it has the opposite effect and the engine starts to slow down even more and starts to die. What gives? | | | | | Joined: Nov 2002 Posts: 2,763 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,763 | Todays fuel will form a sticky residue when the fuel evaporates. This can turn into a glue-like substance if the vehicle is unused for a period of time long enough for the sticky residue to dry.
Sometimes, the addition of fresh fuel will disolve some of the glue-like substance; sometimes not.
First avenue to try is to drain the fuel bowl and attach a fresh fuel supply to the fuel pump. Try starting the vehicle daily to see if the condition gets better. The fuel left in the fuel tank should be drained as well.
A superior approach is to disassemble, clean, and rebuild the carburetor (if the B is rebuildable).
Be aware that with the Rochester B, other issues are not only possible, but probable.
Jon.
Good carburetion is fuelish hot airThe most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes!The Carburetor Shop | | | 
#2807 09/20/2004 11:35 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Does the carb leak? My B tends to develop a sticky float if it sits for too long. It sounds like your float bowl is flooding out.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | | | | Joined: Apr 2002 Posts: 17 Junior Member | | Junior Member Joined: Apr 2002 Posts: 17 | I have had problems with my Rodchester floats sticking in the past and was thinking about changing to a different carb. Any opinions? | | |
#2809 09/23/2004 10:14 PM | Joined: Jun 2004 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2004 Posts: 103 | Hi - Tried to send a personal message. Got an error for your email: [email protected]Is your mailbox full? Wrong address? BW | | |
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