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Cat c12 fuel system


Cat c12 fuel system

This is my first post, but if this subject has been posted and closed before, then I apologize.

I just purchased a 1992 chevy cat c12, and it has a fuel injection system, with no carbs.

I would like to see what some of the posts are about the fuel system (the ones that were closed) and see if anyone has any info. I'm not to sure about the fuel system. I'm guessing it is stock.

Does it have a pressure regulator?

What is the diameter of the fuel injectors?

Does it have a fuel pump?

Also, I looked online, and found a few of the fuel system parts I don't have. So far, the only thing I have is the throttle body, which is missing some parts. I'm looking to buy a new fuel pump and maybe a fuel filter. Can you direct me to the correct parts?

Ok I forgot to tell you this. For years I worked on cars that were converted to fuel injected. Fuel filters were often an issue, if you were still using the stock carb and had the issue of low or no fuel pressure, then the fuel filter is a great place to start to clear it up. Also, you may have to replace the pressure regulator, as it may have a vacuum break in it that is causing a drop in pressure. In all these cases I have to say that the easiest is to just go with a new unit. In the case of an injector, you should go to the top of the line Chevy distributor and get a fuel injector that is rated for your fuel and carb system. They are easy to replace, and very cheap.

I can't help you with the pressure regulator, as I never messed with the system. I can only help you with the carbs. I think the part you are looking for are the throttle body fuel filters and fuel pressure regulators, I do believe that these parts are part #'s 740-7041 and 740-7042. I believe that these can be found at O'Rielly's.

One thing that I forgot to mention, there are some cases when having a vacuum break in the pressure regulator can cause fuel issues, because the pressure regulator is only designed to operate with pressure coming in from a source that you want to have constant pressure, such as your carb and inlet manifold. There are fuel pressure regulators that are not equipped with this vacuum break and are a direct replacement of the stock pressure regulator, such as a K&,N Pressure Valve. These do not have the pressure break in them and should work perfect as a direct replacement.

Thanks agn for stopping by. I hope this helps and if it doesn't, I'm sure someone here will jump in and point out where it did.

thanks for the reply.

I do think I will do some reading tonight on all this.

Its kinda like me asking someone to do my lawn with my wife's lawn mower when they don't even know what they are doing!

But maybe it will make sense to me later.

Thanks agn.

No you should never use anything less then the highest rated pressure regulator in a fuel system. You are more then likely causing the vacuum break, and there are several solutions to the problem.

Thanks agn for the reply.

I do think I will do some reading tonight on all this.

Its kinda like me asking someone to do my lawn with my wife's lawn mower when they don't even know what they are doing!

But maybe it will make sense to me later.

Thanks agn.

There is no doubt that a lower PSI is fine with a properly built system that can handle the pressure. What is not ok, is letting it run too low.

That being sd, we don't have that information here at AutoAnything. You are in luck, because that's why we are here! And, with all the help you can get from the staff here, we will be able to help you build the ultimate build.

Thanks agn for the reply.

I do think I will do some reading tonight on all this.

Its kinda like me asking someone to do my lawn with my wife's lawn mower when they don't even know what they are doing!

But maybe it will make sense to me later.

Thanks agn.

No you should never use anything less then the highest rated pressure regulator in a fuel system. You're just asking for trouble and no amount of knowledge will fix a problem caused by using too small a pressure regulator.

There is no doubt that a lower PSI is fine with a properly built system that can handle the pressure. What is not ok, is letting it run too low.

That being sd, we don't have that information here at AutoAnything. You are in luck, because that's why we are here! And, with all the help you can get from the staff here, we will be able to help you build the ultimate build.

Thanks agn for the reply.

I do think I will do some reading tonight on all this.

Its kinda like me asking someone to do my lawn with my wife's lawn mower when they don't even know what they are doing!

But maybe it will make sense to me later.

Thanks agn.

No you should never use anything less then the highest rated pressure regulator in a fuel system. You're just asking for trouble and no amount of knowledge will fix a problem caused by using too small a pressure regulator.

There is no doubt that a lower PSI is fine with a properly built system that can handle the pressure. What is not ok, is letting it run too low.

That being sd, we don't have that information here at AutoAnything. You are in luck, because that's why we are here! And, with all the help you can get from the staff here, we will be able to help you build the ultimate build.

Thanks agn for the reply.

I do think I will do some reading tonight on all this.

Its kinda like me asking someone to do my lawn with my wife's lawn mower when they don't even know what they are doing!

But maybe it will make sense to me later.

Thanks agn.

Sorry you didn't like the reply. I appreciate the information being there for


Watch the video: Cat Fuel Transfer Pump Remove And Install. C15, 3406E, C12, and C13. (January 2022).

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