Difference Between C AND K / FUEL TANK PROBLEMS..Thanks

[1981Cheyenne]

Hello, I was wondering what the difference between the C and K pickups. Also, my 81 Stepside has dual tanks and only one of them is working. I replaced the switch in the cab but still nothing. Any ideas??

Thank You

[Bob B]

Check the fuseblock for a wire that got pulled off. The switch wire is an added option and I knocked mine off on a 77 once.

Bob B

[jveik]

someone usually asks the C/K question at least once every month or two lol...
C is two wheel drive
K is four wheel drive

yes, thats all it means lol

[JaVeRo]

If you can't switch to the auxillary tank then it is most likely the solenoid valve underneath the frame. The right (passenger) tank is the primary tank and the left is the auxillary. Look for fuel lines coming from each tank and they come into a valve that, with no 12v current, allows fuel to flow from the right tank and with current, draws fuel from the left tank.

In a pinch you can swap the lines and make it draw from the left tank with a bad valve or no 12v current going to the valve.

If there are 3 ports, 2 in and 1 out, you are in luck. That is the cheap valve.
I believe the newer ones have 6 ports, 3 for the return lines. I have never changed one of the later ones but have heard they are more expensive.

James

[1981Cheyenne]

Originally Posted by JaVeRo

If you can't switch to the auxillary tank then it is most likely the solenoid valve underneath the frame. The right (passenger) tank is the primary tank and the left is the auxillary. Look for fuel lines coming from each tank and they come into a valve that, with no 12v current, allows fuel to flow from the right tank and with current, draws fuel from the left tank.

In a pinch you can swap the lines and make it draw from the left tank with a bad valve or no 12v current going to the valve.

If there are 3 ports, 2 in and 1 out, you are in luck. That is the cheap valve.
I believe the newer ones have 6 ports, 3 for the return lines. I have never changed one of the later ones but have heard they are more expensive.

James

Thanks

[1981Cheyenne]

Thank You Everybody

[1981Cheyenne]

Originally Posted by jveik

someone usually asks the C/K question at least once every month or two lol...
C is two wheel drive
K is four wheel drive

yes, thats all it means lol

Thats what I thought, I just didnt want to say "is the only difference between them 4 wheel drive?" and be totally and feel like an idiot. haha

[jveik]

ah icic...