Dual fuel tank will not switch over

180

Asked by Jul 15, 2013 at 11:21 PM about the Chevrolet C/K 1500

Question type: Maintenance & Repair

I have an 85 Chevy pickup. It has
350 motor with dual fuel tanks. Both
tanks are full of fuel but when right
tank gets low on fuel & I try to switch
to the left tank which is full, truck
acts like its starving for fuel. Most of
the time I can't even start my truck
on that tank. I've had the truck for a
lil bit over a year & it just started
doing this like 2 wks ago. Please help
me figure out what is wrong with it.
Have a full tank of gas & can't use it!!

9 Answers

19,035

is their duel fuel pumps? one may be failing, two filters?one may be clogged. chevy truck forum will tell, Im not a mechanic of vehicles but take a few wild stabs in the dark. and really hit pay dirt it seems. Oh another thing the diverter valve may not be slamming the slammer causing restriction !

1 out of 1 people think this is helpful.
180

Thank you! I haven't really looked because wasn't sure where to start. At least now I can at least check into all that you described. Again much thanks!

is this a solenoid or manual diverter? if a solenoid would take a look at the fuse...mechanical diverters can be serviced too~

3 out of 3 people think this is helpful.
Best Answer

on cars that I have seen have a handle to flip the connection (pulling gas into the passenger compartment) probably that's why we keep this business out of your footwell these days~

1 out of 1 people think this is helpful.
10

It could be the dash switch, but most likely the switching valve under the truck. If you follow the fuel lines from each tank, the lines join together at a silver valve bolted to the frame. These can be purchased at O'reilly, Pep Boys, etc.

1 out of 1 people think this is helpful.

I have almost the same problem with my 85 truck. I can drive it a couple of days, then the next day it won't start. If I toggle the switch back and for then I can sometimes get it to start.

Don't no

check for a clog in the sending unit in the left tank. even if the right tank is empty, that system is supposed to pull the fuel from the left tank automatically. when I bought my '86 c20 454ci with the dual tanks, the truck's gas gauges didn't work and I didn't know it, but the right tank was empty and the system was pulling from the left tank when the right tank was empty.

10

I'm having same issue. It started with happening with one tank. Then two weeks later the other tank is not getting fuel now. Can't start it at all now.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Fuel delivery 27 answers

    I have a 1990 Chevy 1500 that will not get fuel. I replaced the fuel pump relay as well as the 20 amp in line fuse. I have power clear through to the pump but the pump will not turn on. I checked the ...

    Chevrolet C/K 1500

    -

    Maintenance & Repair

  • our 1990 chev truck 1500, fuel pump not turning on, 3 answers

    our truck was running, turned it off and it wouldn't start again, towed it home and it started once no power. Replaced the 25a fuse under the hood, and the relay switch, also the oil pressure switch ...

    1990 Chevrolet C/K 1500 Standard Cab SB 4WD

    -

    Maintenance & Repair

  • will a bad fuel guage on a 1993 k1500 pickup 5.7 liter cause inability to fill up gas tank 1 answer

    My fuel gauge shows tank is past full even though it is less than 1/2 full, but now is will only take enough gas to fill the intake hose of the tank before it shuts off the pump when trying to fill i...

    1993 Chevrolet C/K 1500 Cheyenne Extended Cab SB 4WD

    -

    Maintenance & Repair

  • Evap Questions 2 answers

    I am getting evap/emissions fault codes...I plan to replace the evap canister and the evap purge solenoid which is located on the side of the throttle body on my vortec 5.7. I am blowing out (light...

    1997 Chevrolet C/K 1500 Cheyenne Standard Cab SB

    -

    Maintenance & Repair

  • fuel problems 5 answers

    Hey am having trouble to start my truck after a replace the fuel pump. The injectors aren't getting no gas. Then I change the fuel filter and the same problem keeps Happening .. I want to k...

    1994 Chevrolet C/K 1500 Cheyenne Standard Cab SB

    -

    General

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 1,071 nationwide C/K 1500 listings starting at $1,250.

ZIP:

Search Chevrolet C/K 1500 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,960
#2 John Saffrahn
John Saffrahn
Reputation 2,390
#3 Rowefast
Rowefast
Reputation 1,390
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,594 Great Deals out of 151,051 listings starting at $1,500
Used GMC Sierra 1500
1,020 Great Deals out of 59,950 listings starting at $1,299
Used Ford F-150
3,039 Great Deals out of 207,184 listings starting at $1,990
Used Chevrolet C/K 2500
262 listings starting at $2,000
Used Dodge Ram 1500
530 Great Deals out of 13,023 listings starting at $1,800
Used Chevrolet Silverado 1500HD
11 Great Deals out of 313 listings starting at $4,988
Used Chevrolet Silverado 2500HD
395 Great Deals out of 27,124 listings starting at $2,998
Used Toyota Tacoma
714 Great Deals out of 31,623 listings starting at $2,750
Used Chevrolet Tahoe
859 Great Deals out of 27,923 listings starting at $1,700
Used Chevrolet C/K 3500
4 Great Deals out of 286 listings starting at $2,995
Used Chevrolet Colorado
312 Great Deals out of 17,661 listings starting at $1,995
Used Chevrolet C10
132 listings
Used Chevrolet S-10
13 Great Deals out of 1,612 listings starting at $1,800
Used Chevrolet Silverado 2500
5 Great Deals out of 281 listings starting at $3,995