Fuel lines hookup at the fuel pump at the fuel tank diagram needed?

WAYNEREDBULL

MEMBER
1998 GMC S15
2.2L
4 CYL
2WD
MANUAL
50,000 MILES

I replaced the in tank fuel pump and can’t remember which fuel line goes where. It had 3 lines going to it. It has 1bigger line which goes to the bigger outlet port. The other 2 I am not sure of. 1 line comes from the front of the truck and 1 line comes from the fuel vapor recovery. Help please. Thanks

Wednesday, February 15th, 2023 AT 7:41 AM

3 Replies

CARADIODOC

MECHANIC
34,331 POSTS

This is the closest thing I can find to a hose diagram. I included the electrical diagram in the third image so you may be able to determine which solenoid is which by the colors of the wires in their electrical connectors. Both have a pink wire. The second wire for the purge solenoid is dark green / white. The second wire for the vent solenoid is white. Both are shown in the left half of that diagram.

The last two drawings show the valve locations. The last one for the vent valve leaves a lot to be desired, but at least it is not on the engine.

From your description, it appears the hose running to the engine goes on the left port in the first drawing.

Let me know if this is enough to reach a solution.

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Wednesday, February 15th, 2023 AT 3:36 PM

WAYNEREDBULL

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These diagrams are more for electrical and vacuum routing. I am looking for gas line hookups at the 3 ports on top of the fuel pump.

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Thursday, February 16th, 2023 AT 5:53 PM

CARADIODOC

MECHANIC
34,331 POSTS

Sorry about the mix-up. For some reason, hose diagrams are extremely hard to find. I did find these two that are listed for a '98 model. Look at them and see if you can figure out which hose is which. If you still can't, I'll keep searching.

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