Gusseek

Got a 1990 xj that wont start
The fuel pump is going but it won't send any fuel? Just replaced the fuelpump and its the same problem.
Any ideas?

Thanks in advance.

Gusseek

I can add that i have changed sparkplugs and tested with starting fluid and it fires.

Please help me

cruiser54

The hose from the fuel pump to the outlet in the tank compromised?

DFlintstone

My 90's pump came down with a chronic case of preputial neutral when the impeller pin sheared. The motor ran but the impeller sat still.

Btw, how do you know there is no fuel?

Gusseek

i removed the hose from the fuel filter to see if it pumped any fuel.

freegdr

There is gas in tank correct ?

Gusseek

Yes, there is gas in the tank.

freegdr

Pumps only gonna run a few seconds at first to prime wont run constant until its running.

Gusseek

i know but i have bypassed the relay so it gets constant power to it now when i am trying to figure out the problem.

djgrayxj

Note from DJ
How long have you had this Jeep?
Where did you by the replacement pump at?
Which side of the fuel filter did you remove the hose from; pump side I hope.
If we understand you correctly the old pump was running; but not pumping fuel also is that true?

freegdr

Is it running in correct direction could be rotating backwards....

Gusseek

my family has owned it the last 10 years.
The replacement pump i bought at rockauto.com
I removed it on the pump side.
The old pump was running but didnt pump any fuel. I took it out and it was in pretty bad shape so i ordered a new one and hoped it would fix my problem but it didnt..

djgrayxj

Note from DJ
What is the Part No. of Fuel Pump you received?

Gusseek

https://www.rockauto.com/en/moreinfo...179996&jsn=376
Thats the one i ordered.

DFlintstone

Academic now, I meant to attach this lower pic, above.

Btw, on the injector rail there is a little metal screw cap with a Shrader valve under it. Like on a tire. If you depress the little dealie ether while the pump is running or shortly after fuel should spurt out into the rag you are holding there.


Below is the inside of the tank. The black ring you see is the end of the cone that belongs on the end of the fuel return line on the pump assembly. That cone on the metal line holds the bottom of the whole deal in place. That should be fished out, and installed on the metal fuel return line on the assembly. Then you seat the cone into the receptacle in the tank when installing it. The fuel return and pickup are located in a tray inside the tank, so return fuel is available to be picked up at the pump inlet, even when the tank is low or at an angle. This "tray" has a downside now with alcohol in the fuel. Add just a little water, the ethanol separates from the fuel, it's heavier, and will be on the bottom. Without sloshing around, you could be recirculating a mess of alcohol and water. Might run ****ie, might not.