87 Cherokee wont start help..

madjeeper · #1 (**permalink**) 07-05-2008, 10:54 PM

i bought a 87 jeep cherokee pioneer and it wont start
i ve tried many many things to fix it nothing has worked

new alternator, starter, battery, bat cables, starter relay, spark plugs, ignition coil, newer fuel pump and fuel filter...

any suggestions?

i think it might be the fuel pump because when i replaced the fuel pump the new one made a humming noise when i turned the key it no longer does
i also know that 1 of my fuel injectors are bad maybe more

mud4feet · #2 (**permalink**) 07-06-2008, 01:58 PM

We could help more with a little more information...............is it getting spark?? Is it getting fuel??? Does it turn over at all??? Details, details, details..............they help alot.

madjeeper · #3 (**permalink**) 07-06-2008, 04:51 PM

i rented a fuel pressure tester and it reads zero fuel pressure
fuel came out of the valve stem looking thing by the fuel injectors
and my fuel pump doesnt hum when i turn the key

not sure about spark, dont know to much about cars
how do i test to see if it is getting spark?

madjeeper · #4 (**permalink**) 07-07-2008, 04:45 AM

i decided to drop the tank and test the fuel pump
when i hooked the pump up to my battery it seemed to work fine.

anyone know which relay is for the fuel pump?