Jeep Wrangler TJ has to turn over for a while before starting

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bully8883

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Joined
Jan 11, 2019
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29
Location
Union City, TN
1998 jeep wrangler tj with 4.0. Engine turns over well but is hard to start. Replaced fuel pump, plugs,wires, rotor and dist. caps and coil. Runs good when it starts but has to turn over a while before it starts.
 
What brand of fuel pump did you install?

Try this:
  • Get in the car and turn the ignition on (but don't turn the car over).
  • Let the fuel pump prime, which usually takes about 5 seconds (if it's quiet, you should hear it priming)
  • Turn the ignition off
  • Repeat this process 3-4 times, each time making sure the fuel pump fully primes
  • Now start the vehicle
Does it start right up? If so, it's your drainback valve which is part of the fuel pump assembly. You'll need to replace the fuel pump to fix this. Bosch (if you can find one) is the best replacement brand, followed by Delphi.

There's a possibility if you installed some low quality local auto part store fuel pump, that your issue is a faulty fuel pump (wouldn't be the first time I've heard of it happening).
 
+1 on timely thread - I've been doing steps 1, 2, and then 5 based on Chris' post (for over a year at least). Don't need steps 3 and 4, but otherwise sounds like the fuel pump issue...

p.s. it's a 2.5 4-cyl, not sure if important or makes a diff
 
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