Question about 1990 Jeep Wrangler

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1990 jeep wrangler motor has no compression

I totally rebuilt my 1990 yj 6 cyl jeep wrangler all the machine work was done professionally but once all in it wouldnt start i did a compression test and its shows zero in all the cylinders have tried many things for problem solving but am now stuck?????

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  • mariah cartwright May 02, 2012

    the motor wont even start

  • Quarter Mile
    Quarter Mile May 02, 2012

    Does it turn over?  Is there spark? Are the plugs the correct ones? Does it get fuel?

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  • Jeep Master
  • 5,525 Answers

Take it back to the shop that did the engine overhaul. No compression at all? They did something very wrong. Does the distributor shaft and rotor turn when cranking the engine? Are you sure your compression tester is working and hasn't failed? Is it possible they got the timing for the crank and camshaft all wrong? Take it back to them and demand they fix it, if it truly has no compression. It will never start without compression.

Posted on May 02, 2012

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6ya6ya
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Posted on Jan 02, 2017

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  • 6982 Answers

SOURCE: 97 Jeep grand cherokee 6 cyl. idles down to 0 and dies.

any leaks in intake or exhaust upstream of the sensors, sparkplug condition and engine controls/sensors for out of range operation (including fuel pressure and condition of regulator)
IAC should be cleaned and checked as this can cause poor idle and shut down. I'm not saying not to change O2 sensors, but unless everything else if OK, it probably won't help.

Posted on May 29, 2009

  • 1 Answer

SOURCE: Looking for Service Repair Manual Jeep Wrangler YJ

i have a 1988 jeep wrangler 6cyl with 5 speed transmission. I was shifting the jeep and it got stuck in third gear. We opened it up and saw that the linkage is aligned and everything is in place. I dont know what is wrong and what to do next. please help ....

Posted on Sep 08, 2009

  • 6982 Answers

SOURCE: caster adjustment for 1990 jeep yj wrangler

caster is adjusted at the rear of the lower control arms. Camber is fixed and cannot be adjusted by normal means (though special off-set ball joints are available to do that) Toe in is adjusted by turning the sleeves in or out on the tie rod ends. None of this should be done at home though crude adjustments can be made in order to get the front end reasonably straight. Adjustments are made on an alignment machine that allows precise adjustments to all you mentioned as well as front/rear tracking.

Posted on Mar 12, 2010

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