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2000 Jeep Wrangler I'm stumped

Tiny
BCALD44
  • MEMBER
  • 2000 JEEP WRANGLER
  • 4 CYL
  • 4WD
  • MANUAL
  • 185,000 MILES
I just rebuilt the engine for my Wrangler. All pistons, rings, lifters, push rods, rockers are new. I didn;t see any problems with the valve train so it was left alone. New gaskets were installed throughout. The problem is its hard to start and when it does start it idles rough, and there is a significant loss of power. Cylinder compression was checked and the number 4 cylinder shows a loss of about 8-10 PSI from the other cylinders (all of which are almost perfect). What could be the problem? Could that minimal compression loss be the culprit?
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Wednesday, August 5th, 2009 AT 11:34 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

thank you for the donation,

That compression variance is well with in the acceptable tolerance, this will not be the problem, check for any vacuum leaks, re check all sensors are connected, run a scan to see if a fault code has been set, check all tune items, look at the basics first before digging deeper, re post after you have looked at these items if you need more assistance.

Mark (mhpautos)
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Wednesday, August 5th, 2009 AT 6:22 PM

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