Question about Cars & Trucks
I changed distributor cap and put new muffler and cat
Sounds like you have the wrong firing order for the spark plugs.
The firing order is 1-3-4-2 going clockwise around the cap.
Posted on Nov 02, 2012
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Posted on Jan 02, 2017
Review the Jeep ZJ Repair Manual in the Firing Order (page 10 and 11) for 4.0L 6-cyl and 5.2L 8-cyl.
I really hope hepled with this (remember rated this help) Good luck.
Posted on Nov 18, 2009
buy a couple bottles of gasline antifreeze (it absorbs water). add one bottle to your gas tank now and another bottle next time you fill up. you should notice results almost immediately.
Posted on Nov 23, 2009
Check all of your grounds: There is one in front of the transmission leading from the negative wiring from your battery. Another goes from your battery wiring to the inside of your fender area. 10mm bolt. There is another on your driver's side motor mount to the valve cover. Check all relative fuses too.
Main Relay : Up above your gas pedal. Above your cruise control computer. It will be a gray box or a brown box about 3" square. TO DIAGNOSE: Try to tap it while you try to start it, you might need a helper. If this is it... Don't buy a new one, just pry the cover off of it and look close to find the broken solder connection. Heat the faulty pin until the solder puddles around it and your good to go. It's smaller than a human hair, look close and you'll see the loose connection.
Posted on Dec 29, 2009
Testimonial: "I'm going to check that first thing in the morning.I really do appreciate your help with this the holidays are over.Thank you very much"
Perform a valve clearance inspection and adjust if necessary. Tight or sticking valves will cause a misfire or rough running concern. Note: Perform valve adjustment when the engine is stone cold. 4cyl: INT 0.26mm EXH: 0.30mm (V6 engine are hydraulic and no adjust necessary.) Also check for a sticking or stuck open EGR valve. For diagnostic purposes only: Remove the EGR valve. Place a business card over the EGR passage and bolt the EGR valve back on. This plugs the EGR ports and if the misfire goes away the EGR valve is partially stuck open and is defective.
Check for low fuel pressure. Check for low compression. Check cam timing. Check for a weak ignition coil. Also don't over look the possibility of worn or broken engine mounts which cause excessive engine movement and engine vibration. -hope this helps
Posted on Mar 05, 2010
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I think you need a tune up spark plugs and plug wires
distributor cap and distributor rotor
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