1. Home
  2. Jeep and Willys (new and old)
  3. Feels like I'm running on 4 instead of 6 cyl.

Feels like I'm running on 4 instead of 6 cyl.

Let me give a quick background on my Jeep. I just installed a new Jasper re manufactured engine in my 1995 JGC. I had some fuel issues and some timing issues but worked all of those out. I replaced the PCM and all is good now except the truck feels like its not as powerful. When going up a hill or something I have to put my foot to the floor and it goes no where. What can I check to see whats going on with this engine?

Reply to
GTI
Loading thread data ...

ENGINE LOSS OF POWER 1 . Incorrect ignition timing . 1 . Refer to Group 8D, Ignition System .

  1. Worn or burned distributor rotor. 2. Install new distributor rotor.

  1. Worn distributor shaft. 3. Remove and repair distributor (refer to Group

8D, Ignition

System).

  1. Dirty r incorrectly gapped spark 4. Clean plugs and set gap (refer to Group 8D, Ignition System).

plugs.

  1. Dirt or water in fuel system . 5. Clean system and replace fuel filter.

  1. Faulty fuel pump. 6. Install new fuel pump.

  2. Incorrect valve timing . 7. Correct valve timing .

  1. Blown cylinder head gasket. 8. Install new cylinder head gasket.

  2. Low compression. 9. Test compression of each cylinder.

10 . Burned, warped or pitted valves . 10 . Install new valves .

11 . Plugged or restricted exhaust 11 . Install new parts, as necessary.

system .

12 . Faulty ignition cables. 12 . Replace any cracked or shorted cables .

13 . Faulty coil . 13 . Test and replace, as necessary (refer to Group 8D, Ignition

14 . Faulty crankshaft or camshaft System).

sensor . 14 . Replace sensor .

Reply to
billy ray

Reply to
L.W.(Bill) Hughes III

Bill,

My Jeep feels like she is running on four cylinders, too. Any ideas?

Earle

Reply to
Earle Horton

Reply to
L.W.(Bill) Hughes III

The only solution is to cut your losses and sell me your Jeep for $50.

Carl

Reply to
Carl

Fuel pressure regulator/vaccuum line to the regulator possibly.

Reply to
Unknown

How many miles since the engine was put in? Depending on the clearances on the rebuild, it will be tight for a while (2000-5000 miles). Do a compression check, and also you may want to check bearing clearances with some plastigage.

Reply to
jeff

It's a Real Jeep - meant to be slow :-)

Dave

Reply to
Dave Milne

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.