98 CHEROKEE ROUGH RUNNING

98 CHEROKEE ROUGH RUNNING 98 xj, 6 cyl. Runs rough after starting, when engine warm runs smooth. No check engine light. Have done maintenance in following order
  1. Took off fuel rail; full of crap, install fuel rail and do injection flush. Worked great for about 3 weeks symptoms reappear.
  2. Drop fuel tank have steam cleaned, replace intank fuel pump, do a injection flush from fuel forward. Now have about 00 invested in repairs and symptoms are still there.

No check engine light and runs rough, like its missing on some cylinders. From above you would have to rule out fuel, so what would be next?

Matt 0|||||||0 Tact is the ability to describe others as they see themselves

Reply to
jeepr
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Have you done a tune up since all this stuff was cleaned?

Have you cleaned your throttle body?

Reply to
billy ray

1a. New plugs, new wires,new rotor,new cap
Reply to
jeepr

jeepr did pass the time by typing:

TB Idle Air Passage.

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Reply to
DougW

Reply to
L.W.( ßill ) Hughes III

Reply to
philthy

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