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1985 Jaguar X-Type Lack of power

Tiny
JMLLOAR
  • MEMBER
  • 1985 JAGUAR X-TYPE
Engine Performance problem
1985 Jaguar X-Type 6 cyl Two Wheel Drive Automatic

Fresh top end rebuild,
New FI harness,
Rechecked timing everything seems good,

Engine seems slugish when reving, and has no power under load.

Inherited this problem from last tech who worked on it.

Plugged cat? Or something else common with these cars? It has Bosch FI.

Also anyone have correct firing order and placement on the cap for wires.
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Thursday, May 6th, 2010 AT 6:49 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.


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Friday, May 7th, 2010 AT 6:37 PM

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