Question about Isuzu Trooper

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1995 ISUZU TROOPER, 3.2 LITER,4X4. VEH. SPUTTERS DURING ACCELERATION. TUNE UP DONE 5 MONTHS AGO. HAVE CHANGED ELECT. ASSY. MAP SENSOR, CRANK SENSOR AND IDLE AIR CONTROL VALVE. NO CK ENG. LITE ON. PLEASE ADVICE. THANKS

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Hi,
Thanks for contacting Fixya.com
A standard tuneup does not fix this problem.You need a full tune up, plugs, wires, fuel & air filters, fuel system service, etc.Weak ignition is often the cause of this problem too. Do the standard tune-up if you haven't for a while: plugs, cap, rotor, wires.
Also change the fuel filter. Fuel flow can be checked by disconnecting the return hose (from the fuel pressure regulator to the pipe that goes back to the fuel tank). Loosen the gas cap first so there isn't pressure in the tank. After disconnecting the hose, direct it into a container and turn the key on but don't start the engine. During the priming period you should have a good flow of gas from the return hose.Check the fuel filter, fuel pump and fuel pressure regularator to make sure they are all functioning properly. Also, check the catalytic converter to make sure they are not plugged.
Thank You
If you donot have further queiries please donot forget to accept the solution.

Posted on May 30, 2010

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Posted on Jan 02, 2017

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