Question about 2000 Jeep Grand Cherokee

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Delay in Ignition and High fuel consumption

I am living in Iraq, North and own a Jeep Grand Cherokee Laredo Model 2000, 6 cycle, I am facing delay in ignition, either when the engine is cold or hot, I have changed the fuel pump and the fuel filter and cleaned up the injection parts, but the problem still existing.
My second point is the high fuel consumption, in town the computer reading 27L/100km.
I appreciate your quick feedback.
Yours,
Amanj Kakarash
Civil Engineer

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  • Jeep Master
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Have you checked the fuel pressure regulator (usually found on the front end of the fuel rail.) The pressure should be around 31lbs with the vacuum line on, 41lbs with vacuum line off. An exceptionally high reading may indicate a blocked or pinched return line. Delay in starting may be due to too much fuel going into engine on start up. Any black smoke out back or excessive carbon residue in end of tailpipe? This isn't really a solution but some suggestions on where I'd be looking.
good luck!

Posted on Jan 30, 2009

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Posted on Jan 02, 2017

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