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Old May 1st, 2018, 12:34
lazyxj's Avatar
lazyxj lazyxj is offline
NAXJA Member #1310
 
Join Date: Mar 2004
Location: Los Angeles
Posts: 2,387
Re: Problems after 12 hole injection upgrade

Your scanner shows the evaporative system and O2 heater tests have not passed.
Neither is dependent on the injectors.

I have tried different injectors in several stock XJs.
IMO, most of the improvement people feel is the result of clean injectors, with a good spray pattern, compared to the old, dirty injectors they replace.
The factory supplied injectors are the right size for a stock engine.

It would be interesting to do side by side dyno comparisons between new, stock injectors and the newer injectors, with more holes.

Larry
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Both XJs are still Real XJs http://www.naxja.org/forum/showthrea...hlight=real+XJ
01 Sport, 4.6L Russ Pottenger 4.6, AW4, 4" lift, 33 X 10.50 KM2, 4.56-8.25 TruTrac, D-30-E-Locker with alloy shafts, Hidden M8000 winch, Vanco front and ZJ rear disc brakes, Frame stiffeners, Lots of armor, Towing baseplate. http://www.flickr.com/photos/lwade/c...7603770130683/
1997 Country, Mostly stock, 2" lift, Engine mods, NP242, Towing baseplate
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