Question about 1996 Jeep Grand Cherokee
It like it not getting gas I change the fule pump I change the spark plug spark plug wires cap
If its not getting gas...the evidence should be present on the old plugs.
if they were lean, run fuel pressure and volume measurements. in the event you still have the filter you were using before the pump work, change it. test according to the TSB that pertains to your model.
verify your build date and vin # before applying the info to this vehicle.
look at test step NS-1(mitchell manual,public library) and run those tests till you have a running ,driving jeep before condemming anything else. if you dont know what any of this means, tow it to jeep
Posted on Mar 29, 2014
96 ZJ. (no engine option stated, so generic answers)
post symptoms..... ???
ok, i see some.....
no engine power.!
questions, no power hot engine, cold engine or both?
question 2, is the bogging, all the time. ? or intermittent or?
OK, Engine 101 .
there are 3 causes (basics) to make and engine bog.
bad engine (compression tests)
bad spark (spark tests)_
bad fueling. just 3. but finding it takes simple test. guessing is very expensive....
if engine compression is good, and you have near 10inches of vacuum, cranking (if not the CAT can be melted)
next is bad SPARK
is spark good (this is a test) to all cylinders, not just 1. ?
use a spare new test spark plug to test spark for best results.
spark good. that means (if you get this far) its bad fueling
Is it flooding or dry ?
the tips of the spark plugs , must not be all of them wet with fuel
soaking (its it will with bad spark but is not here) if its flooding
then crank engine over at wide open throttle and it will start.
WOT cranking clears flooding on all engines. (cuts fueling)
if dry, then try test fuel.
if test fuel fails, you skipped a test above or the order skipped.
see scotty do his magic.
I always check fuel rail pressure first. before attacking my fueling issues. that is because the ECU cant correct for gross low pressure.
28psi is min. (generic, inj. spec. not Jeep)
the gauge to do that is $20
in fact the 3 guages, needed are $20 each.
fuel, spark , compression.
the tools are about 1hr. shop labor ,cost.
Posted on Mar 28, 2014
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Posted on Jan 02, 2017
Clogged Catalytic Converter. What happens is as you push down harder on the accelerator you force more gas into the system causing a slightly richer mixture and more exhaust flow is neccessary. The easiest way to look for a clogged cat is when it's dark out take it for a ride causing it perform it's problem look under the vehicle if the cat is literally glowing red hot you either have a clogged cat or an extremely rich fuel mixture.
Posted on Nov 20, 2008
Do this, take the top off the carb, being careful not to damage the gasket. Then take some carb cleaner and clean out the bowl and floats. Remove the needle valve and clean it out. Put it all back together and filling the bowl with carb cleaner. Start it with the starting fluid. Once you run the carb cleaner through it, it should start to run on it's own. Whatever you do don't shut it off for about 20-30 min unless you have to.
Posted on Apr 27, 2009
Review the Jeep ZJ Repair Manual in the Firing Order (page 10 and 11) for 4.0L 6-cyl and 5.2L 8-cyl.
I really hope hepled with this (remember rated this help) Good luck.
Posted on Nov 18, 2009
i have a 1974 CJ5 with a 258 I have replaced the carb,pump,plugs,wires,cap,button,coil filter and the jeep will idle fine but when you try to drive it or give it alot of fuel the jeep back fires and its like someone turned the fuel off. what could the problem be.
Posted on Apr 24, 2010
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