Just installed new intake,throttle body spacer, headers, gutted the cat, catback exhaust, ngk spark plugs, thick spark plug wires... it starts for a little bit but if u press the gas or let go of the clutch it dies... when it dies it blows the air back out of the air filter
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Does the engine turn over when you try to start it? Make sure that there is spark by removing a plug then attach the pug to the plug wire and touch it to a good ground. Now turn the engine over and see if you have spark. If you have spark now check to see if there is fuel going into the intake through the throttle body. If no fuel try to pour a little down the throttle body opening and see it it fires. You have a spark or fuel problem for sure. Did you happen to bump the distributor when you were working on it? I hope this helps
Well,first off you need to make sure you are getting spark to the spark plugs first.Get some insulated pliers and pull off a spark plug wire,hold it next to the frame or exhaust and have someone spin the engine over.You should see spark jumping between the plug and the ground.If you do not,then you have an ignition problem.If you can spray fuel in the intake and it wont even try to start,then it sounds like you have an igniton problem.Verify that before going too far with the fuel system.If you have spark,then it may be your ECM could be fried and is not letting the fuel injectors open but it should still try and start if you are spraying fuel directly into the air intake.IF it has spark.
The purpose of the EGR is to add a little inert waste exhaust gas back into the intake fuel/air intake charge to cool the combustion. High combustion temperatures cause environmentally challenging oxides of nitrogen to form plus they can burn out the exhaust valves and seats. One way to stop off the EGR is simply to put a metal blanking plate across the ports on the underside of the EGR valve. You can use the gasket as a template to trace the shape. Without EGR you may want to look at running a slightly richer (8 to 10%) mix to keep things running a bit cooler.
To do a "Tune-up" you will need 6 spark plugs, a throttle body gasket, an air filter, an air compressor, a blow gun, a magnetic pick-up tool and a socket set with ratchet and extensions.
You must remove the intake air resonator, the #3 timing belt cover, the accelerator cable, the throttle control motor connector, the throttle position sensor connector, the accelerator pedal position sensor connector, the throttle body bracket and the throttle body. Then remove the spark plug cables and the ignition coils. You will then crack the spark plugs loose 1/4 turn and use the air compressor and blow gun to blow the debris out of the spark plug tubes so it does not enter the combustion chamber when the spark plugs are removed. Then remove the spark plugs. You will need the magnetic pick-up tool to fish the plugs out of the tubes once they are completely unscrewed.
Install new spark plugs and torque them to 13 ft.lbs (18 Nm)
Install throttle body with nw gasket. Install all other parts removed and connect all connectors.
Install intake resonator and new air filter.
Cat back are nice and they all do the same thing, and that make noise. Start with the Cat back exhaust system of your choice, but to get the full potential of your intake and exhaust system. Your going to have to get your Wrangler's ECM tuned for intake and exhaust system. Your engine will only do so much within the parameter of the ECM's program, regardless of your intake and exhaust upgrades. Cherry bomb is economical in the price of an exhaust system and will do the same as the bigger boy's without any ECM tuning. http://www.cherrybomb.com/
Good luck and thank you for using Fixya
Just a note, if this is an unaltered system, it should contain a sequential fuel injection system, which does not use a conventional throttle body. It uses a spider system instead, which is much different than the pre 1996 models.
Lots of times the idle air control valve gets stuck on these engines. You can try cleaning it. Remove the air intake hose from the throttle body. Start the engine and spray throttle plate cleaner through the hole in the bottom on the throttle body. This will run the cleaner through the idle air control valve. make sure to keep the RPM's at about 2000 to 2500 throughout this procedure. You may need to install a new idle air control valve if it continues to happen.