backfire thru the intake
#1
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Year: 93
Model: Cherokee
Engine: 4.0
backfire thru the intake
just like the title says, any idea what it could be or what it usually is when it does this
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Year: 1998
Model: Cherokee
Engine: 4.0
Ign timing for the 4.0 is none adjustable.....
Here is what i normally do for a condition like yours
1. check plugs/wires/cap/rotor.
2.Check fuel pressure.
3.for removal of the Dist(if you decide to pull it) you need to mark the base of dist and the block so it goes in exactly like it came out...then next mark the rotor point to the side of the dist. to insure it is pointing in the right spot. remove dist hold down/wires then pull it out....
Here is what i normally do for a condition like yours
1. check plugs/wires/cap/rotor.
2.Check fuel pressure.
3.for removal of the Dist(if you decide to pull it) you need to mark the base of dist and the block so it goes in exactly like it came out...then next mark the rotor point to the side of the dist. to insure it is pointing in the right spot. remove dist hold down/wires then pull it out....
#7
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Year: 93
Model: Cherokee
Engine: 4.0
that sounds easy enough and i got a buddy that went to UTI so i think if i eff it up he could fix it. distributers are cheap enough i might just go ahead and do that, what should my fuel psi be at? what do i need to check that?
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#8
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Year: 1998
Model: Cherokee
Engine: 4.0
Being that you have a 95 and earlier you should have a schrader valve on your fuel rail....kinda looks like a big valve stem....should have a cap on it. that is where your gonna hook up a fuel pressure guage(0-60psi). and since you have a vacuum asst regulator you should see 31 with line on and 39psi with it off.
#9
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Year: 93
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dude are you a mechanic? or just know that much about jeeps lol
would this work?
http://www.sears.com/shc/s/p_10153_1...0070921x00003a
would this work?
http://www.sears.com/shc/s/p_10153_1...0070921x00003a
Last edited by claygrassmann; 06-24-2009 at 07:41 PM.
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Year: 1987
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Year: 1989
Model: Cherokee
Engine: 4.0 I6
I am having the same issue as this. What ended up being the resolve to your issue?
I have new plugs, wires, dist cap, rotor.... Missing/Backfiring under heavy accel and around 1800 rpm.
I have new plugs, wires, dist cap, rotor.... Missing/Backfiring under heavy accel and around 1800 rpm.
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