1995 Jeep YJ cranks but wont start

BENNETTDJ

MEMBER
1995 JEEP WANGLER YJ
4.0L
6 CYL
4WD
AUTOMATIC
157,000 MILES

I switched it off at the store and when I came back out and tried to crank it just spins over with out starting. I have replaced the CPS, distributor, cap, rotor, cam sensor and button. I am getting plenty of fuel and my injectors are pulsing also getting fire from my coil. I'm not getting much of a spark to my spark plugs. I used a spark tester from the coil and it shows a strong spark but when I check it from the spark plug wires it barely has a spark at all. When trying to crank it turns over as normal but it doesn't even try to start.

5 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

Those symptoms are pointing to bad dist cap, rotor and wires.

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Thursday, November 19th, 2015 AT 3:28 PM

CJ MEDEVAC

MECHANIC
11,004 POSTS

POP THE DISTRIBUTOR CAP

RULE 1) SORTA WITHOUT NOT BREAKING NUTHIN'!

SEE OF YOU CAN TURN THE ROTOR BUTTON EITHER DIRECTION (SORTA FORCIBLY, SEE RULE 1) DO NOT USE TOOLS FOR THIS! SEE IF THE WHOLE SHAFT WILL TURN (AND STAYS) IT IS NORMAL TO HAVE SOME CW AND CCW MOVEMENT WINDING UP IN THE SAME STARTING POINT.

THIS "CHECK" IS TO SEE IF THE ROLL PIN IN THE DISTRIBUTOR GEAR HAS SHEARED, THIS WOULD THROW THE TIMING OFF.

SOMETIMES THE GEAR MIGHT "GRAB" IN A DIFFERENT POSITION ON THE SHAFT. THE ROTOR BUTTON WOULD STILL TURN AND IT WOULD STILL FIRE, BUT AT THE WRONG TIMES.

CHECK RESULTS?

THE MEDIC

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Thursday, November 19th, 2015 AT 4:41 PM

BENNETTDJ

MEMBER
2 POSTS

Rotor button will not turn the roll pin is good. Last night I pulled all my plugs one at the time and check to see if they are firing. I am get a good spark now but it still just cranks without starting. I have not check my fuel pressure with a pressure tester yet. I just removed the dust cap from the fuel valve on the fuel rail and pressed the schrader valve and saw fuel coming out but I'm going to check the pressure tonight. I thought I ruled out fuel being the problem by cranking and staying ether down in my throttle body which didn't make it start either? This really has me stumped.

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+1

Friday, November 20th, 2015 AT 1:43 AM

CJ MEDEVAC

MECHANIC
11,004 POSTS

YEP,

IT'S TIME TO RECHECK SOME OF OUR WORK!

HAPPENS TO ALL OF US

SEE MY ANSWERS Sep 25, 2014- Sep 28, 2014 IN THE LINK BELOW - AND BE OPEN MINDED! NUTHIN' WORSE THAN A SICK JEEP!

https://www.2carpros.com/questions/1978-jeep-cj5-engine-wont-start/page/5

KEEP IN MIND, THIS IS A CJ, AS FAR AS "SPECIFIC" STUFF I WAS FEEDING HIM.

RETURN WITH A GRIN!

THE MEDIC

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Friday, November 20th, 2015 AT 3:40 PM

CJ MEDEVAC

MECHANIC
11,004 POSTS

I JUST TRIED THE 1ST LINKS IN THAT OLD POST, THEY WERE LOCKED

THESE MAY FLY WITHOUT THE http crap, IF NOT, COPY AND PASTE 'EM ON NEW TABS

CLASS 1

www. Youtube. Com/watch?V=5a2X9mSSlQY

CLASS 2

www. Youtube. Com/watch?NR=1&v=FHX1yXVyIMg&feature=endscreen

THE MEDIC