1995 Jeep YJ cranks but wont start

Tiny
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.
Thursday, November 19th, 2015 AT 12:27 PM

5 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Those symptoms are pointing to bad dist cap, rotor and wires.
Was this
answer
helpful?
Yes
No
Thursday, November 19th, 2015 AT 3:28 PM
Tiny
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
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Thursday, November 19th, 2015 AT 4:41 PM
Tiny
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.
Was this
answer
helpful?
Yes
No
+1
Friday, November 20th, 2015 AT 1:43 AM
Tiny
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
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Friday, November 20th, 2015 AT 3:40 PM
Tiny
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
Was this
answer
helpful?
Yes
No
-2
Friday, November 20th, 2015 AT 3:47 PM

Please login or register to post a reply.

Related Engine Not Running Content

Car Cranking but Not Starting? Try This
VIDEO
Car Cranking but Not Starting? Try This
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE