1985 Jeep CJ7 CJ7 cranks but wont start

Tiny
SAND4302
  • MEMBER
  • 1985 JEEP CJ7
  • 4.2L
  • 6 CYL
  • 4WD
  • MANUAL
My old block cracked due to fualty radiator so changed to a rebuilt motor and reinstalled has ford tfi upgrade and nutter bypass realized I hadnt put distributor in at TDC on compression stroke on #1 so went ahead and tryed to start and of course didnt start and big backfire so after that set it correctly! Then I realized I had resistor wire and hot wire to coil backwards hoping I didnt fry something ! So switched to another coil I had for one of my mustangs! Has a weber 32/36 dgev carb it ran with the cracked motor just fine but now just cranks. Tested the coil with key on and positive have approx 5.2 v and negative has 2.3v please help tryed gas in carb and have feul pressure guage inline and have plenty of pressure has new starter, battery, distributor, just replaced icm and still no avail. PLEASE HELP!
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Wednesday, December 16th, 2015 AT 9:43 AM

11 Replies

Tiny
CJ MEDEVAC
  • EXPERT
LET'S LOOK AT MY RESPONSE ON SEP 25 IN THIS LINK

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

LEMME KNOW WHEN YOU KNOW YOU ARE ON TDC

READY TO KEEP ON HELPIN' YOU!

THE MEDIC
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Wednesday, December 16th, 2015 AT 6:11 PM
Tiny
SAND4302
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Ok verified tdc on compression stroke and found that my harmonic balancers tdc mark was wrong guessing that it had spun / rubber ring had given up but marked tdc currently with paint pen till new one shows up ! Reinstalled distrib what next?
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Saturday, December 19th, 2015 AT 8:19 PM
Tiny
CJ MEDEVAC
  • EXPERT
PROBABLY NEED TO WAIT ON IT

PIC BELOW IS HOW TO GET IT OFF

ETA ON BALANCER?

THE MEDIC
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Sunday, December 20th, 2015 AT 8:28 AM
Tiny
SAND4302
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I will pick up the new one today then should have it put on monday! Thanks
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Sunday, December 20th, 2015 AT 2:06 PM
Tiny
CJ MEDEVAC
  • EXPERT
ROGER

I REALLY DO NOT LIKE THIS NEW SITE CHANGE.

MY DOUBLE SPACING IS DISREGARDED, EVERYTHING GETS CRAMMED INTO ONE PARAGRAPH. I DON'T KNOW ABOUT YOU, BUT I GET CONFUSED AND IT'SHARD TO FIND MY PLACE AGAIN, SHOULD I LOOK AWAY FOR A SECOND.

THE MEDIC
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Sunday, December 20th, 2015 AT 3:00 PM
Tiny
SAND4302
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Ok the balancer wont be here for a week ! Really don't intend on driving it until I get new balancer just have to get it moved so it doesn't get towed! I have verified that im getting spark grounded a plug and had wife turn key and sure enough getting good spark, took filter of the weber and verified that im getting fuel when pumping pedal and also get good fuel pressure on inline guage? What next?
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Wednesday, December 23rd, 2015 AT 10:47 AM
Tiny
CJ MEDEVAC
  • EXPERT
YOU SAID YOU WOULD MARK IT WITH A PAINT PEN. TELL ME HOW YOU WILL KNOW WHEN THE PISTON IS EXACTLY OR DARN CLOSE AT THE TOP?

DEPENDING ON YOUR ANSWER, I MAY BE ABLE TO GET YOU SORTA CLOSE, CLOSE ENOUGH TO MAKE IT RUN, BUT NOT CLOSE ENOUGH TO ACCURATELY TIME IT.

WE HAVE ABOUT 3-1/2 HOURS OF ME BEING ONLINE TONIGHT, LET'S SEE IF WE CAN MAKE SOME HEADWAY!

YES I'M ASKING STUPID QUESTIONS, BUT I GOTTA KNOW WHAT ARE TRUE "GIVENS" AND NOT GUESSES OR MISUNDERSTANDINGS.

HERE'S A SURE WAY TO KNOW YOU DID NOT ACCIDENTALLY PASS YOUR SPOT (AND CONTINUED ON TO BE 180 DEGREES WRONG)

HIDE YOUR KEYS/CHOCK YOUR WHEELS/ GO TO NEUTRAL

REMOVE #1 SPARK PLUG

STICK IT BACK IN , MAYBE 2 THREADS (INSTEAD OF YOUR THUMB)

ROTATE THE ENGINE WITH A WRENCH OR RATCHET

CLOCKWISE AS VIEWED FROM THE GRILL

WHEN YOU HEAR THE "HISS" COMING BY #1 PLUG=-=-=STOP! ( A FRIEND MAY BE HELPFUL TO HEAR THIS AT #1 (AS THE OTHER CYLINDERS HISS INTERNALLY (USUALLY FAINTER) WHEN YOU ROTATE THE ENGINE

NOW, WE ARE ON COMPRESSION STROKE (COMING UP)

WE AIN'T UP YET!

WITH A SOCKET OR WRENCH. EVER SO SLOWLY ROTATE THE ENGINE (CW) TILL YOUR TIMING MARK (LINE) LINES UP WITH ZERO!

STOP!!! WE ARE AT "TDC" TOP DEAD CENTER!

I HAVE FOUND THAT USING THE STARTER FOR THE "BUMPAGE" USUALLY RESULTS IN "OVERRUNNING" THE MARKS,

THEN YOU MISTAKENLY ROTATE ON AROUND 180 DEGREES FROM WHERE YOU SHOULD BE (NOT SAYIN' BAD THINGS ABOUT YOUR ABILITIES, BUT IF YOU ARE NEW TO THIS, IT'S AN EZ MISTAKE!) (SO I DON'T RECOMMEND USING THE STARTER.)

OK, BACK TO OUR SLOW-MOTIONAGE!

NOW LOOK AT THE ROTOR BUTTON

IT SHOULD BE FACING THE "MARK" YOU PUT ON THE 'STRIBUTOR (WHERE # 1 WIRE SHOULD BE-OR IS GONNA BE NOW!

IF YOU WANNA CHANGE #1s POSITION, YOU'LL HAVE TO TAKE THE DISTRIBUTOR BACK OUT AND MOVE IT

.......OR WHICH EVER TOWER YOU CHOSE TO BE #1 (TEXTBOOK OR NOT)

THE ENGINE/ CAM/ CRANK DON'T CARE WHICH ONE IT IS!

AS LONG AS YOU WERE AT TDC, YOU PLACED #1 SPARK PLUG WIRE ON "THAT TOWER" (THE ONE THAT ROTOR IS POINTING TO)

AND YOUR 1-5-3-6-2-4 FIRING ORDER STARTS THERE- AND RUNS THE SEQUENCE CLOCKWISE (LOOKING DOWN ON THE 'STRIBUTOR CAP)

INSTALLING IT "TEXTBOOK" CUTS DOWN ON CONFUSION LATER ON, AS YOU MAY HAVE FORGOTTEN THE "DEAL"- SIMPLY HOOKING IT ALL UP LIKE IT SHOWS IN THE BOOK WILL MAKE IT EZier IN 8 MONTHS! (BUT YOU GOTTA INSTALL IT TEXTBOOK NOW!)

I'M HERE WITH YOU BUDDY!

I'M NOT GONNA ABANDON YOU, I ALWAYS TRY TO 'SPLAIN THINGS REAL SIMPLE, NOT JUST GIVE YOU A TASK AND LEAVE YOU TO FIGGER OUT HOW???

LEMME KNOW IF YOU ARE DARN SURE AT "TDC" AND THE ROTOR IS POINTING AT #1 WIRE!

CONTINUING TO DIAGNOSE WITHOUT THE VALVE TRAIN BEING IN TIME (MECHANICALLY) IS GONNA HAVE US CHASING OUR TAILS FOREVER-TILL WE COME BACK TO THIS POINT!

THIS IS A QUICKEE REMINDER OF HOW THIS THING WORKS!

http://www.youtube.com/watch?v=_y6PS-2j2Ug&feature=related

IF YOU ARE CONFIDENT IT'S RIGHT

2 TEASPOONS OF GAS DOWN THE CARB, THEN ATTEMPT A START

"EXACTLY" WHAT DOES IT DO OR DON'T DO???

THE MEDIC
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Wednesday, December 23rd, 2015 AT 4:50 PM
Tiny
SAND4302
  • MEMBER
Medic well got lucky I guess parts came in so going to put balancer on and going to go ahead and pull timing cover off to verify that the chain is good since im already going to be close to accessing it besides had ordered a new chain set anyway ! Plus I was looking and found that I have close to 16 of movement/slack in chain have a feeling it would give up soon if I dont change it I will pick up with ur last instruction as soon as I get these changed in a few hours thanks!
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Thursday, December 24th, 2015 AT 4:24 AM
Tiny
CJ MEDEVAC
  • EXPERT
I PUT A CLOYES TRUE ROLLER CHAIN AND GEARS IN MINE THIS TIME.

SOME PICS IN THIS LINK

https://www.2carpros.com/questions/1985-ford-f-150-timing-chain-replacement

IF YOU MEANT 1/16th OF AN INCH, YOUR CHAIN IS FINE.

1st & 2nd PICS BELOW SHOWS MY SLACK AND THE 3rd SHOWS WHERE IT WAS SCUFFING THE INSIDE OF MY TIMING COVER.

PIC 4) IF YOU DECIDE NOT TO REPLACE THE TIMING SET, AT MINIMUM, REPLACE THE CRANKSHAFT SEAL. YOU ARE ALREADY IN THERE!

THE MEDIC
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Thursday, December 24th, 2015 AT 12:44 PM
Tiny
SAND4302
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Meant 16 degrees of rotation of balancer actually just finished and put it all back together reset 1 to tdc and sure enough she fired right up couldnt believe it ! Now im chasing water leaks lol ! Thanks for the help medic I sure do appreciate it ! I guess I was 180 off cuz cant imagine timing chain being why it wouldnt run !
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Thursday, December 24th, 2015 AT 2:33 PM
Tiny
CJ MEDEVAC
  • EXPERT
'BOUT TO SORTA BE ON VACATION FOR A WEEK, I'LL CHECK MY MAIL IF THE EVIL CHILDREN WILL LET ME ON A 'PUTER. I AIN'T SPENT $600 ON A MULTI-PHONE JUST TO WATCH THE EVIL GRAND-YOUNGIN'S DESTROY IT. THE OLE FLIP PHONE STILL WORKS AFTER 7 YEARS. KEEP POSTIN' QUESTIONS ON THIS THREAD, I'LL CATCH UP SOON AS I CAN!

MERRY CHRISTMAS

THE MEDIC
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Friday, December 25th, 2015 AT 5:21 AM

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