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Unread 11-03-2011, 11:39 AM   #1
JOKER007
Registered User
1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Weirsdale, Florida
Posts: 4
Hard Cranking

Hi guys new to the site here and want to give all a big thanks for all the info out there. But I have ran across a problem that I need help on.

My problem is my jeep when cranking performs like it is out of time or has a weak starter once started she runs and idels very well no other problems.

Here is what I have done so far:
1988 Wrangler 4.2 Standard
Oil and Filter change
Nutter Bypass ( Ran a seperate Ground )
Team Rush Upgrade
Plugs and wires
MC 2150 carb ( Air Filter )
Fuel Filter
New Battery
New Starter ( Ran a seperate Ground to Starter )
Checked for vac leaks and repaired
Set timing 10 BTDC Tried at 1600 RPM and at 650 (Had Vac line off and plugged while setting) Ended up going 12 BTDC to smooth things out.

Ran Compression Check on cylinders
1-110
2-130
3-115
4-125
5-125
6-135

Help Please

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Unread 11-03-2011, 11:50 AM   #2
pasinbuy
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1994 YJ Wrangler 
 
Join Date: Feb 2007
Location: florida
Posts: 3,839
Not really sure what your problem is. Does she start? Is it just a little loud, normal?

What are the symptoms exactly.
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Unread 11-03-2011, 12:00 PM   #3
JOKER007
Registered User
1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Weirsdale, Florida
Posts: 4
Yes she has never failed to start and runs out real good, it is just when you turn the key the engine turns over as if it is out of time or has a week starter.
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Unread 11-03-2011, 12:08 PM   #4
AmmitOsiris
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1990 YJ Wrangler 
 
Join Date: Apr 2011
Location: Brentwood, California
Posts: 3,293
Same ith mine I m trying figure tthis out I pump the gas because its carb'd I wanna know what the problem is please someone have a diagnosis.
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Unread 11-04-2011, 12:35 PM   #5
JOKER007
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1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Weirsdale, Florida
Posts: 4
Bump
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Unread 11-04-2011, 12:57 PM   #6
dancytron
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1990 YJ Wrangler 
 
Join Date: Jun 2008
Location: st. louis
Posts: 1,249
I didn't see new battery cables on the list.
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Unread 11-04-2011, 01:25 PM   #7
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,812
X2. You need to load test the battery at the parts store and check/clean all the cables from the battery to the chasis, starter, and alternator .
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Unread 11-04-2011, 05:03 PM   #8
JOKER007
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1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Weirsdale, Florida
Posts: 4
Sory I have replaced the cabels, Load tested the new bat held 11 volts under full load even tuck the bat out of the truck to double check, could the distributor be out just enough to make hard cranking but let her run good after started?
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Unread 11-05-2011, 06:00 AM   #9
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,812
11 is low. What is the reading at the battery with the engine running. Sounds like the alternator might not be putting out enough juice.
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Unread 11-05-2011, 07:09 AM   #10
dodger889
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1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
Posts: 4,162
Quote:
Originally Posted by Que89YJ View Post
11 is low. What is the reading at the battery with the engine running. Sounds like the alternator might not be putting out enough juice.
Without the engine running 11 is not low under load test. Now below 9 is low under a full load test. This is how you test a battery.

What is the voltage before and after the load test. Without the engine running.

Sound like your timing is out and if I remember it should be 7* Not 10* at idle.
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A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
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