timing

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Jul 30, 2010 | 10:56 PM

rickybarth

Thread Starter

Seasoned Member

Joined: Oct 2009

Posts: 489

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From: long island

Year: 1997

Model: Grand Cherokee

Engine: 4.0

timing

hi i dont know if you can but can i adjust the timing on a 97zj 4.0 i changed the plugs wires cap and rotor and my mechanoc friend said it sounded and felt like t was off when he felt it sort of vibrated at a stop light

Jul 31, 2010 | 07:55 AM

trucker

Member

Joined: Mar 2010

Posts: 219

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Model: Cherokee

I would check the firing order first.

Aug 3, 2010 | 06:10 PM

KennzX

Newbie

Joined: Aug 2010

Posts: 24

Likes: 0

Year: 1998

Model: Grand Cherokee

Engine: 4.0

check the gap on the plugs
do believe its .035

Aug 3, 2010 | 07:36 PM

tiwvr1

CF Veteran

Joined: Mar 2010

Posts: 1,030

Likes: 2

From: Elizabethtown, pa

Year: 1994

Model: Cherokee

Engine: 5.2

did it do it b4 and after tune up, or just after?

Aug 4, 2010 | 08:51 AM

rickybarth

Thread Starter

Seasoned Member

Joined: Oct 2009

Posts: 489

Likes: 0

From: long island

Year: 1997

Model: Grand Cherokee

Engine: 4.0

i did it before the tune up and i did the tune up to try and solve the problem and i gaped the plugs to .035...can the timing be off a little

Aug 5, 2010 | 02:26 AM

KennzX

Newbie

Joined: Aug 2010

Posts: 24

Likes: 0

Year: 1998

Model: Grand Cherokee

Engine: 4.0

I would check the timing chain last resort, first try cleaning your IAC, that should fix your rough idle, it is easier to take off your TB while off clean underneath the butterfly valve also.
Heres a link for you.
http://www.jeepforum.com/forum/f13/h...-valve-756934/ Good Luck