Question about 1995 Jeep Grand Cherokee
Installed a new magnum v-8 in my 95 JGC and had the same problem. easiest way to time the moter is to hock up a Snap-On or equivalent scanner and time it from the options menu. no timing light needed.
Posted on Apr 30, 2009
Which engine? Just a generic answer is that the damper on the front of the engine may be your problem...Sometimes the outer ring moves on the inner rubber insert. If this happens and you need to establish timing, there still is a way...use a bolt with the exact same thread as your spark plugs have, dress the end so it is rounded on the end.Turn the engine by hand till you can see the piston. Install the bolt into #1 spark plug hole,so it extends into the combustion chamber. Turn the engine by hand till the #1 piston touches it. make a mark on the damper exactly at the "0" mark on the scale.Remove the bolt and turn the engine backwards till the piston is again visible, install bolt again and turn till it touches the bolt again. Make another mark, again at "0".. Remove the bolt. Measure the distance between the two marks you made, divide it exactly in half and this is exact top dead center. Make a mark there and use it to time the engine.
WARNING: Do not turn the engine using the starter, or use any excessive force when turning the engine or you will do damage to either the piston or valves.It is best to install the bolt after you are visually close to top of piston travel (look through plug hole till you see the piston) to avoid valve contact.
You can "save" a pulley with a migrating ring by drilling and tapping
a 1/4" hole 180 degrees apart, through the outer and inner rings
You need to use exactly the same length threaded rod installed into both holes to keep ring from moving again. Use loctite to prevent the rod from working loose.The balancer is balanced...using different length rod will throw off that balance. I cut a scredriver slot into end of rod to aid in installing. Holes must be exactly at 180 to retain balance as well. You may also have the distributor a tooth off, so make sure that's correct as well.
Posted on Apr 21, 2009
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Posted on Jan 02, 2017
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