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Old 08-29-2007, 10:31 PM
rocker_topper rocker_topper is offline
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1992 explorer 4.0 OHV Timing

Hi! The timing on my truck recently jumped and i now have to reset it. If anyone could help on a step by step walkthrough on how to do this i would greatly appriciate it. I have the 1992 4.0L OHV motor. Any help would be greatly appriciated!!! thanks guys!
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Old 08-30-2007, 06:54 AM
Potomac30 Potomac30 is offline
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Have you disconnected the battery and changed your plugs and wires recently? If not, that would be a good place to start.

Last edited by Potomac30; 08-30-2007 at 07:03 AM.
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Old 08-30-2007, 10:28 AM
mrshorty mrshorty is offline
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These engines so rarely "jump time" that I feel like I need to ask how you know it has jumped time. If you check the ignition timing on my '92, it looks like it has jumped time because the harmonic balancer/crankshaft pulley has "slipped" on the rubber over the years to where the timing marks are 160* off.

The timing chain will almost always last the life of the engine. If something has gone wrong with the timing chain, I would check the condition of the rest of the engine to make sure the entire engine doesn't need to be rebuilt before doing just the timing chain.

If it has jumped time, I expect any decent repair manual would have a basic rundown on how to replace the timing chain. Check out the procedure in the auto repair guides at autozone.com (engine and engine overhaul section) and see what steps you don't understand.
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Old 08-30-2007, 09:54 PM
Space Truckin' Space Truckin' is offline
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Quote:
Originally Posted by mrshorty
...the harmonic balancer/crankshaft pulley has "slipped" on the rubber over the years to where the timing marks are 160* off.
Then it should be replaced. It is not expensive or difficult. Balance is important to engine longevity.
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Old 08-30-2007, 10:53 PM
rocker_topper rocker_topper is offline
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Thanks for all the input guys!!! Turns out it didnt jump time but instead when i replaced the heads for some odd reason i got two faulty head gaskets in the gasket kit set so its was dumping water into the cylinders and not firing at all causing it to seem like it was out of time. I have the new gaskets at the expensive of Advance Auto Parts and the labor will be done tomorrow by, Yours Truely lol so wish me luck.... Seems relitively simple though. Nothing too hard about it except makeing sure everything is torqued down correctly. If anyone could help me on the torque sequence of this job i would be highly thankful Also there is one other question... The is a shaft that runs above each cylinder head that the lifters are attached too... it has three bolts in them... i was wandering whats the torque specs on these bolts and what is the name of that shaft??? Ive been told it was called something like the intermediate shaft or something... Anyways im not sure so if anyone knows the name of this i was love to know it as well... you know just to learn a little more about my motor.. THANKS!!!
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Old 09-05-2007, 10:21 PM
batman45 batman45 is offline
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hey how did it turn out and did you run rtv selant down the width of the heads, if you still need the torque specs i can find them for you i just need to find my shop manual; and if you dont have an inch pound wrench then and cant find one i never used one and started from the middle and worked out till it had a good feeling to it and to my surprise no leaks
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Old 09-05-2007, 11:15 PM
rocker_topper rocker_topper is offline
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finished product

hi guys... just a little update here on the progress. I got the head job completed the next day and the truck is running stronger than ever... Amazingly it only took me 4 hours total to change both heads. that includes teardown and rebuild... anyways thanks for all the help guys...
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Old 09-05-2007, 11:15 PM
 
 
 
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Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford V6 > 2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6

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1992, 40, belt, chain, change, explorer, explorere, ford, heads, ohv, procedure, reseting, tiiming, timing, v6

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