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Old 06-24-2007, 01:04   #1 (permalink)
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Join Date: May 2003
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Question XH Timing?

I've never really Played around with the timing on my ute or any car for that matter but today i checked my timing on my XH 4.0L ute and im not sure if its right...

When i have the light flashing on the pully and mark on the block they do not lign up at all im assuming the timing is out but i just wanna be sure i got the right reference points.

The mark on the block (looking down at it from the front of the car) is slightly right of the pulley and not in the top centre? is this correct?

Ok if it is, the mark on the pulley is about 25mm left of this point... i assume that it should lign up with the mark on the block... Does this mean the timing is retarded? and if so its as simple as advancing the dizzy till they ligh up?

And i know that advancing the timing i can get better power if i run a higher octane fuel, How much can i advance it without doing damage and can i do this with a standard timing light or do i need one that specifically does this???

Cheers to anyone who may be able to help...
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Old 06-25-2007, 02:01   #2 (permalink)
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Re: XH Timing?

by the sounds of what you just said it sounds like your engine is timed pretty close to spot on mate if you move the dizzy and make the marks line up your engine will make a horrible pinging noise and thats really bad means your close to burning a hole in the piston!

cheers
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Old 07-06-2007, 05:34   #3 (permalink)
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Re: XH Timing?

Quote:
Originally Posted by UtE_BoY
I've never really Played around with the timing on my ute or any car for that matter but today i checked my timing on my XH 4.0L ute and im not sure if its right...

When i have the light flashing on the pully and mark on the block they do not lign up at all im assuming the timing is out but i just wanna be sure i got the right reference points.

The mark on the block (looking down at it from the front of the car) is slightly right of the pulley and not in the top centre? is this correct?

Ok if it is, the mark on the pulley is about 25mm left of this point... i assume that it should lign up with the mark on the block... Does this mean the timing is retarded? and if so its as simple as advancing the dizzy till they ligh up?

And i know that advancing the timing i can get better power if i run a higher octane fuel, How much can i advance it without doing damage and can i do this with a standard timing light or do i need one that specifically does this???

Cheers to anyone who may be able to help...
Hi mate
This is perfectly normal. The only way those marks will line up is if you adjust your timming using NGS or WDS. Your engine does not run on Base timing at idle, and your timing is controlled by the PCM, so the marks won't line up unless NGS or WDS tell the PCM to bring the timing back to base.
marc
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