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How Do you Check if cam and Crank Signals are sync (Read 218 times)

wiggles Freshman Member Offline Posts: 2	How Do you Check if cam and Crank Signals are sync Oct 30^th, 2012 at 11:36am Hi COULD anyone tell me how to check if Cam and Crank signals are synchronised or do you have to work off examples which you captured of known good vehicles
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Mick

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Re: How Do you Check if cam and Crank Signals are sync
Reply #1 - Oct 30^th, 2012 at 12:14pm

wiggles wrote on Oct 30^th, 2012 at 11:36am:

Hi COULD anyone tell me how to check if Cam and Crank signals are synchronised or do you have to work off examples which you captured of known good vehicles Huh

Depends on the vehicle you are working on.

4 cylinder engines can be self descriptive but if you get into twin overhead cam engines that's different.
Then there are V engines that also have single and twin overhead cams wow look out.

Known good saved captures are of course your best choice.

Mick

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Tom Roberts

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Re: How Do you Check if cam and Crank Signals are sync
Reply #2 - Oct 30^th, 2012 at 2:26pm

Good answer from Mick. Mostly you need a known good example. That's why we have a growing library of these. If you have information that will allow you to determine where it should be without an example that is also possible. Here is a thread about Ford EDIS with such information:

http://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1077376754

Tom Roberts
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RtOne

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Re: How Do you Check if cam and Crank Signals are sync
Reply #3 - Oct 30^th, 2012 at 2:31pm

Wiggles, There is an Extensive Library of waveforms here when you join Picogroup, some members pay the subscription for the added iATN Membership, to also have access to the Waveform Library there. No one shop is going to have all makes and models pass through in good working order to get known good captures in a single lifetime, so the memberships pay dividends on the investment, so to speak.

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Dave Hill

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Re: How Do you Check if cam and Crank Signals are sync
Reply #4 - Dec 29^th, 2012 at 1:34pm

Tom Roberts wrote on Oct 30^th, 2012 at 2:26pm:

Mostly you need a known good example.

Hi Tom

Long time no speak.

You mean there is an alternative? Undecided

Unless you can refer to manufacturer information for solid data, surely there is no way to determine a correct alignment, other than a known good example?

Lots of theory maybe, but facts?

Cheers all.

Man who waits for roast duck to fly into open mouth must wait very, very long time.

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Tom Roberts

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Re: How Do you Check if cam and Crank Signals are sync
Reply #5 - Dec 29^th, 2012 at 5:43pm

Dave Hill wrote on Dec 29^th, 2012 at 1:34pm:

Unless you can refer to manufacturer information for solid data, surely there is no way to determine a correct alignment, other than a known good example?

Right.

I used the Ford EDIS as an example of not needing a known good example for every engine as you can simply measure based on the information available for any EDIS engine and determine if it is within acceptable range.

Good to see you here again Dave. We have missed you.

Happy New Year Smiley

Tom Roberts
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