Timing, did I get it right?
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Timing, did I get it right?
So today I got to time my new IP to get the truck running( see signature). I used a luminocity meter I borrowed from a friend. Some articles I read said the 7.3's used a meter on the #1 injector line,this diddn't have that. It had the probe for the glow plug hole, and the one that went on the balancer. This is correct to time my 7.3 right? Assuming so, I set it to 8.5* BTDC @2000rpm, which was really as far as I could get it to go, the pump wouldnt turn any more. I was trying for 9.5-7*. So, did I do it right, and is the truck going to be running close to how it should? It sounds good at idle and RPM, but I haven't driven it yet. Thanks guys
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From: Mi'kma'ki
no you didn't time the engine correctly using the lumy method.
you timed it as if you were using the pulse method.
she won't run right at all.
here ya go,check this out:
https://www.ford-trucks.com/forums/3...mp-timing.html
this covers the lumy method good.
you timed it as if you were using the pulse method.
she won't run right at all.
here ya go,check this out:
https://www.ford-trucks.com/forums/3...mp-timing.html
this covers the lumy method good.
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So looks like I'm aiming for 2* ATDC @13-1400 RPM. I do have one question though for anyone who has used once of these digital meters. On the display, it displays the timing in a + or - number. I assume(dangerous I know) that + is ATDC and - is BTDC. Is that right?
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
strike two.
- is ATDC.
+ is BTDC.
least thats the way my snapon 480 is.
@1400 rpm for the 6.9l
you may likely want to actually use 2000 rpm for the 7.3l based on research.yes even when using the lumosity probe.
my meter isn't working,so i can't try it.since it's your friends meter,you have some "time" to try both rpms first hand.
from what i have gathered 2k rpm for both methods when timing the 7.3l
also,if you have directions-which it doesn't sound like you do,
when you install the crank sensor,do so with a feeler gauge,or just a piece of paper.
the old directions that came with these meters said to push the probe into the harmonic balancer.
well as you could imagine,the mechanics back then,had a high crank sensor failure rate,as this would over "time" (there i go with my lame pun again lol) destroy the end of the crank probe.-unfortunately which has happened to the one i got of ebay recently most likely,by the looks of it.
so do your friend a favor when using his meter.
- is ATDC.
+ is BTDC.
least thats the way my snapon 480 is.
@1400 rpm for the 6.9l
you may likely want to actually use 2000 rpm for the 7.3l based on research.yes even when using the lumosity probe.
my meter isn't working,so i can't try it.since it's your friends meter,you have some "time" to try both rpms first hand.
from what i have gathered 2k rpm for both methods when timing the 7.3l
also,if you have directions-which it doesn't sound like you do,
when you install the crank sensor,do so with a feeler gauge,or just a piece of paper.
the old directions that came with these meters said to push the probe into the harmonic balancer.
well as you could imagine,the mechanics back then,had a high crank sensor failure rate,as this would over "time" (there i go with my lame pun again lol) destroy the end of the crank probe.-unfortunately which has happened to the one i got of ebay recently most likely,by the looks of it.
so do your friend a favor when using his meter.
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Ok, so I got to work on it today and ended up with 2.4* ATDC (assuuming - is ATDC) @2000RPM. Thats as close as I could get to 2* after an hour and a half of working on it. I'm thinking that having a new IP and old injectors is causing me some problems with getting it dead on. Sound like it'll work?
