How will timing affect running ?
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Posting Guru
Joined: Dec 2008
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From: Maysville, Kentucky
How will timing affect running ?
Hey guys,
Can timing being advanced to far cause a rough idle and a loud knocking.
Just put in new injectors and noticed more of a knocking rather loud at idle.
The idle rpm has also dropped to almost 500pm. IP pump might be getting weak bc of the new injectors?
Also how far in inches roughly shoud it be advanced the one on mine, havent touched it, is about 3/8" past the mark. Seems like alot to me but idk. My experience with timing other things is that a little goes a long way.
Thanks guys.
Can timing being advanced to far cause a rough idle and a loud knocking.
Just put in new injectors and noticed more of a knocking rather loud at idle.
The idle rpm has also dropped to almost 500pm. IP pump might be getting weak bc of the new injectors?
Also how far in inches roughly shoud it be advanced the one on mine, havent touched it, is about 3/8" past the mark. Seems like alot to me but idk. My experience with timing other things is that a little goes a long way.
Thanks guys.
Postmaster
Joined: Dec 2002
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From: Southern Oregon USA
Did you replace them with the Turbo (G code, I believe) injectors?
Jason
Cargo Master
Joined: Mar 2006
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From: Sand GAp, KY
3/8 sounds like alot to me. Thought I read on here that it should be no more than the width of the mark. I maybe wrong but if so one the guys with much more experiance than will be along soon.
Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
G codes have higher pop off pressures and may be taxing the old IP to the max.
First move, set the idle speed back up to 700 - 750 RPM, passenger side of the IP.
The static timing marks will get the engine running.
Dynamic timing gets the timing where it needs to be.
3/8" is a lot though.
The knock could be from the RPM to low, to much timing is more of a rattle like preignition on a gasser.
First move, set the idle speed back up to 700 - 750 RPM, passenger side of the IP.
The static timing marks will get the engine running.
Dynamic timing gets the timing where it needs to be.
3/8" is a lot though.
The knock could be from the RPM to low, to much timing is more of a rattle like preignition on a gasser.
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Posting Guru
Joined: Dec 2008
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From: Maysville, Kentucky
Ok. I'll set up the idle. It does sound like a gasser pre igniting. I just always call it a knock. I'm going to set the timing tommorow. I may just end up buying a new pump. I thought i might have to.
Where did u get urs dave? Is it one from DPS
Where did u get urs dave? Is it one from DPS
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
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Posting Guru
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you got some tricks in that pump lol i have a real good idea on what your taching that thing to lol but i wont say nothin, and mine at the governer will bury mine past 85 and i have same gears as you dave, but i dont no what im taching cause i cant get my damn tach to work
Posting Guru
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trust me daves running way more than 3650 and i bet daves pump is as good if not better than a moose pump, my dads 6.9 will bounch on 3800 all day long with the stock ip not tuched the governer, some have lower rpm settings, my 6.9 sound like its going to suck the hood in and take you with it when i hit the governer( so i think its taching 3800 or more) but you risk blowing your engine if its not in good shape. i have heard people say there feels like it looses power after 3000 rpm, but mine pulls hard all the way till it cuts out.