timing problem
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Junior User
Joined: Jul 2003
Posts: 72
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From: Lewisville ,Tx
timing problem
Just put in new injectors and a new pump, to get it to sound right i have the pump turned about 1/8 to pass. side and still needs to go further. I did not take the timing gear cover off is it possible for the gear to jump time with the cover on?I am going to have the shop that built the pump check the timing tommorrow before i do anything else.
Symptoms;
loud clatter on cold advance and black smoke
after warm clatter goes away but still a slight amount of smoke
going at highway speed still slight black smoke under light loud
I noticed on the old pump the cog on the back of the pump had been broke loose(seal was broken) so i am wondering if the timing gear had jumped and the pump was adjusted.My question is can i make the same adjustment while the pump is in place.
Thank for the help so far
Symptoms;
loud clatter on cold advance and black smoke
after warm clatter goes away but still a slight amount of smoke
going at highway speed still slight black smoke under light loud
I noticed on the old pump the cog on the back of the pump had been broke loose(seal was broken) so i am wondering if the timing gear had jumped and the pump was adjusted.My question is can i make the same adjustment while the pump is in place.
Thank for the help so far
Posting Guru
Joined: Oct 2005
Posts: 1,030
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From: Powell River B.C.
Are you guys with turbos getting replacement pumps and injectors set up for a 7.3 turbo, ie DB22831-507? and G code injectors. I wonder if they are not just plain pushing too much fuel for a 6.9 or <93.5 7.3 engine??
It sounds to me like your timing is about right, justy too much fuel.
It sounds to me like your timing is about right, justy too much fuel.
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Junior User
Joined: Jul 2003
Posts: 72
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From: Lewisville ,Tx
I plan on having the timing checked first( it,s free) then proceed ,don't want
to void warranty on pump plus if it is over fueling i'll try to get them fix it first. By the way since this is a turbo pump can you adjust the fuel externally?
to void warranty on pump plus if it is over fueling i'll try to get them fix it first. By the way since this is a turbo pump can you adjust the fuel externally?
Posting Guru
Joined: Oct 2005
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From: Powell River B.C.
That external screw on the pump is only a max fuel stop from what I can tell. The actual limiting screw for the piston plungers is the internal screw, not sure though if its not more related to internal pump pressure rather than limiting settings??
Senior User
Joined: Sep 2005
Posts: 306
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new pump take the truck to your shop and have him do the adjustments this way all warranty is good
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Junior User
Joined: Jul 2003
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From: Lewisville ,Tx
well it turned out i had my timing to far retarded by alot, was set 1/8 to passenger side now set 3/16 to driver side to get timing set at 3.5 degrees.
no smoke and seems to run great, will see how it pulls this weekend.
no smoke and seems to run great, will see how it pulls this weekend.
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Posting Guru
Joined: Aug 2006
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From: Kent WA
Originally Posted by trooperkelly
well it turned out i had my timing to far retarded by alot, was set 1/8 to passenger side now set 3/16 to driver side to get timing set at 3.5 degrees.
no smoke and seems to run great, will see how it pulls this weekend.
no smoke and seems to run great, will see how it pulls this weekend.
Lets start by clearing up a couple of terms. Since the mark on the IP gear cover does not move, it is the "static reference point" and when you describe the location of the timing mark most people are referring to the mark on the pump flange - since it is the one that moves.
If you move the mark on the pump flange (by rotating the pump), moving it to the passenger side (rotating the pump counterclockwise) will advance the timing. Moving the mark towards the driver's side (rotating the pump clockwise) will retard the timing.
You said your timing mark was 1/8" towards the passenger side AND that it was too far retarded and that now it is 3/16" to the driver's side and now it is 3.5 degrees advanced. Some part of those two statements are backwards. Either it was too far advanced and you moved it to the driver's side to retard it, or you are referring to the movement of the marks "backwards" of the conventional way that everyone else does.
Just trying to help clear up any confusion and make sure we're all on the same page in terms of how to describe things. Anyway, glad to hear its running well......
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