Db2 advance/retard
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New User
Joined: Nov 2015
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From: nw oregon
Db2 advance/retard
2 questions
1. Which direction is advance on injection pump?
2. I loosened the pump but it turns maybe a 1/16" each direction. How do you advance it more? My guess is I'm needing to advance at least 8 degrees. Thanks
1. Which direction is advance on injection pump?
2. I loosened the pump but it turns maybe a 1/16" each direction. How do you advance it more? My guess is I'm needing to advance at least 8 degrees. Thanks
Laughing Gas
Joined: Dec 2013
Posts: 884
Likes: 7
Passenger side is advanced, drivers is retard. Loosen as many injector lines you can get to then rotate it. You shouldn't make adjustments greater than a dime's width at a time. Even jiggling the pump can cause 2-3 degrees of timing change.
Posting Guru
Joined: Feb 2013
Posts: 1,203
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It's best to have a meter when playing with the pump, if you don't have one loosen the nuts just enough to turn the pump, hold the throttle to about 2000 rpm, rotate the pump until you get just a touch of diesel knock and set it there.
Senior User
Joined: Aug 2014
Posts: 188
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just checking
Am I picking this up correctly and you are suggesting altering I/P timing with the engine running? I don't think that is a good idea, could seriously damage components like that.
Posting Guru
Joined: Feb 2013
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I have done it many times.
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